JP2007298027A - Filter muffler - Google Patents

Filter muffler Download PDF

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Publication number
JP2007298027A
JP2007298027A JP2007060399A JP2007060399A JP2007298027A JP 2007298027 A JP2007298027 A JP 2007298027A JP 2007060399 A JP2007060399 A JP 2007060399A JP 2007060399 A JP2007060399 A JP 2007060399A JP 2007298027 A JP2007298027 A JP 2007298027A
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Prior art keywords
muffler
filter
soundproof
filter muffler
compressor
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JP2007060399A
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Japanese (ja)
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David Jerabek
ダーフィット・イェラベク
Jiri Klima
ジリ・クリマ
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MAN Energy Solutions SE
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MAN Diesel SE
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/14—Combined air cleaners and silencers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • F02M35/02475—Air cleaners using filters, e.g. moistened characterised by the shape of the filter element
    • F02M35/02483—Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Exhaust Silencers (AREA)
  • Supercharger (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter muffler having a largely reduced number of parts, substantially lowering pressure loss of a compressor intake, having a uniform velocity distribution of intake air in an outlet opening and capable of lowering sound pressure of a compressor to a satisfactory level. <P>SOLUTION: The filter muffler has a cylindrical muffler casing formed of a front wall 1 and a rear wall 2 connectable to a compressor, wherein a cylinder sleeve 4 made of a porous plate and situated outside is closed by these walls and a plurality of ring-shaped sound insulating elements are arranged inside the muffler casing. The ring-shaped sound insulating elements are comprised of at least one outer sound insulating element 5 and at least one inner sound insulating element 6 and are coaxially arranged at intervals from each other, and along with the front wall 1 and the rear wall 2, a flow path 21 is formed to be situated almost between the these sound insulating elements and extend coaxially in a labyrinth manner. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、請求項１のおいてがきに記述された、ターボチャージャのコンプレッサのインテーク側にあるフィルタマフラに関するものである。   The invention relates to a filter muffler on the intake side of a turbocharger compressor as described in the preface of claim 1.

内燃機関、特に大型ディーゼルエンジンで用いられているターボチャージャのスーパーチャージのための主要な構成要素としてコンプレッサが挙げられる。コンプレッサからは、その機能を果たす際にターボチャージャのほとんどの音圧が放出される。そのため、このコンプレッサ・インテークの音圧レベルを有効なフィルタマフラで低下させることが必要となる。   The main component for supercharging turbochargers used in internal combustion engines, particularly large diesel engines, is a compressor. The compressor releases most of the sound pressure of the turbocharger when performing its function. Therefore, it is necessary to lower the sound pressure level of the compressor intake with an effective filter muffler.

このようなフィルタマフラは、たとえば、燃焼空気を圧縮して内燃機関に供給するコンプレッサのインテーク側に設けられる。コンプレッサはターボチャージャの排気タービンにより駆動される。   Such a filter muffler is provided, for example, on the intake side of a compressor that compresses combustion air and supplies it to the internal combustion engine. The compressor is driven by a turbocharger exhaust turbine.

しかしこれとは別に、コンプレッサの最適なパラメータを実現する必要があり、そのためにはコンプレッサ・インテークの圧力低下を最小限に抑え、コンプレッサのステータインレットにおいてインテークエアの速度をできるだけ効率的に配分する必要がある。   Apart from this, however, it is necessary to realize the optimum parameters of the compressor, in order to minimize the pressure drop in the compressor and intake and to distribute the intake air speed as efficiently as possible in the compressor stator inlet. There is.

このような要求は、効率的なマフラを製造する際にも考慮する必要があり、ターボチャージャにおいてはこのようなマフラには通常フィルタ装置が備わっており、インテークエアを清浄化している。   Such a requirement needs to be taken into account when manufacturing an efficient muffler. In a turbocharger, such a muffler is usually provided with a filter device to clean intake air.

たとえば特許文献１には、ケーシングを備えるフィルタマフラが記述されており、このケーシング内には、防音板および吸収エレメントから構成された複数の防音エレメントが配置されており、これら防音エレメントはそれぞれ一つの防音板および一つの吸収エレメントを備えており、これら防音エレメントはケーシング壁の半径方向の溝に配置されており、防音エレメントの防音面はケーシングの中心軸に平行に位置している。   For example, Patent Document 1 describes a filter muffler including a casing, and a plurality of soundproof elements each including a soundproof plate and an absorption element are disposed in the casing, and each of these soundproof elements is one. The soundproofing plate and one absorbing element are provided, and these soundproofing elements are arranged in the radial groove of the casing wall, and the soundproofing surface of the soundproofing element is located parallel to the central axis of the casing.

特許文献２から、複数のリング状の防音エレメントを持つ別なフィルタマフラが知られているが、これらの防音エレメントは互いに一定の間隔を置いて位置しており、円周方向に列状に並んだ複数の防音セグメントで構成されている。ケーシングは、放射状のリブを備える鋳造一体構造として構成されており、これらのリブには溝が形成され、この溝の中に防音セグメントを半径方向に充填し、それによりコンプレッサの軸方向に固定することができる。   From Patent Document 2, another filter muffler having a plurality of ring-shaped soundproof elements is known, but these soundproof elements are located at a certain distance from each other and arranged in a line in the circumferential direction. It consists of multiple soundproof segments. The casing is constructed as a cast monolithic structure with radial ribs, which are formed with grooves, in which the soundproof segments are filled radially and thereby fixed in the axial direction of the compressor. be able to.

しかしこれら既知のフィルタマフラにおいては、部品数が多く、また、コンプレッサ・インテークに望ましくない圧力損失がある。
独国特許発明第１９５１４９９０号明細書 欧州特許第０５７４６０５号明細書 独国特許出願公開第１９８１８８７３号明細書 However, these known filter mufflers have a large number of parts and undesirable pressure losses in the compressor intake.
German Patent Invention No. 19514990 European Patent No. 0574605 German Patent Application Publication No. 19818873

本発明の目的は、これらすべての欠点を解決することである。したがって、本発明の課題は、前述と同様のフィルタマフラを作製することであるが、このフィルタマフラにおいては、従来と比較して部品数が大幅に少なく、コンプレッサ・インテークの圧力損失は大幅に低く抑えられ、フィルタマフラのアウトレット開口部内のインテークエアの速度分布は均一であり、コンプレッサの音圧も満足なレベルまで低下させることができる。   The object of the present invention is to solve all these drawbacks. Therefore, an object of the present invention is to produce a filter muffler similar to that described above, but this filter muffler has a significantly smaller number of parts than the conventional one, and the pressure loss of the compressor / intake is significantly lower. Therefore, the velocity distribution of the intake air in the outlet opening of the filter muffler is uniform, and the sound pressure of the compressor can be lowered to a satisfactory level.

この課題は、本発明により請求項１に記述されたフィルタマフラにより解決できる。   This problem can be solved by the filter muffler described in claim 1 according to the present invention.

フィルタマフラにおいては、リング状の防音エレメントが、少なくとも一つの外側防音エレメントおよび少なくとも一つの内側防音エレメントとで構成されている。これら防音エレメントは同軸で互いに間隔を置いて配置されており、且つ、前壁および後壁とともに、これら防音エレメントの間にほぼ位置し、同軸かつ迷路状に伸びる流路が形成される。この流路はマフラケーシングの軸に垂直にケーシングのシリンダスリーブ内に流入する外気のためのものであり、外気が少なくとも外側防音エレメントの周囲を通過してコンプレッサに導かれるよう、外気をコンプレッサに導く流路の幾何学的形状を決定することができる。この幾何学的形状により圧力損失を非常に低く抑えることができ、また、フィルタマフラのケーシング全体に十分な剛性を与えるために、前壁および後壁、ケーシングの外側の多孔板状のシリンダ壁ならびに外側および内側防音エレメント用の多孔板の材料強度／厚みの選択において、従来と比較して大きな自由度を得ることができる。   In the filter muffler, the ring-shaped soundproof element is composed of at least one outer soundproof element and at least one inner soundproof element. These soundproof elements are coaxially arranged at a distance from each other, and together with the front wall and the rear wall, a flow path extending substantially coaxially and in a labyrinth is formed between the soundproof elements. This flow path is for the outside air flowing into the cylinder sleeve of the casing perpendicular to the axis of the muffler casing and guides the outside air to the compressor so that the outside air passes at least around the outer soundproof element and is led to the compressor. The geometry of the flow path can be determined. This geometry allows the pressure loss to be kept very low, and in order to give the entire filter muffler casing sufficient rigidity, the front and rear walls, the perforated plate-like cylinder wall outside the casing and In selecting the material strength / thickness of the perforated plate for the outer and inner soundproof elements, a greater degree of freedom can be obtained compared to the conventional case.

従属請求項には、本発明の好適な実施形態が記述されている。   The dependent claims describe preferred embodiments of the invention.

以下に、本発明を、図を用いてさらに詳しく説明する。
図１は、略円筒状のフィルタマフラ２０であり、そのケーシングは、一つの前壁１、および本図では図示されていないコンプレッサに接続する一つの後壁２を備えており、この後壁により、外側に配置された、多孔板で作られたシリンダスリーブが閉じられている。 Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 shows a substantially cylindrical filter muffler 20 having a casing having a front wall 1 and a rear wall 2 connected to a compressor not shown in the figure. The cylinder sleeve made of perforated plate, which is arranged on the outside, is closed.

コンプレッサから発生する音圧レベルを減衰させるために、本図の実施例においてはケーシング内に複数のリング状防音エレメント５，６が設けられている。このリング状防音エレメント５，６は、一つの外側防音エレメント５および一つの内側防音エレメント６で構成されている。これら防音エレメント５，６は同軸状に互いに間隔を置いて配置されており、且つ、前壁１および後壁２とともに、これら防音エレメント５，６の間にほぼ位置し、同軸かつ迷路状に伸びる流路２１が形成される。この流路はマフラケーシング２０の軸に対して垂直にケーシングのシリンダスリーブ４内に流入する外気のためのものであり、外気は、少なくとも外側防音エレメント５の周囲を通過してコンプレッサに導かれる。   In order to attenuate the sound pressure level generated from the compressor, a plurality of ring-shaped soundproof elements 5 and 6 are provided in the casing in the embodiment of this figure. The ring-shaped soundproof elements 5 and 6 are composed of one outer soundproof element 5 and one inner soundproof element 6. These soundproof elements 5 and 6 are coaxially spaced apart from each other, and are substantially located between the soundproof elements 5 and 6 together with the front wall 1 and the rear wall 2 and extend coaxially and in a maze shape. A flow path 21 is formed. This flow path is for outside air that flows into the cylinder sleeve 4 of the casing perpendicular to the axis of the muffler casing 20, and the outside air passes through at least the periphery of the outer soundproof element 5 and is guided to the compressor.

そのために内側防音エレメント６は垂直に前壁１に、外側防音エレメントは垂直に後壁２に固定されている。   For this purpose, the inner soundproof element 6 is fixed to the front wall 1 vertically and the outer soundproof element is fixed to the rear wall 2 vertically.

もちろん、外側防音エレメント５を垂直に前壁１に、内側防音エレメント６を垂直に後壁２に固定することも可能である。   Of course, it is also possible to fix the outer soundproof element 5 to the front wall 1 vertically and the inner soundproof element 6 to the rear wall 2 vertically.

本発明フィルタマフラの剛性を高めるためにさらに、前壁１と、隣接する外側防音エレメント５の前面とを、その間に位置する流路２１を跨ぐボルト８またはリブまたは剛性を高めるその他の接続要素により互いに接続する。   In order to increase the rigidity of the filter muffler of the present invention, the front wall 1 and the front surface of the adjacent outer soundproof element 5 are further connected by bolts 8 or ribs straddling the flow path 21 positioned therebetween, or other connection elements that increase rigidity. Connect to each other.

防音エレメント５、６は通常は、多孔板のベース部分および、防音性の材料から作られた防音部品で構成されている。そのために外側防音エレメント５および内側防音エレメント６は、それぞれ多孔板２２，２３のスリーブ部分で構成されており、これら多孔板はそれぞれ一つの円形中空ボディ要素を覆っている。この中空ボディ要素は、防音材２４、２５により充填されている。多孔板２２，２３の孔の面積はそれぞれ、それぞれの多孔板２２，２３の全面積に対する希望の割合で設定することができる。   The soundproof elements 5 and 6 are usually composed of a base portion of a perforated plate and a soundproof component made of a soundproof material. For this purpose, the outer sound-insulating element 5 and the inner sound-insulating element 6 are respectively constituted by sleeve portions of the perforated plates 22 and 23, and each of the perforated plates covers one circular hollow body element. The hollow body element is filled with soundproof materials 24 and 25. The area of the holes of the porous plates 22 and 23 can be set at a desired ratio with respect to the total area of the respective porous plates 22 and 23.

さらに、マフラケーシングのシリンダスリーブ４には、通気性があり交換可能なフィルタパッド３が設けられている。   Further, the cylinder sleeve 4 of the muffler casing is provided with a replaceable filter pad 3 having air permeability.

インテークエアはしたがって、矢印Ｓ（図１参照）に沿って、シリンダスリーブ４の円周上にセットされたフィルタパッド３を通ってフィルタマフラ２０の内部空間に流れ込み、防音エレメント５，６を通過して、フィルタマフラ２０のアウトレット孔１０からコンプレッサに流れ込む。   Therefore, the intake air flows along the arrow S (see FIG. 1) through the filter pad 3 set on the circumference of the cylinder sleeve 4 into the inner space of the filter muffler 20 and passes through the soundproof elements 5 and 6. Then, the air flows into the compressor from the outlet hole 10 of the filter muffler 20.

つまり、インテークエアは、フィルタパッド３を通って半径方向に、およびシリンダスリーブ４の多孔板の外周を通って、前壁１の近傍でＵターンしている流路２１内を流れるが、この流路は同軸で間隔を置いて配置された防音エレメント５，６および、ケーシングの前壁１および後壁２により形成されている。インテークエアはこの流路からアウトレット孔１０に流れるが、このアウトレット孔にはコンプレッサのインテークパイプが連結されている。   That is, the intake air flows through the filter pad 3 in the radial direction and through the outer periphery of the perforated plate of the cylinder sleeve 4 in the flow path 21 that is U-turned in the vicinity of the front wall 1. The path is formed by soundproofing elements 5, 6 that are coaxial and spaced apart, and the front wall 1 and rear wall 2 of the casing. Intake air flows from this flow path to the outlet hole 10, and an intake pipe of a compressor is connected to the outlet hole.

ここで実施例の一つのバリエーションが可能であり、このバリエーションにおいては、インテークエアは軸方向に、多孔板から構成される前壁１に吸引されるか、または、インテークは２つの面、つまり前壁１および外側シリンダ４を介して行われる。   Here, a variant of the embodiment is possible, in which the intake air is sucked axially in the front wall 1 consisting of a perforated plate or the intake has two faces, namely the front Via the wall 1 and the outer cylinder 4.

流路２１が、従来と比較して長く迷路状であるため良好な防音を達成することができるが、これは、既知のように、通過するエアが、発生した音圧の山において防音エレメント５，６の防音材２４，２５内に押し込められ、また、発生した音圧の谷において再び吸い出されるため、このようにして音圧の振幅を大幅に縮小させることができる。流路の配置の際には、流路長Ｌと流路幅ｂとの関係を、防音対象の音圧周波数に応じて調整することに注意が必要である。   Since the flow path 21 has a long labyrinth as compared with the conventional one, it is possible to achieve good soundproofing. As is known, this is because the soundproofing element 5 is formed in a mountain of sound pressure where the passing air is generated. , 6 are pushed into the soundproof materials 24 and 25 and are sucked out again in the generated valley of the sound pressure, so that the amplitude of the sound pressure can be greatly reduced in this way. When arranging the flow paths, care must be taken to adjust the relationship between the flow path length L and the flow path width b according to the sound pressure frequency to be soundproofed.

上述の理由より、孔の面積を、それぞれ、防音エレメント５，６のそれぞれの多孔板２２，２３の全体面積に対して望む割合で設定できるというもう一つの長所がある。このとき、たとえば特許文献３に記述されているように、多孔板２２，２３をヘルムホルツ共鳴器として実施することも可能である。   For the above reasons, there is another advantage that the area of the hole can be set at a desired ratio with respect to the entire area of the perforated plates 22 and 23 of the soundproof elements 5 and 6, respectively. At this time, for example, as described in Patent Document 3, it is also possible to implement the porous plates 22 and 23 as Helmholtz resonators.

防音材２４，２５に用いられている材料は、特許文献１に記述された開放気泡の発泡材、ファイバーマット、またはその他の吸音性材料である。シリンダスリーブ４のフィルタパッド３については、特許文献２に記述されたように、プラスチック、金属織布、フィルタペーパー、またはさまざまな材料で作られたコンポジットフィルタが用いられる。   The material used for the soundproof materials 24 and 25 is an open-cell foamed material, fiber mat, or other sound-absorbing material described in Patent Document 1. For the filter pad 3 of the cylinder sleeve 4, as described in Patent Document 2, plastic, metal woven fabric, filter paper, or a composite filter made of various materials is used.

さらに、フィルタマフラ２０にはその他の付属品を取り付けることもできる。たとえば、前壁１の外側にセンサ９を取り付けるためのロックを設けることや、または、後壁２の外側に洗浄剤供給のためのインレット７を設けることもできる。   Further, other accessories can be attached to the filter muffler 20. For example, a lock for attaching the sensor 9 to the outside of the front wall 1 can be provided, or an inlet 7 for supplying a cleaning agent can be provided on the outside of the rear wall 2.

図２には、本発明のフィルタマフラ２０の実施例を、図１のＳ２−Ｓ２で切断した横断面が示されている。図２とは異なり、マフラは、回転対称形ではなく、たとえば長方形または楕円形も可能である。   FIG. 2 shows a cross section of the filter muffler 20 according to an embodiment of the present invention, cut at S2-S2 in FIG. Unlike FIG. 2, the muffler is not rotationally symmetric, but can be rectangular or elliptical, for example.

図２に図示された、ケーシング内に外側および内側防音エレメントを備える本発明のフィルタマフラの縦断面Ｓ１である。Fig. 3 is a longitudinal section S1 of the filter muffler of the present invention with outer and inner soundproof elements in the casing shown in Fig. 2. 図１に図示された、ケーシング内に外側および内側防音エレメントを備える本発明のフィルタマフラの横断面Ｓ２である。2 is a cross section S2 of the filter muffler of the present invention with outer and inner soundproof elements in the casing illustrated in FIG.

符号の説明Explanation of symbols

１ 前壁
２ 後壁
３ フィルタパッド
４ シリンダスリーブ
５ 外側リング状防音エレメント
６ 内側リング状防音エレメント
７ インレット
８ ボルト
９ センサ
１０ アウトレット孔
２０ フィルタマフラ
２１ 流路
２２ 多孔板
２３ 多孔板
２４ 防音材
２５ 防音材 DESCRIPTION OF SYMBOLS 1 Front wall 2 Rear wall 3 Filter pad 4 Cylinder sleeve 5 Outer ring-shaped soundproof element 6 Inner ring-shaped soundproof element 7 Inlet 8 Bolt 9 Sensor 10 Outlet hole 20 Filter muffler 21 Channel 22 Perforated plate 23 Perforated plate 24 Soundproof material 25 Soundproof Material

Claims (7)

ターボチャージャのコンプレッサのインテーク側にあるフィルタマフラ（２０）であって、望ましくは、前壁（１）および、コンプレッサと接続可能な後壁（２）で構成される円筒形のマフラケーシングを備え、これらの壁により、多孔板で作られた、外側に位置するシリンダスリーブ（４）が閉じられ、さらに、リング状の複数の防音エレメント（５，６）がマフラケーシングの内部に配置されており、
リング状の防音エレメント（５，６）は、少なくとも一つの外側の防音エレメント（５）および少なくとも一つの内側防音エレメント（６）で構成され、同軸で互いに間隔を置いて配置されており、且つ、前壁（１）および後壁（２）とともに、これら防音エレメントのほぼ間に位置して同軸かつ迷路状に走る、マフラケーシングに流れ込む外気のための流路（２１）が形成され、これにより、外気が少なくとも部分的に外側防音エレメント（５）の周囲を通過してコンプレッサに導かれることを特徴とするフィルタマフラ。 A filter muffler (20) on the intake side of the turbocharger compressor, preferably comprising a cylindrical muffler casing comprising a front wall (1) and a rear wall (2) connectable to the compressor; These walls close the outer cylinder sleeve (4) made of a perforated plate, and a plurality of ring-shaped soundproof elements (5, 6) are arranged inside the muffler casing,
The ring-shaped soundproofing elements (5, 6) are composed of at least one outer soundproofing element (5) and at least one inner soundproofing element (6), are coaxially spaced from each other, and Together with the front wall (1) and the rear wall (2), there is formed a flow path (21) for the outside air flowing into the muffler casing, which is located approximately between these soundproof elements and runs coaxially and in a maze shape, A filter muffler, characterized in that outside air passes at least partly around the outer soundproof element (5) and is guided to the compressor. 請求項１に記載のフィルタマフラであって、
内側防音エレメント（６）が垂直に前壁（１）に固定され、外側防音エレメント（５）が垂直に後壁（２）に固定されることを特徴とするフィルタマフラ。 The filter muffler according to claim 1,
A filter muffler characterized in that the inner soundproof element (6) is fixed to the front wall (1) vertically and the outer soundproof element (5) is fixed to the rear wall (2) vertically. 請求項１に記載のフィルタマフラであって、
前壁（１）と、隣接する外側防音エレメント（５）の前面とが、その間に位置する流路（２１）を跨ぐ接続要素（８）により互いに接続されていることを特徴とするフィルタマフラ。 The filter muffler according to claim 1,
A filter muffler characterized in that the front wall (1) and the front surface of an adjacent outer soundproofing element (5) are connected to each other by a connecting element (8) straddling a flow path (21) positioned therebetween. 請求項１に記載のフィルタマフラであって、
外側防音エレメント（５）が垂直に前壁（１）に固定され、内側防音エレメント（６）が垂直に後壁（２）に固定されることを特徴とするフィルタマフラ。 The filter muffler according to claim 1,
The filter muffler characterized in that the outer soundproof element (5) is fixed to the front wall (1) vertically and the inner soundproof element (6) is fixed to the rear wall (2) vertically. 請求項１に記載のフィルタマフラであって、
マフラケーシングのシリンダスリーブ（４）が通気性のある、交換可能なフィルタパッド（３）に覆われていることを特徴とする、フィルタマフラ。 The filter muffler according to claim 1,
Filter muffler, characterized in that the cylinder sleeve (4) of the muffler casing is covered with a breathable, replaceable filter pad (3). 請求項１に記載のフィルタマフラであって、
外側防音エレメント（５）および内側防音エレメント（６）に、それぞれ円形中空ボディ要素を覆う、それぞれ一つの多孔板（２２，２３）のスリーブ部分が備わっており、該中空ボディ要素は防音材（２４，２５）により充填されており、孔の面積は、それぞれの多孔板（２２，２３）の全体面積に対して望む割合で設定できることを特徴とする、フィルタマフラ。 The filter muffler according to claim 1,
The outer sound-insulating element (5) and the inner sound-insulating element (6) are each provided with a sleeve portion of one perforated plate (22, 23), each covering a circular hollow body element. 25), and the area of the pores can be set at a desired ratio with respect to the total area of each porous plate (22, 23). 請求項６に記載のフィルタマフラであって、
多孔板２２および／あるいは多孔板２３がヘルムホルツ共鳴器として構成されていることを特徴とする、フィルタマフラ。 The filter muffler according to claim 6,
A filter muffler characterized in that the porous plate 22 and / or the porous plate 23 are configured as Helmholtz resonators.
JP2007060399A 2006-04-28 2007-03-09 Filter muffler Pending JP2007298027A (en)

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