EP3388678B1 - Silencieux de pulsations pour compresseurs - Google Patents

Silencieux de pulsations pour compresseurs Download PDF

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Publication number
EP3388678B1
EP3388678B1 EP18164781.9A EP18164781A EP3388678B1 EP 3388678 B1 EP3388678 B1 EP 3388678B1 EP 18164781 A EP18164781 A EP 18164781A EP 3388678 B1 EP3388678 B1 EP 3388678B1
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EP
European Patent Office
Prior art keywords
absorber
absorber element
media flow
compressor
housing
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.)
Active
Application number
EP18164781.9A
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German (de)
English (en)
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EP3388678A1 (fr
Inventor
Ulrich Thomes
Marc Schiel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gardner Denver Deutschland GmbH
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Gardner Denver Deutschland GmbH
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Publication of EP3388678A1 publication Critical patent/EP3388678A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/065—Noise dampening volumes, e.g. muffler chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/061—Silencers using overlapping frequencies, e.g. Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the exhaust gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/007—Apparatus used as intake or exhaust silencer
    • 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
    • F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F04C29/0035—Equalization of pressure pulses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/063—Sound absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

Definitions

  • the invention relates to a pulsation silencer for a gaseous media flow which is supplied by a compressor, in particular by a compressor.
  • a silencer comprises a housing extending along a central axis with a media flow inlet and a media flow outlet as well as one or more absorber elements which are made of a sound-absorbing material and are used for sound absorption.
  • a wide variety of compressor designs are known for compressing gaseous media, in particular for generating compressed air.
  • the DE 601 17 821 T2 a multi-stage screw compressor with two or more compressor stages, each compressor stage comprising a pair of rotors for compressing a gas.
  • two or more variable speed drive means are provided, each drive means driving a respective compressor stage.
  • a control unit controls the speeds of the drive means, the torque and speed of each drive means being monitored so that the screw compressor provides gas at a required flow delivery rate and at a required pressure while minimizing the energy consumption of the screw compressor.
  • a pulsation damper for a pump which comprises a device body and a membrane, the membrane dividing an interior of the device body into a liquid chamber which can temporarily store a liquid to be transported by a piston pump, and a gas chamber which is filled with a gas for suppression is filled with pulsations and expands and contracts to change a capacity of the liquid chamber. This dampens pulsations due to an initial pressure of the transported liquid.
  • the DE 698 18 687 T2 describes a pulsation damper for damping low-frequency gas pulses with a container having an inlet, an outlet and sound-absorbing elements which are arranged in the container. At least one of the inlet and outlet is provided with a diffuser which comprises a tubular part which is provided with first openings.
  • the tubular part comprises an element which is provided with a number of second openings and is delimited by reinforcing bodies which extend around the circumference, at least one of the second openings being covered by a plate which is provided with the first openings, which are smaller than the second openings are.
  • Simple pulsation silencers are also known from practice, which are essentially formed in the manner of an elongated tube with absorber materials attached inside and which aim at damping both by absorption and reflection of the sound.
  • these known mufflers have several disadvantages.
  • a great length of the absorber part is decisive for achieving sufficient damping. Since the absorber materials used show constant attenuation over the length, the sound attenuation takes place gradually from the entry into the muffler to the exit, which means that a relatively large amount of sound is still radiated to the outside via the housing in the entry area of the muffler.
  • the sound penetrates, especially at high frequencies through the elongated damper tube, so that certain frequencies of the pulsations can pass the absorber almost undamped.
  • the DE 10 2016 100 140 A1 describes a noise damper for a compressed air system of a commercial vehicle.
  • the silencer has a housing with an air inlet, an air outlet and an insulating structure in the manner of a labyrinth.
  • An insulating material can be arranged in the housing, but the aim is to minimize this insulating material.
  • the FR 2 713 702 A1 shows a silencer for a gas flow of a compressor with a housing which has a gas flow inlet and a gas flow outlet.
  • An inner side wall of the housing has an acoustically absorbent coating, preferably made of fibrous material such as mineral wool, which is held by a grid.
  • An outer side wall has an acoustically absorbent coating which is held by a grille. The gas flow is guided through the flow space delimited by the grids.
  • a silencer which is designed as a detachably attachable component.
  • the silencer has baffles in its interior for a multiple deflection of a gas flow.
  • a gas flow inlet and a gas flow outlet are located in the area of an end face of the silencer.
  • One object of the present invention is to provide an improved pulsation silencer which is suitable for use in compressors, in particular in screw compressors, an inexpensive and simple one Structure and shows high attenuation values in a wide frequency spectrum.
  • the aim is to achieve the highest possible damping of the pulsations occurring in compressors over a short overall length, while at the same time only a small pressure loss may occur in the compressed medium.
  • any remaining sound radiation from the housing of the pulsation silencer should be minimized.
  • a pulsation silencer according to the appended claim 1.
  • the subclaims name some preferred embodiments.
  • the invention provides a compressor with such a pulsation silencer.
  • the pulsation silencer according to the invention is suitable for the damping of pulsations and the sound resulting therefrom in a gaseous media flow that is produced by a compressor is delivered.
  • the pulsation silencer initially has a housing extending along a central axis with a media flow inlet and a media flow outlet. Furthermore, several sleeve-shaped absorber elements are provided, which consist of sound-absorbing material and are arranged concentrically to one another in the housing.
  • the pulsation silencer differs significantly from known silencers, because in the prior art either only a single absorber element is used or several absorber elements are arranged axially one behind the other.
  • Each sleeve-shaped absorber element has an inlet area and an outlet area, which are positioned axially spaced apart from one another, and are preferably arranged on the opposite end faces of the absorber element.
  • the inlet area of the aerodynamically forwardmost absorber element is connected to the media flow inlet of the housing
  • the outlet area of the aerodynamically forwardmost absorber element is connected to the inlet area of the aerodynamically downstream absorber element and so on
  • the outlet area of the aerodynamically rearmost absorber element is connected to the media outlet of the housing.
  • the multiple absorber elements thus form multiple stages that are nested within one another.
  • Each of these stages works like a separate absorber.
  • the media flow changes direction several times in the silencer, preferably it meanders along the individual absorber elements.
  • a major advantage of the pulsation silencer is that the overall length is considerably reduced due to the nested arrangement of the absorber elements and the resulting meander-like guidance of the media flow.
  • the silencer according to the invention is more than half shorter than a conventional silencer with a straight line for the flow of media.
  • the absorber elements consist of the same sound-absorbing material, so that they all act on the same frequency range.
  • the individual absorber elements are matched to the damping of different frequency ranges, in particular by using different sound-absorbing materials.
  • the absorber elements preferably consist of mineral material, metal or plastic fabric, metal or ceramic foams, with chamber-like structures being advantageous. Multi-layer absorber material layers can also be used.
  • a preferred embodiment of the pulsation silencer uses rotationally symmetrical absorber elements which interlock telescopically and are arranged in an axially fixed manner in the housing.
  • the absorber elements can also have a rectangular or polygonal cross section.
  • at least three or more absorber elements are arranged in a ring to one another, with a difference remaining between the inner diameter of each outer absorber element and the outer diameter of an opposite inner absorber element in order to form the flow space there, for example with a width of 5 - 10 mm.
  • the absorber elements extend over almost the same axial length, so that at least 80%, preferably at least 90% of the longitudinal extent of the absorber elements axially overlap.
  • the inlet area and the outlet area are each arranged at the end faces of the absorber elements, the direction of flow of the media flow being reversed by 180 ° at the transition from one absorber element to the next absorber element. Since, due to the nested arrangement of the sleeve-shaped absorber elements, there is also an increase in cross-section for the media flow at the transition between the adjacent absorber elements (even with the same gap width in the flow space), the flow velocity is reduced, which results in additional damping. Depending on the design, it is easy to double the cross-sectional area through which the flow passes, and thus a significant reduction in speed from one stage to the next.
  • the reversal of direction when the media flow passes from one absorber element to the next can also be used positively to improve the damping properties, because the deflections mean that there is no direct "line of sight" between the media flow inlet and the media flow outlet, which means that pulsations of higher frequencies are directly transmitted downstream components prevented.
  • the housing preferably has an absorber element receiving area with a circular cross section; an end plate on which the media inlet is designed as a centrally located inlet opening which opens into a central inlet area of the foremost absorber element in terms of flow; and a flange, which lies opposite the end plate, forms the media outlet and into which an annular outlet region of the absorber element which is at the rear in terms of flow opens. Since the media entry into the silencer is in the inner area in this construction, the place with the greatest sound energy is there, i.e. H. far from the outer casing wall.
  • the next stage in the flow direction is also located inside the damper.
  • the sound energy has already been reduced in such a way that the sound energy still radiated by the housing is minimal.
  • the ratio of the axial length to the maximum cross-sectional extension (e.g. diameter) of each absorber element is less than 5, preferably less than 2.5. In the case of the radially outermost absorber element, this ratio is particularly preferably less than 1, preferably less than 0.75. It is also advantageous if the ratio of the overall axial length of the pulsation silencer to the length of the media flow through the absorber elements The distance covered is less than 1, preferably less than 0.5.
  • the compressor provided by the invention for compressing gaseous media comprises a compressor and a pulsation silencer which is arranged downstream of the compressor in terms of flow technology and is designed according to the embodiments described above or combinations of these embodiments.
  • the compressor is preferably designed as a screw compressor or a double screw compressor.
  • a significant advantage of using the pulsation silencer according to the invention is the drastic reduction in the required size, which has a positive effect on the design of the entire compressor.
  • a further developed embodiment of the pulsation silencer is characterized in that one or more of the absorber elements have additional cavities which act as resonator chambers.
  • the resonator chambers preferably extend at an angle to the flow spaces and serve for additional pulsation and sound dampening using reflection and resonance effects.
  • Fig. 1 shows a simplified longitudinal sectional view of a pulsation silencer 100 according to the invention, while Fig. 2 whose cross-section shows.
  • the muffler 100 has an essentially cylindrical housing 101 with an absorber element receiving area 102, an end plate 103 closing the housing at the end and a flange 104 axially opposite the end plate Compressor compressed gaseous media flow 107, in particular compressed air, is supplied.
  • a plurality of sleeve-like absorber elements 108 are arranged in the absorber element receiving area 102, in the example shown a front absorber element 108a in terms of flow, a middle absorber element 108b in terms of flow and a rear absorber element 108c in terms of flow.
  • the three absorber elements are telescopically inserted into one another and have essentially the same length in the axial direction. All absorber elements consist of sound-absorbing material, whereby the specific properties of the material can be selected to be differentiated between the individual absorber elements.
  • the media flow inlet 106 opens into the centrally located inlet area of the front absorber element 108a, so that the media flow initially flows inside the front absorber element 108a and is dampened by its material.
  • the interior of the front absorber element 108a can be hollow or filled with gas-permeable material, the flow resistance having to be kept low.
  • an outlet area is provided so that the media flow can exit from the front absorber element 108a.
  • the media flow flows in a first ring-shaped alternating region 110 into the inlet region of the central absorber element 108b, with a reversal of direction in the media flow 107.
  • the middle absorber element 108b surrounds the aerodynamically front absorber element 108a in a ring shape, a centering pin 111 provided on the middle absorber element 108b serving to hold the front absorber element 108a.
  • the media flow 107 now flows through a first cylindrical flow space 112, which extends in the axial direction between the front absorber element 108a and the middle absorber element 108b.
  • the media flow leaves the first cylindrical flow space 112 via an outlet area and flows into the inlet area of the rear absorber element 108c in a second annular changing area 113.
  • the media flow 107 now flows through a second cylindrical flow space 114, which extends in the axial direction between the middle absorber element 108b and the rear absorber element 108c.
  • the flow direction in the second flow space 114 is axially opposite to the flow direction in the first flow space 112.
  • the media flow 107 leaves the absorber element receiving area 102 via an outlet region of the aerodynamically rear absorber element 108c and then flows through a media flow outlet 116 in the flange 104 to the downstream units of the Compressor. It can be seen from the figures that the cross section available for the media flow increases significantly in the changing areas and is ultimately significantly larger at the media flow outlet 116 than at the media flow inlet 106.
  • all three absorber elements 108 each have a plurality of resonator chambers 117a, 117b and 117c in their wall.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Claims (9)

  1. Silencieux de pulsations (100) pour un flux gazeux (107) fourni par un compresseur, comprenant :
    - un boîtier (101) s'étendant le long d'un axe central avec une entrée de flux (106) et une sortie de flux (116) ;
    - plusieurs éléments absorbants en forme de douilles (108), constitués d'un matériau absorbant le son et disposés concentriquement les uns par rapport aux autres dans le boîtier (101), sachant
    ∘ qu'au moins trois éléments absorbants (108) sont disposés en forme annulaire les uns par rapport aux autres, qu'au moins 80 % de l'extension longitudinale des éléments absorbants (108) se chevauchent axialement,
    ∘ que chaque élément absorbant en forme de douille (108) possède une zone d'entrée et une zone de sortie, lesquelles sont positionnées espacées axialement l'une de l'autre,
    ∘ que la zone d'entrée de l'élément absorbant (108a) le plus en avant sur le plan de l'écoulement est reliée à l'entrée du flux (106) du boîtier (101), la zone de sortie de l'élément absorbant (108a) le plus en avant sur le plan de l'écoulement est reliée à la zone d'entrée de l'élément absorbant (108b) suivant sur le plan de l'écoulement et ainsi de suite, et la zone de sortie de l'élément absorbant (108c) le plus en arrière sur le plan de l'écoulement est reliée à la sortie du flux (116) du boîtier (101),
    ∘ qu'il reste respectivement un espace d'écoulement (112, 114) pour le flux (107) entre les sections de paroi - respectivement adjacentes radialement - de divers éléments absorbants (108).
  2. Silencieux de pulsations (100) selon la revendication 1, caractérisé en ce que les éléments absorbants (108) sont conçus par symétrie de rotation et s'engagent les uns dans les autres de manière télescopique mais fixe axialement.
  3. Silencieux de pulsations (100) selon l'une des revendications 1 à 2, caractérisé en ce que la zone d'entrée et la zone de sortie sont respectivement disposées sur les côtés frontaux des éléments absorbants (108) et que le sens d'écoulement du flux (107) subit une inversion de direction de 180° à chaque transition d'un élément absorbant vers un prochain élément absorbant.
  4. Silencieux de pulsations (100) selon l'une des revendications 1 à 3, caractérisé en ce que l'élément absorbant (108a) le plus en avant sur le plan de l'écoulement est disposé radialement à l'intérieur du boîtier (101) et que l'élément absorbant (108c) le plus en arrière sur le plan de l'écoulement est disposé radialement à l'extérieur du boîtier (101).
  5. Silencieux de pulsations (100) selon la revendication 4, caractérisé en ce que le boîtier (101) possède une zone de réception des éléments absorbants (102) avec une section transversale circulaire, que l'entrée du flux (106) a la forme d'une ouverture d'entrée située au centre d'une plaque frontale (103), laquelle débouche dans une zone d'entrée centrale de l'élément absorbant (108a) le plus en avant sur le plan de l'écoulement et que la sortie du flux (116) est conçue sous forme d'une bride (104) sur le boîtier (101) qui est opposée à la plaque frontale (103) et dans laquelle débouche une zone de sortie annulaire de l'élément absorbant (108c) le plus en arrière sur le plan de l'écoulement.
  6. Silencieux de pulsations (100) selon l'une des revendications 1 à 5, caractérisé en ce que le rapport entre la longueur axiale et l'extension maximale de la section transversale de chaque élément absorbant est inférieur à 2,5, sachant que ce rapport est de préférence inférieur à 0,75 dans le cas de l'élément absorbant (108c) radialement le plus à l'extérieur.
  7. Silencieux de pulsations (100) selon l'une des revendications 1 à 6, caractérisé en ce que le rapport entre toute la longueur extérieure axiale du silencieux de pulsations et la longueur du trajet parcouru par le flux (107) à travers les éléments absorbants (108) est inférieur à 1.
  8. Compresseur pour la compression de fluides gazeux, comprenant un compresseur et un silencieux de pulsations (100) disposé derrière le compresseur sur le plan de l'écoulement, le silencieux de pulsations étant conçu conformément à l'une des revendications 1 à 7.
  9. Compresseur selon la revendication 8, caractérisé en ce que le compresseur est conçu sous la forme d'un compresseur à vis ou d'un compresseur à double vis.
EP18164781.9A 2017-04-10 2018-03-28 Silencieux de pulsations pour compresseurs Active EP3388678B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017107599.2A DE102017107599A1 (de) 2017-04-10 2017-04-10 Pulsations-Schalldämpfer für Kompressoren

Publications (2)

Publication Number Publication Date
EP3388678A1 EP3388678A1 (fr) 2018-10-17
EP3388678B1 true EP3388678B1 (fr) 2021-05-05

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Application Number Title Priority Date Filing Date
EP18164781.9A Active EP3388678B1 (fr) 2017-04-10 2018-03-28 Silencieux de pulsations pour compresseurs

Country Status (5)

Country Link
US (1) US11067084B2 (fr)
EP (1) EP3388678B1 (fr)
CN (1) CN108691773A (fr)
CA (1) CA3000491A1 (fr)
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7436178B2 (ja) * 2019-10-23 2024-02-21 株式会社ブリヂストン 排水管構造
CN112412804B (zh) * 2020-10-13 2022-11-04 珠海格力节能环保制冷技术研究中心有限公司 一种复合形吸气口与排气口消音组件及压缩机
CN117759569B (zh) * 2023-12-29 2024-10-01 哈尔滨工程大学 一种能够消声的进气旁通再循环结构

Family Cites Families (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US806714A (en) * 1905-03-30 1905-12-05 John F Laird Exhaust-muffler.
US858455A (en) * 1907-01-19 1907-07-02 Carl O Hedstrom Muffler.
US1598578A (en) * 1921-11-21 1926-08-31 Maxim Silencer Co Silencer
US1953543A (en) * 1932-07-23 1934-04-03 George C Rensink Air cleaner and silencer for internal combustion engines
US2050581A (en) * 1932-10-05 1936-08-11 Orem Frederick Strattner Air cleaning and sound-silencing apparatus
US3073684A (en) * 1959-06-01 1963-01-15 John E Morris Gas purifying muffler
US3202240A (en) * 1963-12-09 1965-08-24 Kenneth L Treiber Muffler with aspirating means
DE1628835A1 (de) * 1966-04-02 1971-06-16 Altenburg Elektrowaerme Einrichtung zur Geraeuschminderung an elektromotorisch angetriebenen Geraeten
US3612216A (en) * 1969-12-01 1971-10-12 Gen Impact Extrusions Mfg Ltd Muffler can
DE2737677C2 (de) 1977-08-20 1984-05-10 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Einrichtung zur Fördermengenregelung von Verdichtern
DE2909675C3 (de) 1979-03-12 1981-11-19 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Verfahren zur kondensatfreien Zwischenkühlung verdichteter Gase
FR2598176B1 (fr) * 1986-04-30 1990-01-19 Boet Sa Andre Silencieux pour courant gazeux
US4929161A (en) 1987-10-28 1990-05-29 Hitachi, Ltd. Air-cooled oil-free rotary-type compressor
JPH03108818U (fr) * 1990-02-21 1991-11-08
DE9014888U1 (de) * 1990-10-27 1991-01-24 Leybold AG, 6450 Hanau Schalldämpfer
US5196653A (en) * 1991-05-20 1993-03-23 The United States Of America As Represented By The Secretary Of The Navy Muffler for air powered turbine drive
FR2713702B1 (fr) * 1993-12-14 1996-03-01 Boet Sa Andre Silencieux pour courant gazeux.
JP3296205B2 (ja) 1996-09-20 2002-06-24 株式会社日立製作所 オイルフリースクロール圧縮機およびその冷却システム
NL1006892C2 (nl) 1997-08-29 1999-03-02 Q E International Bv Pulsatiedemper.
SE512070C2 (sv) 1998-03-18 2000-01-24 Tetra Laval Holdings & Finance Anordning för högtryckspumpning eller homogenisering av vätskor
US6095194A (en) 1998-03-20 2000-08-01 Nippon Pillar Packaging Co., Ltd. Pulsation suppression device for a pump
US6068447A (en) 1998-06-30 2000-05-30 Standard Pneumatic Products, Inc. Semi-automatic compressor controller and method of controlling a compressor
BE1012944A3 (nl) 1999-10-26 2001-06-05 Atlas Copco Airpower Nv Meertraps-compressoreenheid en werkwijze voor het regelen van een der gelijke meertraps-compressoreenheid.
DE10003869C5 (de) 2000-01-28 2007-11-08 Aerzener Maschinenfabrik Gmbh Verfahren zum Komprimieren von fluiden Fördermedien
GB2367332B (en) 2000-09-25 2003-12-03 Compair Uk Ltd Improvements in multi-stage screw compressor drive arrangements
JP3817420B2 (ja) 2000-10-31 2006-09-06 株式会社日立産機システム 回転速度可変形オイルフリースクリュー圧縮機およびその運転制御方法
US6595757B2 (en) 2001-11-27 2003-07-22 Kuei-Hsien Shen Air compressor control system
DE10249215A1 (de) * 2002-10-22 2004-05-13 BSH Bosch und Siemens Hausgeräte GmbH Linearverdichtereinheit
US7118348B2 (en) 2003-03-06 2006-10-10 General Electric Company Compressed air system and method of control
EP1703618B1 (fr) 2005-03-14 2013-05-15 Kaeser Kompressoren AG Moteur électrique à refroidissement par air
JP4673136B2 (ja) 2005-06-09 2011-04-20 株式会社日立産機システム スクリュー圧縮機
US7610993B2 (en) * 2005-08-26 2009-11-03 John Timothy Sullivan Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities
FR2890418A1 (fr) 2005-09-02 2007-03-09 Atlas Copco Crepelle S A S Installation de compression haute pression a plusieurs etages
EP1984628B1 (fr) 2006-02-13 2014-12-17 Ingersoll-Rand Company Systeme de compression a plusieurs etages et son procede d'actionnement
NL1031270C2 (nl) 2006-03-02 2007-09-04 Ecoplay Int Bv Leidingstelsel voor water met bewaking tegen aftakkingen, systeem en werkwijze daarvoor.
US8303260B2 (en) 2006-03-08 2012-11-06 Itt Manufacturing Enterprises, Inc. Method and apparatus for pump protection without the use of traditional sensors
DE102006020334B4 (de) * 2006-04-28 2008-07-10 Man Diesel Se Filterschalldämpfer
JP4741992B2 (ja) 2006-07-19 2011-08-10 株式会社日立産機システム オイルフリースクリュー圧縮機
JP2008133811A (ja) 2006-11-29 2008-06-12 Hitachi Ltd パッケージ型圧縮機
JP5248373B2 (ja) 2009-03-11 2013-07-31 株式会社日立産機システム 水噴射式空気圧縮機
JP2010275939A (ja) 2009-05-29 2010-12-09 Hitachi Industrial Equipment Systems Co Ltd 水冷式オイルフリー空気圧縮機
DE102010008403A1 (de) * 2010-02-18 2011-08-18 J. Eberspächer GmbH & Co. KG, 73730 Schalldämpfer
BE1019299A3 (nl) 2010-04-20 2012-05-08 Atlas Copco Airpower Nv Wekwijze voor het aansturen van een compressor.
WO2012026317A1 (fr) 2010-08-27 2012-03-01 株式会社日立産機システム Compresseur de gaz refroidi par huile
DE102010049578A1 (de) * 2010-10-26 2012-04-26 Webasto Ag Schalldämpfereinrichtung für eine Fluidleitung sowie Heizgerät mit einer Schalldämpfereinrichtung
CN102241391B (zh) * 2011-05-18 2012-10-24 湖南新云医疗投资有限公司 用于制氧系统的分子筛解吸器
JP5774455B2 (ja) 2011-11-30 2015-09-09 株式会社日立産機システム 無給油式圧縮機
EP2886862B1 (fr) 2013-12-17 2020-09-02 Kaeser Kompressoren Se Compresseur
DE102014107126A1 (de) 2014-05-20 2015-11-26 Harald Wenzel Mehrstufige Verdichteranlage zur Erzeugung eines komprimierten Gase
JP6382672B2 (ja) 2014-10-02 2018-08-29 株式会社日立産機システム パッケージ型圧縮機
JP2016145557A (ja) 2015-02-09 2016-08-12 アネスト岩田株式会社 パッケージ型流体機械
CZ29658U1 (cs) * 2015-06-26 2016-07-25 ula Martin Ĺ Výfukový rezonátor dvoudobého motoru pro motorový plovák
DE102016100140A1 (de) * 2016-01-05 2017-07-06 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Geräuschdämpfer für ein Druckluftsystem eines Fahrzeugs, insbesondere eines Nutzfahrzeugs
US10359044B2 (en) 2016-05-06 2019-07-23 Powerex/Scott Fetzer Company Compressor system
CN105888777B (zh) * 2016-06-16 2018-09-25 贺佳国 一种微型气体推进器消音装置

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DE102017107599A1 (de) 2018-10-11
CA3000491A1 (fr) 2018-10-10
EP3388678A1 (fr) 2018-10-17
CN108691773A (zh) 2018-10-23
US20180291905A1 (en) 2018-10-11

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