EP2633178A1 - Dispositif assourdisseur pour une conduite de fluide et appareil de chauffage muni d'un dispositif assourdisseur - Google Patents

Dispositif assourdisseur pour une conduite de fluide et appareil de chauffage muni d'un dispositif assourdisseur

Info

Publication number
EP2633178A1
EP2633178A1 EP11776416.7A EP11776416A EP2633178A1 EP 2633178 A1 EP2633178 A1 EP 2633178A1 EP 11776416 A EP11776416 A EP 11776416A EP 2633178 A1 EP2633178 A1 EP 2633178A1
Authority
EP
European Patent Office
Prior art keywords
resonator
tube
side wall
resonator tube
wall
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.)
Withdrawn
Application number
EP11776416.7A
Other languages
German (de)
English (en)
Inventor
Harald Trumler
Marco Pietrzyk
Werner Zimmermann
Nikolaus Gerhardt
Peter Neidenberger
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.)
Webasto SE
Original Assignee
Webasto SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Webasto SE filed Critical Webasto SE
Publication of EP2633178A1 publication Critical patent/EP2633178A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • 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
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • F02M35/1266—Intake silencers ; Sound modulation, transmission or amplification using resonance comprising multiple chambers or compartments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • F23M20/005—Noise absorbing means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2281—Air supply, exhaust systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/13003—Means for reducing the noise in smoke conducing ducts or systems

Definitions

  • Silencer device for a fluid line and heater with a silencer device
  • the present invention relates to a silencer device for a fluid line and a heater with a silencer device.
  • absorption materials are often used to achieve a sound attenuation. Such absorbent materials can be arranged, for example, around suction lines of a heater.
  • absorption materials are generally expensive and do not always achieve a desired sound attenuation in all relevant frequency ranges. Especially in the low-frequency range of below 1 kHz sound frequency, most known absorber materials are not efficient dampers. For sufficient damping, therefore, a considerable amount of absorption material must be used, which leads to a verteu tion of the muffler device.
  • the muffler device must be sufficiently large to accommodate the absorbent material can. Especially for use in mobile applications such as a vehicle, however, a compact design is desirable.
  • a silencer device for a fluid line which is inexpensive to produce and in particular achieves a desired sound attenuation even in low frequency ranges.
  • the resonator assembly comprises a first resonator tube having a first resonator cavity formed for ⁇ / 4 attenuation of at least one acoustic wavelength, the first resonator tube having a first longitudinal direction, two end walls opposite each other in the first longitudinal direction, and a first sidewall extending between the end walls; and a second resonator tube having a second resonator cavity formed for ⁇ / 4 attenuation of at least one sonic wavelength, the second resonator tube having a second longitudinal direction, two end walls opposite each other in the second longitudinal direction and a second side wall extending between the end walls, and wherein the second resonator space is formed between the second side wall and the end walls of the second resonator tube.
  • the first resonator tube and the second resonator tube are connected to each other in a sound-transmitting manner via a first connection opening between the first side wall and the second side wall.
  • the first resonator tube is connected via a connection opening sound transmitting with the fluid line or connectable. This results in a compact series connection of the resonator tubes of the resonator arrangement.
  • each of the resonator tubes is designed such that its resonant length corresponds to a quarter of a wavelength of a specific noise or a specific noise component.
  • the distance between the end walls of a resonator tube may be referred to as a resonator length.
  • a resonator tube has two openings, such as a connection opening and a connection opening. Accordingly, a resonance tube may have a plurality of resonance lengths. In addition, optionally, a single opening may have different resonance lengths with respect to both end walls of a resonator tube.
  • the resonator tubes can have the same resonator lengths and / or resonance lengths.
  • the first resonator tube can serve as a ⁇ / 4 tube for a first wavelength or a first frequency, while the resonator arrangement as a whole with the series-connected first and second resonator tubes with a composite total length as a ⁇ / 4 tube for a lower Frequency works.
  • the second resonator tube can accordingly contribute to the attenuation of the first wavelength or be designed to attenuate a further wavelength.
  • connection opening may be formed such that it allows a sound-transmitting connection between associated side walls.
  • a connection opening can represent a continuous opening between the side walls or in an inner wall.
  • the entire opening area of a connection opening or a connection opening corresponds to or is larger than a cross-sectional area of the fluid line.
  • the cross-sectional area of the fluid conduit may have a normal that is parallel to fluid flow through the conduit.
  • a sidewall of a resonator tube may extend in particular parallel to a normal direction of one of the end walls of the resonator tube.
  • a side wall may in particular designate a wall directed towards the inside of a resonator tube or to the resonator chamber.
  • a side wall may be formed by the respective sides of two walls, which the Surround resonator tube or the resonator chamber. It can be provided that a connection opening has a normal, which runs orthogonal to the longitudinal direction of one of its associated resonator tubes.
  • a longitudinal direction may in particular be the direction of the greatest extent of a resonator tube. The longitudinal direction may be defined by the opposite end walls.
  • Each of the end walls may be formed as a continuous element without holes.
  • an end wall is suitable for reflecting the sound waves to be damped.
  • the resonator can be formed in one piece. However, it is also conceivable that the resonator arrangement is formed by a plurality of elements.
  • the components of a multi-piece resonator assembly may be at least partially fixedly connected together in a suitable manner, such as by welding, screwing, gluing or clipping. In particular, it can be provided that the resonator arrangement has two or more than two components which are inserted into one another.
  • the resonator assembly or the components of the resonator assembly may be made of any suitable material, such as metal or preferably a hard plastic material such as a polyamide material.
  • a resonator tube may have a round, a rectangular, in particular square, or any other suitable cross-section.
  • the muffler device is particularly suitable for a heater, in particular a heater of a motor vehicle. It can be provided in the intake of a heater for motor vehicles.
  • the fluid line may have a supply port and a drain port.
  • the fluid line can be an intake line or can be connected or connectable to an intake line. It is conceivable that the fluid line is an air intake line, for example for a heater.
  • the resonator arrangement can be designed such that it completely surrounds the fluid line.
  • connection opening and / or the connection opening may be expedient for completely circulate the associated side walls or the fluid line, for example, by defining an opening circle with a specific opening width, for example.
  • the opening widths of different openings may be the same or different.
  • a sound-transmitting connection is intended to transmit sound waves, if possible without changing their frequency. Such a connection can be made for example via an opening. It can also be provided that a membrane is arranged above an opening.
  • a sound transmitting connection or opening may also be suitable for conducting a fluid.
  • a fluid can be a liquid or a gas, in particular air.
  • the muffler device may comprise absorption material.
  • the Sorbent material may surround the fluid conduit and / or a fluid supply and / or a fluid drain.
  • the resonator arrangement can generally be designed as an arrangement of resonator tubes which surround one another concentrically and are interconnected by connection openings. The resonator tubes can surround the fluid line concentrically.
  • first longitudinal direction and the second longitudinal direction extend parallel to one another.
  • the resonator tubes can be arranged close to each other, which enables a compact construction of the resonator arrangement.
  • the first and second side walls may have a common inner wall in which the first connection opening is provided.
  • an inner wall can each be designed to at least partially form the side wall of two adjacent resonator tubes or a resonator tube and the fluid line.
  • the first side wall and the second side wall are each formed by that side of the inner wall which faces the first or second resonator chamber.
  • a common inner wall can be multi-layered. It is also conceivable that the common inner wall is formed in one piece. This results in a particularly compact design of the resonator.
  • the first connection opening is arranged in an end region of the first and / or the second resonator tube.
  • An end region may lie in the region of an end wall.
  • the connection opening may extend from the end wall to an edge facing the opposite end wall.
  • the resonator length of the resonator tubes can be used to form the resonant length to minimize the overall extension of the muffler device.
  • the first connection opening interrupts at least a portion of a connection of the inner wall or one of the side walls with the end wall.
  • connection opening may be provided in an end region of the first resonator tube.
  • connection opening may be provided in the end region of the resonator tube, which is opposite to the end region in which the connection opening is provided.
  • the first connection opening may be provided in an end portion of the first resonator tube, that is, at or near one of the end walls, while the connection opening may be provided in the other end portion, that is, at or near the other end wall of the first resonator tube.
  • the openings are not directly opposite, whereby the length of the resonator tubes can be exploited.
  • the muffler device expediently comprises the fluid line.
  • the muffler device can be easily connected via the fluid line, for example with a fluid connection of a device to be damped as a heater of a motor vehicle.
  • the fluid conduit is at least partially formed by a wall which forms a side wall of one of the resonator tubes.
  • the muffler device is designed such that it is constructed without fluid line and is subsequently mounted on an already existing fluid line. For this purpose, it may be necessary to provide the fluid line with a corresponding connection opening, to which the silencer device can be connected or connected.
  • the muffler device may further comprise a third resonator tube having a third resonator cavity formed for ⁇ / 4 attenuation of at least one acoustic wavelength, the third resonator tube having a third longitudinal direction, two end walls opposite each other in the third longitudinal direction, and a third sidewall extending between the end walls; wherein the third resonator cavity is formed between the third sidewall and the end walls of the third resonator tube, the third resonator tube being connected or connectable to the fluid conduit by a second connection opening.
  • the third resonator tube can achieve the attenuation of another sound frequency that depends on the selected length of the third resonator tube. It is also conceivable to provide additional resonator tubes, which are connected or connectable via their own connection openings with the fluid line.
  • the resonator arrangement further has at least one further resonator tube with a further resonator space designed for ⁇ / 4 attenuation of at least one wavelength of a sound signal, wherein the further one Resonator tube has a further longitudinal direction, two opposite each other in the longitudinal direction opposite end walls and extending between the end walls further side wall and wherein the further resonator space is formed between the further side wall and the end walls of the further resonator tube.
  • the further resonator tube and the first or second resonator tube are connected to each other in a sound-transmitting manner by a second connection opening between the further side wall and the first or second side wall.
  • a series connection of at least three resonator tubes may be provided in the resonator arrangement.
  • the further longitudinal direction or longitudinal directions can run parallel to the first and / or second longitudinal direction.
  • the statements made above for the first connection opening apply analogously.
  • the resonator arrangement acts as a ⁇ / 4 tube for different frequencies. Namely, each resonator tube acts individually with its length as a ⁇ / 4 tube. With different lengths of the resonator tubes, therefore, different frequencies can be damped solely by the individual resonator tubes.
  • the resonator tubes act with the sums of their lengths, for example the first resonator tube combined with the second resonator tube, the second resonator tube combined with the third resonator tube, and all three resonator tubes together for a wavelength corresponding to the summed resonance length as ⁇ / 4 -Tube. It is of course possible to connect more than three resonator tubes via suitable connection openings sound-transmitting. In each case two of the interconnected resonator tubes may have a common inner wall, as described above.
  • the first connection opening may be provided in one end portion of the second resonator tube, that is, at or near one of the end walls, while the second connection opening may be provided in the other end portion, that is, at or near the other end wall of the second resonator tube.
  • the connection openings are not directly opposite, whereby the length of the resonator tubes can be exploited.
  • the first longitudinal direction may run parallel to a longitudinal direction of the fluid line and / or a flow direction of fluid in the fluid line. This allows a particularly compact design of the muffler device.
  • a connection opening has a normal, which is orthogonal to the flow direction of the fluid in the fluid line.
  • the fluid may be in particular sucked or discharged air. It is particularly advantageous if the muffler device has two or more resonator arrangements which are each connected or connectable to the fluid line via a connection opening.
  • Each resonator arrangement can have at least two resonator tubes, which are arranged as described above and connected to one another via connection openings. It is particularly expedient if the lengths of the resonator tubes of the resonator arrangements differ from one another. Moreover, it is possible that the lengths of the resonator tubes differ from one another within a resonator arrangement. Thus, a large spectrum of frequencies can be damped.
  • the resonator arrangements can be connected in series in the flow direction. It is also conceivable to arrange the resonator arrangements with respect to the fluid line opposite one another. In this case, each resonator arrangement should be connected or connectable to the fluid line via its own, suitably designed connection opening which only partially surrounds the fluid line. A combination of both arrangement concepts with several resonator arrangements is conceivable.
  • a muffler device is also conceivable, which is connected or connectable to an absorption device as an alternative or in addition to some or more of the abovementioned features.
  • the absorption device may comprise a plurality of layers, for example a sealing layer and an absorption layer.
  • the absorption layer may be a sound-damping layer, which may be an elastic layer. It is conceivable that the absorption layer has, for example, an open-pored foam as a sound-absorbing material.
  • the sealing layer may comprise a fluid-tight material that may be elastic. In particular, the sealing layer may comprise a closed-cell foam.
  • the sealing layer can be materially bonded to the absorption layer. It can be provided that the sealing layer is connected as a lamination with the absorption layer.
  • the bonding or lamination between the absorbent layer and the sealant layer can be made, for example, by a suitable adhesive, wax, resin, or thermal treatment, such as dry lamination, wet lamination, and / or thermo-lamination.
  • a suitable adhesive, wax, resin, or thermal treatment such as dry lamination, wet lamination, and / or thermo-lamination.
  • the absorptive ons Mrs and the sealing layer are integrally formed.
  • the absorber can provide both sound attenuation and sealing.
  • the sealing layer can be designed and arranged in such a way that it completely covers and seals a contact area between the silencer arrangement and the connection body. It is expedient if the absorption layer is wider than the sealing layer in order to allow a good sound absorption.
  • the absorption layer may comprise a suitable sound-damping material, for example an open-pored foam which is suitable for sound damping in a certain frequency range.
  • the sealing layer may be formed sound-impermeable. In particular, it can be provided that the sealing layer is designed not to conduct sound from the muffler device to the outside.
  • the material of the sealing layer may have a sound-absorbing or reflective effect in a suitable frequency range.
  • the silencer device can be connectable or connected to a fluid connection via a connection body.
  • the connection body may, for example, have a suitable pipe connection for connection to a fluid connection. It is conceivable that the muffler device is at least partially received in the connection body in a connection region.
  • connection body may, for example, have a side wall surrounding the sound-damping device.
  • the absorption device can be arranged or accommodated in the connection body and / or between the connection body and the silencer device.
  • the absorption device can thus be connected or connectable via the connection body with the muffler device.
  • the absorption device is accommodated in the connection body in such a way that the sealing device seals the connection body with respect to the silencer device.
  • the absorption device can be accommodated in the connection body in such a way that it seals the silencer device and / or a boundary wall and / or outer wall of the silencer device with respect to the connection body.
  • the absorption device may be accommodated such that the sealing layer sealingly bears against the inside of a side wall of the connection body and / or on a boundary wall and / or outer wall of the silencer device.
  • the sealing layer can rest non-positively and / or positively against the boundary wall and / or the side wall and / or outer wall.
  • a fluid-conducting channel may be provided, which has a fluid-conducting connection between the Fluid line of the muffler device and a fluid connection can provide.
  • the connection body and the muffler device can be connected or connectable to one another in a force-locking and / or form-fitting manner.
  • a boundary wall and / or an outer wall of the silencer device has at least one elastic region, which may be, for example, a curved region of the wall.
  • the connecting body can be placed or pushed onto the muffler device. It can be provided in particular that the elastic region is compressed by the connection body. In this case, a restoring force of the elastic region can provide a non-positive and / or positive connection between the connection body and the boundary wall and / or outer wall. For example, the boundary wall and / or outer wall can be pressed against a surrounding side wall of the connection body. It can be provided that the connection body is connected or connectable via a latching connection with the muffler device.
  • the invention also relates to a heater, in particular a heater for a motor vehicle, with a silencer device described above.
  • the fluid line can be designed in particular as a line for sucked air for the heater.
  • FIG. 1 shows a schematic representation of a first muffler device
  • Figure 2 is a schematic representation of a further muffler device
  • Figure 3 is a schematic representation of a further muffler device with
  • Figure 4 is a schematic representation of a connector body for a muffler device.
  • the same reference numerals designate the same or functionally similar components.
  • the muffler device 10 comprises a fluid line 12, through which a fluid, in particular air, can be guided.
  • the fluid line has a fluid outlet 11 and a fluid supply 13. Accordingly, a flow direction of the fluid in the fluid line 12 extends from 13 to 11, in the drawing, therefore, from right to left. Sound propagation from an aggregate connected to the fluid outlet 11, such as a heating device, takes place in the opposite direction.
  • the fluid line 12 is surrounded by a resonator arrangement 14 which has three resonator tubes 16, 18 and 20 connected in series and concentrically with each other.
  • the resonator tube 16 is connected in a sound-transmitting manner to the fluid line 12 via a connection opening 15 in a wall 22.
  • the wall 22 forms an inner part of a side wall 23 for the resonator tube 16 connected to it.
  • An inner wall 24 forms another, outer part of a side wall 23 of the resonator tube 16.
  • the inner wall 24 also forms an inner part of the side wall 25 of the resonator tube 18 and can be regarded as a common inner wall of the resonator tubes 16 and 18.
  • An outer wall 28 bounds the resonator assembly 14 to the outside and forms another, inner part of the side wall 27 of the resonator tube 20.
  • the resonator tubes 16, 18 and 20 are closed by delimiting walls 30, 32 extending orthogonally to the inner walls.
  • an end wall 31 is formed for the resonator 16.
  • the other boundary wall 32 forms a second end wall 33 for the resonator tube 16.
  • the end walls 31, 33 face each other with respect to a longitudinal direction of the resonator tube 16.
  • the boundary walls 30, 32 form end walls for the resonator tubes 18 and 20.
  • the end walls of a resonator tube are each opposite to a longitudinal direction of the associated resonator tube.
  • each resonator tube is manufactured individually and has its own, separately formed end walls.
  • the end walls and side walls are substantially impermeable to sound to be damped.
  • the end walls are for reflection to be damped Schallwel- suitable.
  • the connection opening 15 completely surrounds the fluid line 12.
  • the total area of the circumferential connection opening 15 is chosen such that it equals the cross-sectional area of the fluid line 12.
  • the resonator tube 16 is connected in a sound-transmitting manner via a connection opening 17 to the resonator tube 18.
  • connection opening 17 is provided in the inner wall 24 lying between these resonator tubes and thus in each case extending between the side walls 23, 25 of these resonator tubes.
  • the resonator tube 18 is connected in a sound-transmitting manner to the resonator tube 20 via a connection opening 19 provided in the inner wall 26.
  • the connection openings 17, 19 each lie in an end region of the resonator tubes.
  • the connection openings 17, 19 adjoin associated end walls or extend perpendicularly from adjacent end walls.
  • the connection openings 17, 19 each form a circle surrounding the associated inner wall 24, 26.
  • the total area of a connection opening 17, 19 corresponds to the cross-sectional area of the fluid line 12.
  • the resonator tubes 16, 18 and 20 are designed such that they result in a concentric arrangement around the fluid line 12.
  • the absorption device 40 may completely surround the fluid line 12 or the fluid outlet 11 and be designed for high-frequency damping.
  • the absorption material of the absorption device 40 may in this case consist of a foam, which shows a good absorption behavior, especially at high frequencies. Since the absorption material is intended for damping relatively high frequencies (higher than one kHz), no particularly thick absorption material layer is necessary, so that the absorption material can be limited to the overall height of the resonator arrangement 14, for example.
  • the resonator arrangement 14 is expediently dimensioned such that the resonator tubes 16, 18, 20 have the same resonator lengths from end wall to end wall.
  • the resonator length can be 80mm in this example.
  • the connection opening 15 and the connection openings 17, 19 can be 5 mm wide.
  • a single resonator 16, 18, 20 thus acts as a ⁇ / 4 damper for sound waves having a frequency of 1002 Hz.
  • Three resonator tubes act together as ⁇ / 4 dampers for a frequency of 350 Hz.
  • the damped frequencies are only almost in an integer ratio to each other, since the respective total resonance length is composed of the resonance length of one of the resonator tubes with the opening participating in the resonance and the resonator length or the resonator lengths of the resonator tubes, whose end walls play a role in the resonance.
  • the thickness of the walls 22, 24, 26 plays a role.
  • a resonant length of the resonators 16 and 18 is determined by the length between the edge of the connection opening 15 to the end wall 31, the length of the resonator 18 between the end walls and the thickness of the inner wall 24. It is understood that 14 ⁇ / 4 attenuation for different sound wavelengths takes place through the resonator 14.
  • the resonator tubes 16, 18, 20 are aligned with respect to their longitudinal directions parallel to one another and parallel to the longitudinal direction of the fluid line 12 or to the flow direction of fluid in the fluid line 12.
  • the muffler device shown is particularly suitable for a heater of a motor vehicle.
  • FIG. 2 shows a variant of a muffler device 10 from FIG. 1, with only the differences from FIG. 1 being discussed in greater detail.
  • two connection body 42, 44 are provided, each of which provide a fluid port 13, 1 1 for connecting the fluid line 12 to other, not shown components or as described above for fluid supply or fluid discharge.
  • the connecting body 42 carries the inner walls 22 and 26.
  • the connecting body 44 carries the inner wall 24.
  • the terminal body 42 has a boundary wall 30 which forms the end walls of the resonator tubes 16, 18 and 20 on the side of the terminal body 42.
  • the connecting body 44 forms a boundary wall 32 and thus the opposite end walls of the resonator tubes 16, 18, 20.
  • the resonator 14 can be assembled in this example by simply nesting two components, namely the connecting body 42, 44. It is also conceivable that the outer wall 28 is formed as a separate component, which is connected to the connection bodies 42, 44 as described above.
  • FIG. 3 shows a further variant of a muffler device 10 from FIG. 1, wherein only the distinction to FIGS. 1 and 2 will be discussed in greater detail.
  • an absorber 46 is provided between the fluid conduit 12 and an inner wall 41 of the resonator tube 16.
  • the absorption device 46 surrounds the fluid line 12.
  • the wall 41 and the absorber 46 forming the Layer of absorbent material can be considered together fulfilling the function of the inner wall 22 of Figure 1.
  • the absorption material may optionally be suitably coated with a sound-permeable coating 21.
  • connection body 44 is a component produced separately from the outer wall 28.
  • the boundary wall 32 is formed by a wall integrally formed with the outer wall 28.
  • the connection body 42 carries the inner walls 26 and 41.
  • connection body 42 and the outer wall 28 can be particularly easily connected by a clip connection 48.
  • the terminal body 42 may be connected by a clip connection 50 with the outer wall 28.
  • a further absorption device 40 is added between the connection body 44 and the boundary surface 32. This can be designed to attenuate the same frequencies as the absorption device 46.
  • the absorption device 40 can also be suitable for attenuating other frequencies, in particular for attenuating lower frequencies.
  • the absorption device 40 in the construction shown here, it is possible to form the absorption device 40 with a greater installation depth than the absorption device 46, since it extends substantially from the edge of the fluid line 12 to the height of an outer wall region of the resonator arrangement. As a result, lower frequencies can be damped than by the absorption layer 46, which is thinner in comparison.
  • a water separator 52 is furthermore provided, which in a known manner serves to separate water from the supplied air.
  • FIG. 4 shows a schematic illustration of a connection body for a silencer device, which may in particular be one of the silencer devices 10 described herein.
  • the arrangement can be regarded as a muffler device with a connected connection body.
  • a connection body 44 which provides a fluid connection 1 1 for the fluid line 12.
  • the connection body 44 has a pipe connection which is received in a transverse wall 49 of a connection body wall 45.
  • the connection body wall 45 furthermore has a side wall 47.
  • the transverse wall 49 extends approximately transversely to the flow direction of a fluid in the fluid line and is formed between the pipe connection and the side wall 47.
  • connection body 44 which comprises the pipe connection and the connection body wall 45 with transverse wall 45 and side wall 47, is integrally formed.
  • the side wall 47 surrounds the silencer device at least partly from the outside and picks them up.
  • the side wall 47 may at least partially surround and / or be in contact with a boundary wall 32 and / or an outer wall 28 of the muffler device.
  • the side wall 47 may be formed parallel to the fluid line 12.
  • the connecting body 44 may in particular be placed or pushed onto the muffler device 10.
  • the boundary wall 32 has a bent elastic region 34.
  • the boundary wall 32 and / or an outer wall 28 of the muffler device connected thereto can be elastically adapted to the surrounding side wall 47 of the connection body 44.
  • a non-positive and / or positive connection between the sound damper device 10 and / or the boundary wall 32 and / or an outer wall 28 and the connection body 44 can be provided.
  • a non-positive and / or positive connection between the boundary wall 32 and / or outer wall 28 and the surrounding side wall 47 can be provided. Because the boundary wall 32 can be easily compressed by the side wall 47 and presses due to their elastic properties provided by the elastic properties in turn from the inside against the side wall 47.
  • an absorption device 40 is added between the terminal body wall 45 and the boundary wall 32.
  • the absorption device 40 is thus accommodated in a limited by the boundary wall 32, the transverse wall 49 and the side wall 47 receiving space.
  • the absorption device 40 has an absorption layer 54 and a sealing layer 56.
  • the absorption layer 54 consists of a sound-damping material, for example an open-pore foam.
  • the sealing layer 56 may consist of a fluid-tight elastic material, in particular a closed-cell foam.
  • the sealing layer 56 is connected as a lamination and / or materially bonded to the absorption layer 54.
  • This compound may be provided, for example, by a suitable adhesive, wax, resin, or suitable thermal treatment, such as by wet lamination, dry lamination, and / or thermo-lamination. It is provided that the absorption device 40 and in particular the sealing layer 56 is accommodated in the receiving space such that the sealing layer 56 provides a seal between the connecting body 44 and the muffler device 10 and / or the boundary wall 32.
  • the sealing layer 56 provides a seal at the points A and B at which the side wall 47 of the connection body 44 contacts the muffler device and in particular the boundary wall 32.
  • the sealing layer 56 is designed to completely cover the contact region between the muffler device and the connection body 44 and to seal it off. in particular, points A and B in which the boundary wall 32 and the connection body 44 touch each other. Thus, it can be prevented that undesirable from the outside fluids and contaminants penetrate via the connector body 44.
  • the sealing layer 56 may be formed such that it does not transmit sound from the muffler device to the outside, but absorbs and / or reflects. Thus, the leakage of noise from the muffler device is prevented.
  • the sealing layer 56 and the absorption layer 54 can be dispensed with a separate seal, such as an O-ring.
  • a separate seal such as an O-ring.
  • the installation and production of the muffler device 10 are considerably simplified. It is understood that the absorption device 40 shown can also be used in the examples of FIGS. 1 to 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention concerne un dispositif assourdisseur (10) pour une conduite de fluide (12), comportant un ensemble de résonateurs (14), lequel comprend un premier tube résonateur (16) doté d'un premier espace résonateur réalisé pour l'atténuation λ/4 d'au moins une longueur d'onde du son, le premier tube résonateur (16) comportant une première direction longitudinale, deux parois d'extrémité (31, 33) opposées l'une à l'autre dans la première direction longitudinale et une première paroi latérale (23) s'étendant entre les parois d'extrémité, le premier espace résonateur étant réalisé entre la première paroi latérale (23) et les parois d'extrémité (31, 33) du premier tube résonateur (16). L'ensemble de résonateurs (14) comprend en outre un deuxième tube résonateur (18) doté d'un deuxième espace résonateur réalisé pour l'atténuation λ/4 d'au moins une longueur d'onde du son, le deuxième tube résonateur comportant une deuxième direction longitudinale, deux parois d'extrémité opposées l'une à l'autre dans la deuxième direction longitudinale et une deuxième paroi latérale (25) s'étendant entre les parois d'extrémité, le deuxième espace résonateur étant réalisé entre la deuxième paroi latérale (25) et les parois d'extrémité du deuxième tube résonateur (18). Le premier tube résonateur (16) et le deuxième tube résonateur (18) sont reliés l'un à l'autre de manière à conduire du son par l'intermédiaire d'une première ouverture de liaison (17) entre la première paroi latérale et la deuxième paroi latérale.
EP11776416.7A 2010-10-26 2011-10-26 Dispositif assourdisseur pour une conduite de fluide et appareil de chauffage muni d'un dispositif assourdisseur Withdrawn EP2633178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010049578A DE102010049578A1 (de) 2010-10-26 2010-10-26 Schalldämpfereinrichtung für eine Fluidleitung sowie Heizgerät mit einer Schalldämpfereinrichtung
PCT/EP2011/068724 WO2012055900A1 (fr) 2010-10-26 2011-10-26 Dispositif assourdisseur pour une conduite de fluide et appareil de chauffage muni d'un dispositif assourdisseur

Publications (1)

Publication Number Publication Date
EP2633178A1 true EP2633178A1 (fr) 2013-09-04

Family

ID=44897746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11776416.7A Withdrawn EP2633178A1 (fr) 2010-10-26 2011-10-26 Dispositif assourdisseur pour une conduite de fluide et appareil de chauffage muni d'un dispositif assourdisseur

Country Status (5)

Country Link
US (1) US8919491B2 (fr)
EP (1) EP2633178A1 (fr)
CN (1) CN103249941B (fr)
DE (1) DE102010049578A1 (fr)
WO (1) WO2012055900A1 (fr)

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DE102014202538A1 (de) 2014-02-12 2015-08-13 Volkswagen Aktiengesellschaft Ansauggeräuschdämpfer
CA3019194A1 (fr) 2016-03-30 2017-10-05 Marine Canada Acquisition Inc. Appareil de chauffage de vehicule et commandes associees
WO2018047153A1 (fr) * 2016-09-12 2018-03-15 Acoustic Metamaterials Group Limited Absorbeur de bruit en métamatériau acoustique
US10495113B2 (en) * 2017-02-14 2019-12-03 Garrett Transporation I Inc. Acoustic damper with resonator members arranged in-parallel
DE102017107599A1 (de) * 2017-04-10 2018-10-11 Gardner Denver Deutschland Gmbh Pulsations-Schalldämpfer für Kompressoren
DE102017108151B4 (de) * 2017-04-18 2023-03-02 Eberspächer Climate Control Systems GmbH Verbrennungsluftgebläse und Fahrzeugheizgerät mit einem derartigen Verbrennungsluftgebläse
DE102018216215A1 (de) * 2018-09-24 2020-03-26 Mahle International Gmbh Luftleitungsrohr und eine Klimaanlage für ein Fahrzeug
JP7436178B2 (ja) * 2019-10-23 2024-02-21 株式会社ブリヂストン 排水管構造
US20210231035A1 (en) * 2020-01-24 2021-07-29 K&N Engineering, Inc. Sound attenuating engine exhaust system
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Also Published As

Publication number Publication date
WO2012055900A1 (fr) 2012-05-03
CN103249941A (zh) 2013-08-14
US20130327584A1 (en) 2013-12-12
DE102010049578A1 (de) 2012-04-26
CN103249941B (zh) 2016-03-30
US8919491B2 (en) 2014-12-30

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