WO2015018530A2 - Silencieux réducteur de bruit pour système de conditionnement d'air - Google Patents

Silencieux réducteur de bruit pour système de conditionnement d'air Download PDF

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Publication number
WO2015018530A2
WO2015018530A2 PCT/EP2014/002186 EP2014002186W WO2015018530A2 WO 2015018530 A2 WO2015018530 A2 WO 2015018530A2 EP 2014002186 W EP2014002186 W EP 2014002186W WO 2015018530 A2 WO2015018530 A2 WO 2015018530A2
Authority
WO
WIPO (PCT)
Prior art keywords
cup
compressed air
noise
shaped
silencer according
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.)
Ceased
Application number
PCT/EP2014/002186
Other languages
German (de)
English (en)
Other versions
WO2015018530A3 (fr
Inventor
Andreas Ochsenkühn
Rainer Eidenschink
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of WO2015018530A2 publication Critical patent/WO2015018530A2/fr
Publication of WO2015018530A3 publication Critical patent/WO2015018530A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/002—Air treatment devices
    • B60T17/008—Silencer devices
    • 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

Definitions

  • the invention relates to a silencer for damping the outflow noise of compressed air from an air treatment plant, comprising a front opening on a cup-shaped housing inlet opening for inflowing the compressed air, which accommodated in a relaxation space of the housing noise damping means
  • the field of application of the invention extends primarily to commercial vehicle construction.
  • the compressed air system includes a compressor for
  • Outflow noise of compressed air from compressed air devices of particular vehicles forth which has an inlet opening, at least one outlet opening and a cup-shaped housing arranged between these openings.
  • the cup-shaped housing serving for noise reduction absorption material is housed in the form of a filter fabric and an adjacent layer of a fibrous material. Since the first vent of compressed air of the air treatment plant with very high
  • the object is based on a silencer according to the preamble of
  • the noise damping means comprise a cup-shaped inlet region arranged at the inlet opening with an impeller base arched in the outward flow-optimized manner, which is provided with at least one central passage in the crown region to direct a small portion of the incoming compressed air directly into to lead the relaxation room.
  • the noise level component caused by venting shocks via the airborne noise is reduced. Because the compressed air does not encounter a flat obstacle, but can reach a part already through the arranged in the apex area of the curved baffle central opening in the relaxation room. However, most of the compressed air passes through a plurality of arranged in the wall portion of the cup-shaped inlet portion edge passages, which cause a radial outflow of compressed air into the relaxation space.
  • the pot-shaped inlet region therefore projects at least partially into the cylindrical expansion space.
  • the convex bottom of the pot-shaped inlet region which is arched outwards, has a convex or conical shape with correspondingly curved wall sections or rectilinearly extending toward the raised central passage. Due to the curved baffle floor also the flow deflection the compressed air in the direction of the edge passages fluidly optimized, so that at the same time a more efficient use of the absorbent material is ensured. Because the compressed air flows next to the central passage in the arched impact floor mainly through the edge passages in the relaxation space filled with absorption material.
  • Relaxation space is such that no temporal venting problems arise, which would cause a poor regeneration behavior of the air treatment plant, but at the same time so dimensioned that sets a pressure drop, so that the compressed air flow reduces its potential already in the cup-shaped inlet region of the muffler and relaxed in enters the relaxation room.
  • all passages are preferably also run without sharp edges and the size and number is to be dimensioned so that even larger dirt particles lead to no clogging of the passages.
  • edge passages distributed asymmetrically along the circumference of the cup-shaped
  • Inlet area are arranged. As a result, resonances are avoided, which would cause an increase in the noise level.
  • the relaxation space in the axial region between the bottom of the cup-shaped inlet portion and an opposite, at least one
  • the absorption material preferably has an axially directed chamber structure, so that it can be flowed through in the axial direction of the compressed air. This is the area in the Absorption material, which is located directly under the arched and provided with the central passage impact floor, optimally used, since this is already flowed through by a small partial air flow.
  • the cup-shaped housing
  • Main housing part on what the bottom side and coaxial thereto, the cup-shaped inlet portion is integrally formed.
  • the main housing part can be made in this respect of an injection molded part made of plastic.
  • the opening of the cup-shaped housing can then be closed with the flat bottom plate by a simple clip connection is made to the edge region of the housing.
  • the flat bottom disc is equipped with several outlet openings for the discharge of sound-damped compressed air to the atmosphere.
  • FIGS. 1 shows a longitudinal section through a silencer in the assembled state
  • Figure 2 is a plan view of the muffler according to Figure 1 in cup-shaped
  • the silencer for damping the outflow noise of compressed air from an air treatment plant comprises a total of three components, namely a cup-shaped housing 1, a flat bottom disk 2 and absorption material 3 the absorption material 3 is inserted into the cup-shaped housing 1, which is then closed with the flat bottom plate 2 via a clip connection.
  • an inlet opening 4 is arranged for the flow of compressed air from the air treatment plant. Subsequently, the thus supplied compressed air flows through a relaxation space 5 of the ' housing 1 containing the absorption material 3 for noise damping and leaves the housing 1 via several in the
  • the cup-shaped inlet region 7 having the inlet opening 4 for its part projects in part into the cylindrical expansion space 5 on the bottom side.
  • the pot-shaped inlet region 7 has a baffle 8 which is curved in the outward direction and which is small in the vertex region of the bump with at least one central passage 9
  • Diameter is provided so that a small portion of the incoming compressed air is passed directly straight into the expansion chamber 5 and the absorption material 3 contained therein.
  • the absorption material 3 has an axially directed chamber structure, so that the compressed air starting from the inlet opening 4 in a straight line through the
  • Absorbent material 3 can flow to the outlet openings 6 therethrough.
  • the other, larger part of the incoming compressed air passes through a plurality of arranged in the region of the bottom of the cup-shaped inlet portion 7 edge passages 10 in the
  • the expansion chamber 5 is filled with the absorbent material 3 only in the axial region between the bottom of the cup-shaped inlet region 7 and the opposite outlet openings 6 having flat bottom disk 2.
  • the cup-shaped inlet region 7 has the convexly curved convex bottom 8, which in the middle has the central passage 9 to the expansion chamber 5 (not shown).
  • the edge passages 10 (exemplified) arranged on the inner edge of the cup-shaped inlet region 7 are distributed asymmetrically along the circumference of the cup-shaped inlet region 7.
  • the upper edge of the cup-shaped inlet portion 7 is provided with a clamping ring 1 1 comprehensive clip connection means to attach the housing 1 to the not shown - air treatment plant.
  • Absorption material 3 is also another suitable absorption material 3 for at least partially filling the expansion chamber 5 is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Duct Arrangements (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention concerne un silencieux destiné à amortir le bruit d'échappement de l'air comprimé provenant d'un système de conditionnement d'air, comprenant un orifice d'entrée (4) disposée du côté frontal sur un boîtier (1) en forme de pot et servant à l'arrivée d'air comprimé, lequel s'échappe dans l'atmosphère par au moins un orifice de sortie (6) avec amortissement du bruit par le biais de moyens d'amortissement du bruit logés dans un espace de détente (5) du boîtier (1). Les moyens d'amortissement du bruit possèdent une zone d'entrée (7) en forme de pot disposée au niveau de l'orifice d'entrée (4) munie d'un fond en chicane, bombé en direction de l'extérieur avec optimisation de l'écoulement, qui est doté dans la zone du sommet du bombement d'au moins un passage central (9) servant à guider une faible partie de l'air comprimé entrant directement dans l'espace de détente (5).
PCT/EP2014/002186 2013-08-09 2014-08-08 Silencieux réducteur de bruit pour système de conditionnement d'air Ceased WO2015018530A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013013281.9 2013-08-09
DE102013013281.9A DE102013013281A1 (de) 2013-08-09 2013-08-09 Geräuschreduzierter Schalldämpfer für eine Luftaufbereitungsanlage

Publications (2)

Publication Number Publication Date
WO2015018530A2 true WO2015018530A2 (fr) 2015-02-12
WO2015018530A3 WO2015018530A3 (fr) 2015-07-30

Family

ID=51300697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/002186 Ceased WO2015018530A2 (fr) 2013-08-09 2014-08-08 Silencieux réducteur de bruit pour système de conditionnement d'air

Country Status (2)

Country Link
DE (1) DE102013013281A1 (fr)
WO (1) WO2015018530A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113227624A (zh) * 2019-01-23 2021-08-06 采埃孚商用车系统汉诺威有限公司 例如用于车辆的压缩空气机组中的电磁阀上的排气帽

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015111515A1 (de) * 2015-07-16 2017-01-19 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Schalldämpfungssystem
DE102017122215A1 (de) 2017-09-26 2019-03-28 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Geräuschdämpfer für Druckluftsysteme und ein Verfahren zu dessen Herstellung
EP4603348A1 (fr) * 2024-02-19 2025-08-20 Volvo Truck Corporation Orifice d'échappement pour une soupape pneumatique ou une soupape d'air d'un véhicule

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3015383A1 (de) * 1979-08-16 1981-10-29 Robert Bosch Gmbh, 7000 Stuttgart Schalldaempfer
DE3901335A1 (de) 1989-01-18 1990-07-19 Knorr Bremse Ag Schalldaempfer
DE4040278A1 (de) * 1990-12-17 1992-06-25 Bosch Gmbh Robert Druckluftventil
DE4237630A1 (de) * 1992-11-05 1994-05-11 Wabco Westinghouse Fahrzeug Druckluft-Entlüftungseinrichtung
DE202007006627U1 (de) 2007-05-09 2007-07-19 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Schalldämpfer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113227624A (zh) * 2019-01-23 2021-08-06 采埃孚商用车系统汉诺威有限公司 例如用于车辆的压缩空气机组中的电磁阀上的排气帽

Also Published As

Publication number Publication date
DE102013013281A1 (de) 2015-02-12
WO2015018530A3 (fr) 2015-07-30

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