EP2834115A1 - Caisson d'aspiration à propriétés insonorisantes pour un système d'approvisionnement en air dans un ensemble compresseur - Google Patents

Caisson d'aspiration à propriétés insonorisantes pour un système d'approvisionnement en air dans un ensemble compresseur

Info

Publication number
EP2834115A1
EP2834115A1 EP13714642.9A EP13714642A EP2834115A1 EP 2834115 A1 EP2834115 A1 EP 2834115A1 EP 13714642 A EP13714642 A EP 13714642A EP 2834115 A1 EP2834115 A1 EP 2834115A1
Authority
EP
European Patent Office
Prior art keywords
air
intake
box
sound
schalldämmkasten
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Withdrawn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
EP13714642.9A
Other languages
German (de)
English (en)
Inventor
Matthias Fritz
Melanie Gibson
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 Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Schienenfahrzeuge 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 Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Publication of EP2834115A1 publication Critical patent/EP2834115A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps

Definitions

  • the present invention relates to a suction box of an air supply system in a compressor assembly, comprising an intake grille and a kompressorgei- term arranged air intake pipe, wherein the intake grille and the air intake pipe between a lower lid and an upper lid are arranged.
  • the field of application of the present invention extends to vehicle construction, in particular rail vehicle construction.
  • increasing demands for noise protection especially in rail vehicles, which drive in residential areas, require an ever greater effort to Schalloptimierung the compressor assembly.
  • In the field of passenger transport there are particularly high requirements with regard to the maximum permissible sound radiation.
  • encapsulated air supply systems are installed in rail vehicles, especially for the compressed air supply to the brake system.
  • These air supply systems are composed of compressor unit, frame and often air dryer or container.
  • the capsule protects the compressor against small parts stirred up by the airstream, weathering influences, also serves to reduce noise and can also be used to guide the cooling air sensibly.
  • the capsules are lined with insulating material, but this is not always possible or worthwhile due to the limited installation space and the guarantee of the function.
  • encapsulated air supply systems often still have various openings and holes for technical reasons, through which the sound can escape unhindered.
  • a sound-absorbing box for minimizing noise emissions is arranged between the intake grille and the air intake pipe, the length and width dimensions of the sound-absorbing box being at least three times as large as the depth dimension of the sound-absorbing box.
  • an air guide plate between the intake grille and the sound insulation box is arranged in such a way that an inflow region is created between the intake grille and the air guide plate, and a labyrinth forms between the air guide plate and the sound insulation box between the sound dämmkasten and a cover plate creates a relaxation area in which the air intake pipe is arranged.
  • the path length of the sound waves is extended through these areas of action, in addition to lower the sound level of the sound waves.
  • the air flows through the intake grille into the inflow area.
  • the intake grille is there to make it difficult to draw in foreign bodies directly, thus avoiding accumulation of larger foreign bodies inside the box.
  • the intake grid prevents the nesting of small animals.
  • the position of the suction box should be selected system-specifically as far away as possible from warm air outlets. Warm air leaks are those that have air temperatures above 60 ° C.
  • the inflow region is arranged, which is bounded by the air guide plate.
  • the air baffle protects the soundproofing box from direct moisture during cleaning or when it is raining; for another, the air baffle directs the intake air to the labyrinth.
  • the air enters the relaxation area by the air intake pipe of the compressor is arranged.
  • the noise emissions generated by the compressor go through the opposite route. They expand spherically in the relaxation area and pass through the sound absorbing box, reducing the sound level of the sound waves and thus reducing the noise emission.
  • the air baffle with the Schalldämmkasten a sound trap, wherein the distance x between the air baffle and Schalldämmkasten is smaller than the length y of the sound trap of the baffle.
  • the sound-absorbing effect can be enhanced by the arrangement of an insulating mat on the air baffle in the region of the length y in the labyrinth.
  • the sound-absorbing box has at least one air inlet opening, wherein the at least one air inlet opening has an area which has at least the size of a smallest cross-sectional area of the air intake pipe.
  • the at least one air inlet opening Through the at least one air inlet opening, both the air in the intake by the compressor, and the sound waves of the compressor is performed.
  • the at least one air inlet opening is preferably arranged in the upper section of the sound insulation box.
  • the size of the cross-sectional area of the at least one air inlet opening is made as small as possible to allow little noise to escape, but as large as necessary to suck in enough air. Therefore, the size of the at least one air inlet opening corresponds to the smallest cross-sectional area of the air intake pipe. If the air inlet opening is not sufficiently dimensioned, the flow resistance and the intake noise increase.
  • the soundproofing box has at least one insulating panel on the lower lid and on the upper lid, so that an air space is formed between the insulating panels, a cross-sectional area of the airspace being greater than the smallest cross-sectional area of the air intake tube.
  • the insulation panels are for example made of melamine foam, with an additional coating for protection against moisture or damage during assembly of flow or aluminum is conceivable.
  • a substitute for the lower lid may be the noise wall of the air supply system. Due to the minimum required size of the cross-sectional area and the available installation height, taking into account the thickness of the insulation board, the gap dimensions. The largest possible insulation board thickness, in order to achieve the best possible sound insulation properties, is approximately 20 mm.
  • the interior of the sound-absorbing box is completely or partially filled with sound-absorbing material and / or a sintered material.
  • the entire interior of the soundproofing box can be filled with an air-permeable sintered material, preferably sintered bronze, or any air-permeable fabric.
  • air-permeable fabrics may preferably be braids of polymers, in particular polyethylene and / or PTFE.
  • a combination of the sound absorbing materials for filtering different frequencies and lowering the amplitudes is particularly advantageous.
  • a path of the sound waves through the air space tangentially along the insulation boards at least twice as large as the distance between the two insulation boards. The longer the path of sound between the two insulation boards, the better the sound-absorbing effect. This is because the sound waves are more often reflected between the insulation boards, reducing the sound level of the sound waves at each reflection.
  • the invention includes the technical teaching that at least one standoff pin is arranged between the insulation boards to prevent contraction of the insulation boards caused by negative pressure or aging phenomena.
  • the standoffs are arranged to be the other one Support insulation board on opposite construction half.
  • the number and position of the spacer bolts is selected so that the smallest cross-sectional area of the intake pipe is at least the same size as the cross-sectional area of the air space between the insulating panels.
  • the cross-sectional area of the openings to be flowed through the intake grate is at least twice as large as the smallest cross-sectional area of the air intake pipe.
  • a twice as large area of the openings of the intake grille provides sufficient security that the compressor can suck in enough air.
  • the intake grille is set back by a distance z in the direction of the air intake pipe, whereby an antechamber is formed, wherein in the prechamber in front of the intake grille a slot-like gap is arranged to drain any moisture that has entered the prechamber enable. Resetting the intake grille provides additional protection against debris since they must be so small as to penetrate the pre-chamber before they are aspirated.
  • the advantage of efficient minimization of the noise emission of the solution according to the invention results, in particular, from the fact that sound waves originating from the air intake tube originate from the air box and the large-area arrangement of the insulation boards in the sound box reduces the sound level of the sound waves.
  • the task of the relaxation area in which the air intake pipe is arranged is to calm the sound waves originating from the compressor in order to then guide them into the sound insulation box.
  • Schalldämmkasten there is a decrease in the sound level of the sound waves due to the insulation boards, the Narrow Beereinlassöffhungen make it difficult to penetrate and leave the sound waves in the Schalldämmkasten, so that this also has a sound-absorbing effect.
  • the tangential edge of the insulation panels towards the relaxation area has at least the same length as the air inlet opening in the sound insulation box in order not to obstruct the air flow.
  • the construction of the suction box is made in two parts, wherein the intake grille, the air baffle, the end plate and the upper part of the Schalldämmkastens including the upper insulating plate are attached to the upper lid.
  • a two-part design makes it much easier to change the insulation boards and, due to the good handling properties, prevents damage to the insulation boards during installation.
  • FIG. 1 is a perspective view of an air supply system with a laterally arranged sound-absorbing intake box
  • FIG. 2 shows an enlarged perspective sectional view of the sound-absorbing suction box according to the invention from FIG. 1.
  • the suction box 1 shows an air supply system 2 on the side of the housing, a suction box 1 is arranged.
  • the length of the flat suction box 1 corresponds at least at least six times the depth of the suction box 1.
  • the height of the suction box 1 is dependent on the height of the air supply system 2. Nevertheless, the length of the suction box 1 is greater than the available height.
  • the upper cover 6 of the suction box 1 replaces the lateral lining of the air supply system 2.
  • the housing wall of the air supply system 2 closes the intake box 1 to the air supply system 2 out. Due to the flat design of the suction box 1, a minimal additional installation space is claimed.
  • the suction box 1 of the air supply system 2 from FIG. 1, which is shown in greater detail in FIG. 2, has four areas of action.
  • An antechamber A arranged in front of an intake grille 3 has a longhole-like gap 13 directly in front of the intake grate 3 in order to allow moisture escaping into the pre-chamber A to escape.
  • the prechamber A is formed by resetting the intake grille 3 by a distance z.
  • Behind the intake grille 3 an inflow region B separated from a labyrinth C by an air guide plate 7 is arranged.
  • Such an arrangement of the air baffle 7 extends the path from the prechamber A to a arranged in a relaxation area D Lucasansaugrohr 4.
  • a Schalldämmkasten 8 is formed by 6 insulating panels on a lower lid 5 and on an upper cover 11 are arranged.
  • the insulating panels 11 are supported by three spacer bolts 12, which are configured between the insulating panels 11 such that an air space is formed between the insulating panels 11, wherein a cross-sectional area of the air space is greater than a smallest cross-sectional area of the air intake 4.
  • the soundproofing box 8 has two air outlet openings 10 on a side wall, the air inlet openings 10 having an area which at least has the size of the smallest cross-sectional area of the air intake pipe 4.
  • the air baffle 7 forms with the sound absorbing box 8 a sound trap, wherein the distance x between the air baffle 7 and 8 Schalldämmkasten is smaller than the length y of the sound trap of the baffle. 7

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Duct Arrangements (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un caisson d'aspiration (1) d'un système d'approvisionnement en air (2) dans un ensemble compresseur, comprenant une grille d'aspiration (3) et un tube d'aspiration d'air (4) placé côté compresseur (4), la grille d'aspiration (3) et le tube d'aspiration d'air (4) étant placés entre un couvercle inférieur (5) et un couvercle supérieur (6), un caisson insonorisant (8) étant également placé entre la grille d'aspiration (3) et le tube d'aspiration d'air (4) pour réduire au minimum les émissions sonores, la longueur et la largeur du caisson insonorisant (8) équivalant au moins à trois fois la profondeur du caisson insonorisant (8).
EP13714642.9A 2012-04-05 2013-04-04 Caisson d'aspiration à propriétés insonorisantes pour un système d'approvisionnement en air dans un ensemble compresseur Withdrawn EP2834115A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012007027A DE102012007027A1 (de) 2012-04-05 2012-04-05 Ansaugkasten mit schalldämmenden Eigenschaften für eine Luftversorgungsanlage in einer Kompressoranordnung
PCT/EP2013/057130 WO2013150111A1 (fr) 2012-04-05 2013-04-04 Caisson d'aspiration à propriétés insonorisantes pour un système d'approvisionnement en air dans un ensemble compresseur

Publications (1)

Publication Number Publication Date
EP2834115A1 true EP2834115A1 (fr) 2015-02-11

Family

ID=48050022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13714642.9A Withdrawn EP2834115A1 (fr) 2012-04-05 2013-04-04 Caisson d'aspiration à propriétés insonorisantes pour un système d'approvisionnement en air dans un ensemble compresseur

Country Status (7)

Country Link
US (1) US9903390B2 (fr)
EP (1) EP2834115A1 (fr)
JP (1) JP6238957B2 (fr)
CN (1) CN104271417B (fr)
DE (1) DE102012007027A1 (fr)
RU (1) RU2631362C2 (fr)
WO (1) WO2013150111A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016100705A1 (de) 2016-01-18 2017-07-20 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Luftversorgungsanlage
CN107893743A (zh) * 2017-11-24 2018-04-10 中山市创艺生化工程有限公司 一种低噪隔音空压机
DE102020205335A1 (de) 2020-04-28 2021-10-28 Siemens Mobility GmbH Schienenfahrzeug mit Kompressor
CN113047119A (zh) * 2021-04-23 2021-06-29 四川鑫博大园林工程有限公司 一种公路降噪用施工装置及其施工方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58172004U (ja) * 1982-05-13 1983-11-17 トキコ株式会社 消音器
DE10205591A1 (de) * 2002-02-11 2003-08-21 Siemens Ag Belüftungsvorrichtung
DE10243034B4 (de) * 2002-09-17 2006-02-09 Ltg Aktiengesellschaft Lufttechnische Induktionsvorrichtung
DE202004011630U1 (de) 2004-07-24 2004-11-11 Wabco Gmbh & Co.Ohg Geräuschdämpfer für Drucklufteinrichtungen
US20070045042A1 (en) * 2005-08-25 2007-03-01 L&L Products, Inc. Sound reduction system with sound reduction chamber
DE102008029489A1 (de) 2008-06-20 2009-12-24 Wabco Gmbh Geräuschdämpfer für Druckluftsysteme von Fahrzeugen
US8555666B1 (en) * 2009-03-11 2013-10-15 Norman Enrique Pettus Single package, indoor air-sourced, basement heat pump for home heating and air conditioning
DE102011111625A1 (de) 2011-08-25 2013-02-28 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Schalldämpfungseinrichtung für eine Lufttrocknungsanlage eines Druckluftversorgungssystems

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013150111A1 *

Also Published As

Publication number Publication date
US20150063984A1 (en) 2015-03-05
JP2015512492A (ja) 2015-04-27
US9903390B2 (en) 2018-02-27
JP6238957B2 (ja) 2017-11-29
WO2013150111A1 (fr) 2013-10-10
CN104271417A (zh) 2015-01-07
CN104271417B (zh) 2016-08-17
RU2631362C2 (ru) 2017-09-21
RU2014144432A (ru) 2016-05-27
DE102012007027A1 (de) 2013-10-10

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