EP1049866B1 - Air filter fitted with a silencer for internal combustion engines - Google Patents
Air filter fitted with a silencer for internal combustion engines Download PDFInfo
- Publication number
- EP1049866B1 EP1049866B1 EP99901801A EP99901801A EP1049866B1 EP 1049866 B1 EP1049866 B1 EP 1049866B1 EP 99901801 A EP99901801 A EP 99901801A EP 99901801 A EP99901801 A EP 99901801A EP 1049866 B1 EP1049866 B1 EP 1049866B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silencer
- housing
- air filter
- mantle
- cylindrical
- 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
- 230000003584 silencer Effects 0.000 title claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- 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
- 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
- F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
- F02M35/0205—Details, e.g. sensors or measuring devices
- F02M35/0207—Details, e.g. sensors or measuring devices on the clean air side
-
- 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
- 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
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
Definitions
- the invention relates to an air filter for internal combustion engines, which air filter from one with one to suck in the atmospheric Air suitable inlet connection and with a for Removal of the cleaned air provided with suitable outlet connections House, as well as a filter insert that can be placed in the house, Furthermore, the inlet nozzle is close to one of the end faces of the house, arranged on the outer side wall of the house, in which between the air filter insert and the outlet nozzle located part of the house with an outlet nozzle damper insert provided towards the diffuser channel is.
- Venturi tubes have been used for a long time used to silence engines and compressors.
- a these solutions are known from DE 16 69 265 U1, where such the formed against the suction opening "tapered tubes" are either directly to the intake openings the engine blocks arranged or in a common manifold are inserted.
- the manifold is with branches to the individual Blocks connected.
- the Venturi tube can also be designed as a tube bundle, the tube bundle either from interlaced, coaxial and in the axial direction conical rings or from side by side Venturi tubes is formed.
- the filter or between the filter and the internal combustion engine is arranged.
- the attenuation before the filter and also according to the filter is the attenuation before the filter and also according to the filter.
- the venturi tube is in a plate filter containing filter housing arranged after the filter.
- the object of the invention is to eliminate the deficiencies mentioned and to find a solution, besides the noise reduction also the important reduction in pressure vibration for the filters enabled, but the space requirement is not expanded, as well as their production and use is economical.
- the basis of the invention is the knowledge that the damping of the Air vibrations caused by the engine with a between Venturi tube inserted into the filter and the motor Arrangement can be carried out most effectively and in the case cylindrical ring-shaped inserts is one possibility such vibration damper in the filter house, inside the To arrange use, which in addition to soundproofing Damping of air vibrations caused by the motor is suitable is.
- the essence of the invention is that the, preferably the full Flow cross section of the house filling damper insert, consisting of several damper insert elements, in the form of inside the cylindrical surface of the filter insert arranged cylindrical Has body and between the damper insert elements in each case an annular gap-shaped opening into a diffuser channel Opening is formed.
- FIG. 1 shows an axial section of a cylindrical air filter provided with the filter insert manufactured according to one embodiment of the invention
- FIG 2 shows an axial section of a cylindrical air filter provided with the filter insert manufactured according to another embodiment of the invention
- in 3 shows an enlarged partial section of the axial section shown in FIG. 2 of the air filter according to the invention you can see.
- Fig.1 shows a cylindrical house (1). Between the house (1) and one over one of those perpendicular to the axis (2) of the house Cross-section with a smaller cross-section, with the house (1) a coaxial damper insert (3) a filter insert (4) is arranged. To introduce the polluted air to be filtered one at an end face (5) of the house (1), through the side wall of the house (1) leading inlet nozzle (6), also for the The filtered clean air is removed from the other face (7) the house (1) from inside the damper insert (3) Executing outlet nozzle (8) arranged.
- the cylindrical outer surface of the damper insert is (3) with several in the direction of the axis (9) of the damper insert (3) shifted annular gap-shaped openings (10).
- the annular gap-shaped opening (10) extends further in the direction of an axis (9) of the damper insert (3), wherein Both edges of the opening (10) are in two trimmed cones continue forming lateral surfaces (11, 12).
- the angle ( ⁇ ) between the lateral surface (11) closer to the inlet connection (6) and the axis (9) is greater than the angle ( ⁇ ) between the to Inlet nozzle (6) removed outer surface (12) and the axis (9).
- the annular gap Openings are concentric, i.e. that through the annular gap Openings (10) separate damper insert elements (3a, 3b, ... ..3n) attached to each other, as well as the width of the annular gap Openings (10) can be set separately.
- the damper insert elements (3a, 3b, ... 3n) can be made hollow so that the axis (9) of the damper insert (3) approach Edges between the two lateral surfaces (11, 12) with cylindrical or conical lateral surfaces (14) are blocked so that the cavities of the damper insert elements (3a, 3b, ... 3n) through the Establishing the ratio between the size of the cordon off Shell surfaces (14) designed opening (s) (15) and the space between the lateral surfaces (11, 12) resonance space (16) be formed.
- the locking bracket are not shown on the pictures, but the damper insert (3) was interpreted in a form where the locking bracket can be used.
- Section of a damper insert element (3a, 3b, .. ..3n) takes a teardrop shape after rounding the annular gap Opening (10).
- the solution is that the damper insert elements (3a, 3b, ... 3n) with a Tool manufactured and with any gap setting can be assembled.
- the top of the "drop" than that Openings of the damper insert elements (3a, 3b, ... 3n) can be open left, or be decided with restricted area (17), the Openings (15) on the locking surface (17) in the on Fig.1 itself related description can be formed can.
- venturi tube-like diffuser openings can be dimensioned arbitrarily and in comparison can the larger cross section of the "pipe" between expanded Borders are changed. You have no further space requirements and can be submitted in the types already used.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Gegenstand der Erfindung ist ein Luftfilter für Brennkraftmaschinen, welches Luftfilter aus einem mit einem zum Einsaugen der atmosphärischen Luft geeigneten Einlaufstutzen und mit einem zur Abfuhr der gereinigten Luft geeigneten Austrittstutzen versehenen Haus, sowie aus einem in das Haus stellbaren Filtereinsatz besteht, ferner ist der Einlaufstutzen nahe der einen der Stirnflächen des Hauses, an der äußeren Seitenwand des Hauses angeordnet, wobei in dem zwischen dem Luftfiltereinsatz und dem Austrittstutzen befindlichen Teil des Hauses mit einem sich zum Austrittstutzen hin verbreitenden Diffusorkanal versehener Dämpfereinsatz angeordnet ist.The invention relates to an air filter for internal combustion engines, which air filter from one with one to suck in the atmospheric Air suitable inlet connection and with a for Removal of the cleaned air provided with suitable outlet connections House, as well as a filter insert that can be placed in the house, Furthermore, the inlet nozzle is close to one of the end faces of the house, arranged on the outer side wall of the house, in which between the air filter insert and the outlet nozzle located part of the house with an outlet nozzle damper insert provided towards the diffuser channel is.
Wie bekannt ist, wurden bereits viele Methode zur Dämpfung des Geräusches der Brennkraftmaschinen, sowie der durch diese eingesaugten Luft verwendet. Zur Minderung der Verunreinigung der eingesaugten Luft, und des infolge dieser entstehenden Verschleißes des Motors - wie allgemein bekannt - werden die Luftfilter angewendet, so wird der Schalldämpfer mit dem Luftfilter über eine Rohrleitung in Reihe geschaltet in den Weg der eingesaugten verschmutzten Luft und der in den Motor gelangenden gereinigten Luft verlegt. Ein Nachteil dieser Lösung ist zunächst der ziemlich große Raumbedarf und die überflüssig große Anzahl der Bestandteile.As is known, many methods for damping the Noise of the internal combustion engines, as well as those sucked in by them Air used. To reduce the contamination of the sucked in Air, and the resulting wear the engine - as is well known - the air filters are applied, so the silencer with the air filter over a Pipeline connected in series in the way of the sucked up dirty Air and the cleaned air entering the engine laid. One disadvantage of this solution is that it is pretty large space requirement and the unnecessarily large number of components.
Seit lange wurden Venturirohre, bzw. Venturirohr-mäßigen Rohre
zur Schalldämpfung von Motoren und Kompressoren verwendet. Eine
dieser Lösungen ist aus DE 16 69 265 U1 bekannt, wo solche die
gegen die Ansaugöffnung "sich düsenartig verjüngende Rohre" ausgebildet
sind, die entweder unmittelbar zu den Ansaugöffnungen
der Motorblocks angeordnet oder in einem gemeinsamen Sammelrohr
eingelegt sind. Der Sammelrohr ist mit Abzweigungen zu den einzelnen
Blocks angeschlossen. Im letzteren Fall kann der Venturirohr
auch als ein Rohrbündel ausgestaltet werden wobei der Rohrbündel
entweder aus ineinander eingelegten, koaxialen und in Achsenrichtung
konischen Ringen oder aus nebeneinander eingelegten
Venturirohren ausgebildet ist.Venturi tubes have been used for a long time
used to silence engines and compressors. A
these solutions are known from
Es wurden ziemlich rasch solche Lösungen entstanden, wo die Luftfilter schon mit den zur Verminderung des durch die eingesaugte Luft verursachten Geräusches dienenden Geräten zusammengebaut wird. Eine derartige Lösung beschreibt die DE 38 42 248 A1, wo ein Venturirohr zur Schalldämpfung verwendet wurde. Der Dämpferglied wurde neben dem Filter angeordnet und mit einem Raum verbindet, wo die Luft sich in 180° verdreht. Nach dem Filter ist noch ein kleinerer Venturirohr vor dem Austrittstutzen verlegt wurde. Durch diese Lösung werden die Geräusche mit den vor und nach der Filter ausgestalteten Dämpferleitungen und -räumen wesentlich vermindert werden, aber der Luftwiderstand und auch der Raumbedarf des Filters dadurch bedeutend erhöht wird.Such solutions were created pretty quickly where the air filter already with those to reduce the sucked in by the Assembled devices causing air noise becomes. Such a solution is described in DE 38 42 248 A1, where a venturi tube was used for sound absorption. The damper was placed next to the filter and connected to a room, where the air turns in 180 °. After the filter is a smaller venturi pipe is installed in front of the outlet nozzle has been. With this solution, the sounds with the front and after the filter designed damper lines and spaces essential be reduced, but the air resistance and also the Space requirement of the filter is significantly increased.
Bei den oben erwähnten Lösungen ist es aus dem Gesichtspunkt der Geräuschdämpfung völlig gleichgültig, daß der Dämpferglied vor der Filter oder zwischen der Filter und der Brennkraftmaschine angeordnet ist. Nach der in der Patentschrift DE 38 42 248 A1 beschriebenen Lösung ist die Dämpfung vor der Filter und auch nach der Filter zu befinden. In einer anderen Lösung, wie z.B. in FR 2.243.342, wird der Venturirohr in einem ein Plattenfilter enthaltenden Filtergehäuse nach dem Filter angeordnet.In the solutions mentioned above, it is from the point of view of Noise attenuation completely indifferent to that of the attenuator the filter or between the filter and the internal combustion engine is arranged. According to the in DE 38 42 248 A1 solution described is the attenuation before the filter and also according to the filter. In another solution, e.g. in FR 2.243.342, the venturi tube is in a plate filter containing filter housing arranged after the filter.
In solchen zylinderförmigen Filtereinsätzen, wo die Richtung der Strömung von der äußeren Mantelfläche der Zylinder sich her nach innen gerichtet ist, kann der Venturirohr in das Innere des Filters angeordnet werden.In such cylindrical filter cartridges, where the direction of the Flow from the outer surface of the cylinder is directed inside the venturi tube Filters are arranged.
Sind auch solche Lösungen, wo selbst die Luftfilter als Dämpferglied verwendet wird und das Mißverhältnis zwischen den verschiedenen Betriebsverfahren, bzw das Geräusch wegen der Mißverhältnisse mit der Einstellung eines vor das Filter gestellten Schmetterlingsschiebers geregelt wird. Eine solche Lösung ist in der DE 38 01 153 A1 zu finden.Are also such solutions where even the air filter as a damper is used and the mismatch between the different Operating procedures, or the noise due to the mismatch with the setting of a butterfly valve in front of the filter is regulated. Such a solution is in the DE 38 01 153 A1 to find.
Das einzige Ziel dieser Lösungen ist die Geräuschdämpfung und die in den verschiedenen Betriebsverfahren auftretenden Druckschwingungen, die die Qualität der Filtration bedeutend beschädigen und die Lebensdauer der Filter vermindern, werden unbeachtet gelassen. Zum Beispiel bei den Auffüllmotoren, wo besonders im Falle einer Teilbelastung und eines Schubbetriebes wesentliche Druckschwingungen zu beobachten sind, wird die je größere Verminderung des Saugwiderstandes als Hauptziel wegen des großen Saugraumstromes betrachtet und dadurch Rohre mit großen Querschnitten verwendet werden.The only goal of these solutions is noise reduction and the pressure vibrations occurring in the various operating processes, which significantly damage the quality of the filtration and The lifespan of the filters is neglected. For example in the case of the refill motors, where especially in the case a partial load and a pushing operation significant pressure vibrations can be observed, the greater the decrease the suction resistance as the main target because of the large suction space flow considered and thus used pipes with large cross sections become.
Die Aufgabe der Erfindung ist die erwähnten Mängel abzuschaffen und eine Lösung zu schöpfen, dadurch außer dem Geräuschverminderung auch die für die Filter wichtige Verminderung der Druckschwingung ermöglicht, aber der Raumaufwand nicht erweitert wird, sowie deren Herstellung und Benutzung wirtschaftlich ist.The object of the invention is to eliminate the deficiencies mentioned and to find a solution, besides the noise reduction also the important reduction in pressure vibration for the filters enabled, but the space requirement is not expanded, as well as their production and use is economical.
Grundlage der Erfindung ist die Erkenntnis, daß die Dämpfung der durch den Motor verursachten Luftschwingungen mit einer zwischen dem Filter und dem Motor eingebrachten Venturirohr-mäßigen Anordnung am wirksamsten durchgeführt werden kann und im Falle zylinderringförmiger Einsätze ist eine Möglichkeit gegeben einen solchen Schwingungsdämpfer im Filterhaus, in der Innere des Einsatzes anzuordnen, der außer der Schalldämpfung auch zur Dämpfung der durch den Motor erregten Luftschwingungen geeignet ist. The basis of the invention is the knowledge that the damping of the Air vibrations caused by the engine with a between Venturi tube inserted into the filter and the motor Arrangement can be carried out most effectively and in the case cylindrical ring-shaped inserts is one possibility such vibration damper in the filter house, inside the To arrange use, which in addition to soundproofing Damping of air vibrations caused by the motor is suitable is.
Das Wesen der Erfindung ist, daß der, vorzugsweise den vollen Strömungsquerschnitt des Hauses ausfüllender Dämpfereinsatz ein, aus mehreren Dämpfereinsatzelementen bestehender, in Form von innerhalb der Zylinderfläche des Filtereinsatzes angeordneter zylindrischer Körper hat und zwischen den Dämpfereinsatzelementen jeweils eine in einen Diffusorkanal mündende ringspaltförmige Öffnung ausgebildet ist.The essence of the invention is that the, preferably the full Flow cross section of the house filling damper insert, consisting of several damper insert elements, in the form of inside the cylindrical surface of the filter insert arranged cylindrical Has body and between the damper insert elements in each case an annular gap-shaped opening into a diffuser channel Opening is formed.
Die Erfindung wird detaillierter mit Hilfe der in den Figuren
dargestellten Ausführungsbeispielen beschrieben, wobei in
Fig.1 ein Achsenschnitt eines mit dem nach einer Ausführungsform
der Erfindung verfertigten Filtereinsatz versehenen zylindrischen
Luftfilters, in
Fig.2 ein Åchsenschnitt eines mit dem nach einer anderen Åusführungsform
der Erfindung verfertigten Filtereinsatz versehenen
zylindrischen Luftfilters, und in
Fig.3 ein vergrößerter Teilschnitt des in Fig.2 gezeigeten
Achsenschnittes des erfindungsmäßigen Luftfilters
zu sehen ist.The invention is described in more detail with the aid of the exemplary embodiments illustrated in the figures, wherein in
1 shows an axial section of a cylindrical air filter provided with the filter insert manufactured according to one embodiment of the invention, in FIG
2 shows an axial section of a cylindrical air filter provided with the filter insert manufactured according to another embodiment of the invention, and in
3 shows an enlarged partial section of the axial section shown in FIG. 2 of the air filter according to the invention
you can see.
Fig.1 zeigt ein zylindrisches Haus (1). Zwischen dem Haus (1) und einem über einen von dem auf die Achse (2) des Hauses senkrechten Querschnitt kleineren Querschnitt verfügenden, mit dem Haus (1) koaxialen Dämpfereinsatz (3) ist ein Filtereinsatz (4) angeordnet. Zur Einführung der zu filtrierenden beschmutzten Luft ist ein bei einer Stirnfläche (5) des Hauses (1), durch die Seitenwand des Hauses (1) führender Einlaufstutzen (6), ferner für die Abfuhr der filtrierten reinen Luft ein bei der anderen Stirnfläche (7) des Hauses (1) aus dem Inneren des Dämpfereinsatzes (3) ausführender Austrittstutzen (8) angeordnet.Fig.1 shows a cylindrical house (1). Between the house (1) and one over one of those perpendicular to the axis (2) of the house Cross-section with a smaller cross-section, with the house (1) a coaxial damper insert (3) a filter insert (4) is arranged. To introduce the polluted air to be filtered one at an end face (5) of the house (1), through the side wall of the house (1) leading inlet nozzle (6), also for the The filtered clean air is removed from the other face (7) the house (1) from inside the damper insert (3) Executing outlet nozzle (8) arranged.
Dem Beispiel gemäß ist die zylindrische Mantelfläche des Dämpfereinsatzes (3) mit mehreren in Richtung der Achse (9) des Dämpfereinsatzes (3) verschobenen ringspaltförmigen Öffnungen (10) versehen. Die ringspaltförmige Öffnung (10) erstreckt sich weiter in Richtung auf eine Achse (9) des Dämpfereinsatzes (3), wobei beiden Ränder der Öffnung (10) sich in zwei abgestutzten Kegel bildenden Mantelflächen (11,12) fortsetzen. Der Winkel (α) zwischen der zum Einlaufstutzen (6) näheren Mantelfläche (11) und der Achse (9) ist größer, als der Winkel (β) zwischen der zum Einlaufstutzen (6) entfernten Mantelfläche (12) und der Achse (9). D.h. die Entfernung wird zwischen den Mantelflächen der beiden abgestutzten Kegel von der ringspaltförmigen öffnung (10) in Richtung auf die Achse des Dämpfereinsatzes (3) sich erstreckt und ein Diffusorkanal gebildet. Die ringspaltförmigen Öffnungen sind rundlaufend, d.h. daß die durch die ringspaltförmigen Öffnungen (10) getrennten Dämpfereinsatzelemente (3a,3b,... ..3n) untereinander befestigt, sowie die Breite der ringspaltförmigen Öffnungen (10) gesondert eingestellt werden kann. Dem Beispiel gemäß wird die Befestigung mit auf die äußeren Mantelflächen des Dämpfereinsatzes (3) in Richtung der Mantellinie aufgebrachten Laschen oder durch in innerhalb des Dämpfereinsatzes (3), an den an den Mantelflächen (11,12), in Richtung der Mantelfläche des Dämpfereinsatzes (3) angeordneten Öffnungen geführte Stöcke (13) erfolgt.According to the example, the cylindrical outer surface of the damper insert is (3) with several in the direction of the axis (9) of the damper insert (3) shifted annular gap-shaped openings (10). The annular gap-shaped opening (10) extends further in the direction of an axis (9) of the damper insert (3), wherein Both edges of the opening (10) are in two trimmed cones continue forming lateral surfaces (11, 12). The angle (α) between the lateral surface (11) closer to the inlet connection (6) and the axis (9) is greater than the angle (β) between the to Inlet nozzle (6) removed outer surface (12) and the axis (9). That the distance is between the outer surfaces of the two trimmed cone from the annular gap-shaped opening (10) towards the axis of the damper insert (3) itself extends and a diffuser channel is formed. The annular gap Openings are concentric, i.e. that through the annular gap Openings (10) separate damper insert elements (3a, 3b, ... ..3n) attached to each other, as well as the width of the annular gap Openings (10) can be set separately. The example according to the attachment to the outer surface the damper insert (3) in the direction of the generatrix Tabs or through in within the damper insert (3), on the on the outer surfaces (11, 12), in the direction of the outer surface the damper insert (3) arranged openings Sticks (13) takes place.
Die Dämpfereinsatzelemente (3a,3b,...3n) können hohl hergestellt werden so, daß die zur Achse (9) des Dämpfereinsatzes (3) näheren Ränder zwischen den beiden Mantelflächen (11,12) mit zylindrischen oder konischen Mantelflächen (14) abgesperrt sind so, daß die Hohlräume der Dämpfereinsatzelemente (3a,3b,...3n) durch die Feststellung des Verhältnisses zwischen der Größe der an den absperrenden Mantelflächen (14) ausgestalteten Öffnung(en) (15) und des Raumes zwischen den Mantelflächen (11,12) Resonanzraum (16) gebildet werden.The damper insert elements (3a, 3b, ... 3n) can be made hollow so that the axis (9) of the damper insert (3) approach Edges between the two lateral surfaces (11, 12) with cylindrical or conical lateral surfaces (14) are blocked so that the cavities of the damper insert elements (3a, 3b, ... 3n) through the Establishing the ratio between the size of the cordon off Shell surfaces (14) designed opening (s) (15) and the space between the lateral surfaces (11, 12) resonance space (16) be formed.
Bei einigen Fällen ist eine mit einem in Richtung des Austrittstutzens (8) ausdehnenden Querschnitt verfügende Feststellkonsole innerhalb des Dämpfereinsatzes (3) angeordnet. In solchen Fällen ist es erforderlich die Länge der Mantelflächen (11,12) veränderbar zu halten. D.h. je näher sind die Mantelflächen (11,12) zum Austrittstutzen (8) desto weniger Raum steht zur Verfügung, in anderen Worten desto kürzer sind die Mantelflächen (11,12). Da sind die Mantelflächen (14) auch konisch, undzwar in Richtung des Austrittstutzens (8) ausdehnend herzustellen. Die Feststellkonsole sind an den Abbildungen nicht dargestellt, aber der Dämpfereinsatz (3) wurde in einer Form interpretiert wo die Feststellkonsole eingesetzt werden kann.In some cases, one is with one toward the outlet port (8) locking bracket with an extensive cross-section arranged within the damper insert (3). In such cases it is necessary to change the length of the lateral surfaces (11, 12) to keep. That the closer the lateral surfaces (11, 12) are to Outlet nozzle (8) the less space is available in in other words, the shorter the lateral surfaces (11, 12). There the lateral surfaces (14) are also conical, namely in the direction of the To produce outlet nozzle (8) to expand. The locking bracket are not shown on the pictures, but the damper insert (3) was interpreted in a form where the locking bracket can be used.
Einer weiteren Ausführung gemäß, die in Fig.2 gezeigt wird, bilden die Mantelflächen (11,12) eine in Richtung des Diffusorkanals sich ausbuchtende Kegelmantelfläche und so ein die Achse (9) enthaltender Schnitt jeweils eines Dämpfereinsatzelementes (3a,3b,.. ..3n) nimmt eine Tropfenform nach Abrundung bei der ringspaltförmigen Öffnung (10) auf. Ein außerordentlich großer Vorteil dieser Lösung ist, daß die Dämpfereinsatzelemente (3a,3b,...3n) mit einem Werkzeug hergestellt und mit einem beliebigen Spalteinstellung montiert werden können. Die Spitze der "Tropfen", als die Öffnungen der Dämpfereinsatzelemente (3a,3b,...3n) können offen gelassen, oder mit Sperrfläche (17) beschlossen werden, wobei die Öffnungen (15) an der Sperrfläche (17) auf in der auf Fig.1 sich beziehenden Beschreibung dargestellter Weise ausgebildet werden können.According to a further embodiment, which is shown in FIG. 2, form the lateral surfaces (11, 12) one in the direction of the diffuser channel conical surface that bulges out and thus contains the axis (9) Section of a damper insert element (3a, 3b, .. ..3n) takes a teardrop shape after rounding the annular gap Opening (10). An extraordinarily great advantage of this The solution is that the damper insert elements (3a, 3b, ... 3n) with a Tool manufactured and with any gap setting can be assembled. The top of the "drop" than that Openings of the damper insert elements (3a, 3b, ... 3n) can be open left, or be decided with restricted area (17), the Openings (15) on the locking surface (17) in the on Fig.1 itself related description can be formed can.
Der Vorteil der Erfindung, daß die Venturirohr-gemäßen Diffusoröffnungen beliebig bemessen werden können und im Vergleich dazu kann der gößeren Querschnitt des "Rohres" zwischen erweiterten Grenzen verändert werden. Sie haben keine weitere Raumbedarf und können in die bereits genutzten Typen eingereicht werden.The advantage of the invention that the venturi tube-like diffuser openings can be dimensioned arbitrarily and in comparison can the larger cross section of the "pipe" between expanded Borders are changed. You have no further space requirements and can be submitted in the types already used.
Claims (4)
- Air filter for internal combustion engines, said air filter comprises a housing (1) with an atmospheric intake pipe (6) and a purified air discharge pipe (8) and a filter cartridge (4) that can be placed into the housing (1), being the intake pipe (6) arranged in the surroundings of one of the front surfaces of the housing (1) on the external side wall of the housing (1) where a silencer (3) preferably filling up the whole flow cross-section of the housing (1) provided with a diffusor opening enlarged toward the discharge pipe (8) is mounted in the part of housing (1) between the filter cartridge (4) and the discharge pipe (8),
characterised in that
the silencer (3) preferably filling up the whole cross-section of the housing (1) consists of a cylindrical body that comprises several silencer inserts (3a, 3b,...3n) arranged inside the cylindrical surface of the filter cartridge (4) where a ring shaped opening (10) ending in a diffusor channel between the silencer inserts (3a, 3b,...3n) each is formed. - Air filter according to claim 1 characterised in that the ring shaped opening (10) is enlarged toward the axis (9) of the filter cartridge (4) where two rims of the opening (10) are continued in two mantle surfaces (11, 12) each forming a truncated cone, so as the mantle surfaces (11, 12) of the individual silencer inserts (3a, 3b,...3n) form a space narrowing toward the direction of the axis (9).
- Air filter according to claim 2 characterised in that the rims of the silencer inserts (3a, 3b,...3n) on the side of the axis (9) of the silencer (3) are closed by cylindrical or conical mantle surfaces (14) in a manner that, by defining the ratio of the size of openings (15) formed on the closing mantle surfaces (14) to the volume of space formed between the mantle surfaces (11, 12), the space between the mantle surfaces (11, 12) forms a resonance space (16).
- Air filter according to claim 2 or claim 3 characterised in that in order to fasten the silencer inserts (3a,3b..3n) to each other as well as to adjust the width of the ring shaped openings, belts fixed in the generatrix direction on the outer cylindrical mantle surface of the silencer (3) or rods (13) within the cylindrical mantle surface of the damping insertion piece (3) led through the bored holes in the truncated cone mantle surfaces (11, 12) of the silencer (3) in the generatrix direction are arranged.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU9800102A HU222975B1 (en) | 1998-01-21 | 1998-01-21 | Air cleaner for internal combustion engines |
| HU9800102 | 1998-01-21 | ||
| PCT/HU1999/000005 WO1999037906A1 (en) | 1998-01-21 | 1999-01-19 | Air filter fitted with a silencer for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1049866A1 EP1049866A1 (en) | 2000-11-08 |
| EP1049866B1 true EP1049866B1 (en) | 2003-04-09 |
Family
ID=89996025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99901801A Expired - Lifetime EP1049866B1 (en) | 1998-01-21 | 1999-01-19 | Air filter fitted with a silencer for internal combustion engines |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1049866B1 (en) |
| AT (1) | ATE237077T1 (en) |
| AU (1) | AU2179899A (en) |
| DE (1) | DE59904946D1 (en) |
| HU (1) | HU222975B1 (en) |
| WO (1) | WO1999037906A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488781A (en) * | 2009-02-23 | 2009-07-22 | 华为技术有限公司 | Loop link detection method in transmission cable and apparatus |
| US10286175B2 (en) | 2013-05-17 | 2019-05-14 | Resmed Paris Sas | Flow diffuser and sound cone |
| CN105443285A (en) * | 2015-12-15 | 2016-03-30 | 恒勃控股股份有限公司 | Air leakage noise muffler for vehicle |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2067160A (en) * | 1935-07-22 | 1937-01-05 | George C Rensink | Air cleaner and silencer |
| DE1669265U (en) * | 1953-09-26 | 1953-12-24 | Maschf Augsburg Nuernberg Ag | INTAKE SILENCER, IN PARTICULAR FOR COMBUSTION MACHINERY, FAN OD. DGL. |
| FR1233817A (en) * | 1958-09-10 | 1960-10-12 | Mann & Hummel Filter | Air filter combined with a suction silencer for internal combustion engines, compressors and other machines drawing air |
| DE7333072U (en) * | 1973-09-12 | 1977-01-20 | Adam Opel Ag, 6090 Ruesselsheim | INTAKE FILTER OR NOISE DAMPERS FOR COMBUSTION MACHINES |
| DE2848186C2 (en) * | 1978-11-07 | 1981-12-03 | Knecht Filterwerke Gmbh, 7000 Stuttgart | Blown plastic filter housing |
| DE3801153A1 (en) | 1987-01-24 | 1988-08-04 | Mann & Hummel Filter | Device for the silencing of intake noises of internal combustion engines |
| US4713097A (en) * | 1987-02-27 | 1987-12-15 | Ford Motor Company | Integrated engine air cleaner and venturi resonator |
| US4790864A (en) | 1987-12-16 | 1988-12-13 | Ford Motor Company | Compact engine air/cleaner with integrated components |
| US5112372A (en) * | 1991-10-22 | 1992-05-12 | Donaldson Company, Inc. | Advanced disposable air cleaner |
| DE4427466C2 (en) * | 1994-08-03 | 1998-04-09 | Kurt Burkhardt | Internal combustion engine |
-
1998
- 1998-01-21 HU HU9800102A patent/HU222975B1/en not_active IP Right Cessation
-
1999
- 1999-01-19 AT AT99901801T patent/ATE237077T1/en not_active IP Right Cessation
- 1999-01-19 DE DE59904946T patent/DE59904946D1/en not_active Expired - Fee Related
- 1999-01-19 EP EP99901801A patent/EP1049866B1/en not_active Expired - Lifetime
- 1999-01-19 WO PCT/HU1999/000005 patent/WO1999037906A1/en active IP Right Grant
- 1999-01-19 AU AU21798/99A patent/AU2179899A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| HU9800102D0 (en) | 1998-03-30 |
| HU222975B1 (en) | 2004-01-28 |
| DE59904946D1 (en) | 2003-05-15 |
| WO1999037906A1 (en) | 1999-07-29 |
| HUP9800102A1 (en) | 1999-09-28 |
| ATE237077T1 (en) | 2003-04-15 |
| AU2179899A (en) | 1999-08-09 |
| EP1049866A1 (en) | 2000-11-08 |
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