EP0542169A1 - Dispositif silencieux pour compresseur à vis - Google Patents

Dispositif silencieux pour compresseur à vis Download PDF

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Publication number
EP0542169A1
EP0542169A1 EP92119148A EP92119148A EP0542169A1 EP 0542169 A1 EP0542169 A1 EP 0542169A1 EP 92119148 A EP92119148 A EP 92119148A EP 92119148 A EP92119148 A EP 92119148A EP 0542169 A1 EP0542169 A1 EP 0542169A1
Authority
EP
European Patent Office
Prior art keywords
flow channel
compressor
expansion chamber
outlet
inlet
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.)
Granted
Application number
EP92119148A
Other languages
German (de)
English (en)
Other versions
EP0542169B1 (fr
Inventor
Peter Wilms
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0542169A1 publication Critical patent/EP0542169A1/fr
Application granted granted Critical
Publication of EP0542169B1 publication Critical patent/EP0542169B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01N13/002—Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • 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
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
    • 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
    • F04C29/066—Noise dampening volumes, e.g. muffler chambers with means to enclose the source of noise

Definitions

  • the invention relates to a muffler for a screw compressor or the like. With an inlet for the compressed air leaving the compressor, a subsequent flow channel and an outlet, and a method for sound absorption, in particular with such a muffler.
  • Screw compressors in particular, but also other turbomachines generally represent significant sources of noise.
  • a screw compressor used in silo vehicles operates at a frequency of 13,000 Hz, i.e. an air volume of, for example, 250 cm3 is conveyed intermittently 13,000 times per hour.
  • the resulting sound is in the upper limit of human hearing and is therefore particularly unpleasant.
  • Conventional silencers generally do not lead to satisfactory results, which leads to the fact that the compressors with their auxiliary and additional units are additionally housed in a soundproof enclosure.
  • the object of the invention is to provide a solution with which such sound sources are effectively attenuated can that they meet today's environmental requirements for noise.
  • this object is achieved according to the invention in that the flow channel between the inlet and outlet has at least one region of curvature and behind the region of curvature at least one expansion chamber.
  • the inlet is assigned a flow bend by 90 °, subsequently a straight flow channel region, a flow bend by 180 °, an adjoining straight flow channel and subsequently the expansion chamber.
  • expansion chambers are designed as extensions pointing into the interior of the housing on one side, as is also provided by the invention. With this design, a very compact design of the silencer can be achieved.
  • the invention also provides that at least areas of the flow channels are provided with internal insulation with perforated sheet lining, as is known per se with silencers.
  • the invention also provides in a further embodiment that the flow channels with bends and expansion chambers are accommodated in a common housing and are completely surrounded by an insulating material.
  • the invention also provides a method for soundproofing a screw compressor or the like, in particular with a previously described silencer, which is characterized in that it is generated by the escape of air from the compressor Sound waves are overlaid with equal frequency sound waves generated by reflection.
  • the reflection of the sound waves causes a superposition of the sound waves and thus interference, so that the sound is effectively dampened.
  • a kind of echo muffler is available, the sound is almost automatically dampened by the forced reflection.
  • the muffler according to the invention is preferably used for silo vehicles in which compressors with constant speed are used, the incoming sound waves have a constant frequency of e.g. 13,000 Hz, so that no constructive changes to the muffler itself have to be made to generate equal-frequency reflection sound waves.
  • the air emerging from the compressor is subjected to at least one main direction reversal, as a result of which additional sound damping is achieved.
  • a muffler is flanged to the outlet port 2 of a compressor, generally designated 1, not shown in detail.
  • the input of the silencer is labeled 4.
  • the flow channel designated 5 is partially straight, partially curved, with a 90 ° flow elbow 6 adjoining the inlet 4, as can be seen from FIG. 2.
  • the further areas of the flow channel shown are designated as follows: the 90 ° elbow 6 is followed by a straight flow channel area 7, a 180 ° elbow 8, a first straight channel area 9a, an inwardly directed first expansion chamber 10, a second straight flow channel area 9b, a 180 ° elbow 11, a first straight duct region 12a, a further expansion chamber 10a and a straight duct region 12b before the outlet designated 13.
  • the expansion chambers 10 and 10a are designed as flow channel extensions, which are each designed for the interior of the muffler 3, as can be seen in FIG. 1 results in a comparatively compact design.
  • the entire flow channel 5 is embedded in an unspecified housing in the insulation material 14. This can be, for example, heat-resistant foam plastic material, glass wool, steel wool or similar materials.
  • Dashed lines indicate that the inner surfaces of the flow channel 5 can be provided, at least in some areas, with internal insulation 15, supported by perforated plates 16, with flow baffles, e.g. Cone 17 can be provided, as indicated in Fig. 1.
  • the sound waves When the air passes through the flow channel, the sound waves are guided, in particular in the area of the expansion chambers 10 and 10a, in such a way that the sound waves are superimposed by sound waves generated by reflection, i.e. a kind of echo silencer or an anti-pulse silencer is available. Due to the interference of the sound waves, i.e. the input sound waves and the reflected sound waves, there is effective, almost complete sound absorption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Exhaust Silencers (AREA)
EP92119148A 1991-11-09 1992-11-09 Dispositif silencieux pour compresseur à vis Expired - Lifetime EP0542169B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9113962U 1991-11-09
DE9113962U DE9113962U1 (de) 1991-11-09 1991-11-09 Schalldämpfer für einen Schraubenverdichter

Publications (2)

Publication Number Publication Date
EP0542169A1 true EP0542169A1 (fr) 1993-05-19
EP0542169B1 EP0542169B1 (fr) 1996-01-10

Family

ID=6873109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92119148A Expired - Lifetime EP0542169B1 (fr) 1991-11-09 1992-11-09 Dispositif silencieux pour compresseur à vis

Country Status (3)

Country Link
EP (1) EP0542169B1 (fr)
AT (1) ATE132943T1 (fr)
DE (2) DE9113962U1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6158983A (en) * 1997-04-24 2000-12-12 Trw Inc. Pump having muffler for attenuating noise
WO2010091656A3 (fr) * 2009-02-16 2011-05-19 Man Diesel & Turbo Se Amortisseur de bruit pour une turbomachine ou machine à piston
EP2273120B1 (fr) * 2004-02-13 2012-09-12 TVE Schutzrechte GmbH Amortisseur de bruit de refoulement pour un appareil d'alimentation pour un véhicule automobile
US10808969B2 (en) 2015-08-11 2020-10-20 Carrier Corporation Screw compressor economizer plenum for pulsation reduction
US10830239B2 (en) 2015-08-11 2020-11-10 Carrier Corporation Refrigeration compressor fittings
US10941776B2 (en) 2015-10-02 2021-03-09 Carrier Corporation Screw compressor resonator arrays

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2858302B2 (ja) * 1995-10-09 1999-02-17 セイコー精機株式会社 気体圧縮機
EP1715189B1 (fr) 2005-04-22 2013-12-04 Kaeser Kompressoren AG Silencieux développé pour et destiné à un compresseur
EP1857682B1 (fr) * 2006-05-18 2016-05-04 Aerzener Maschinenfabrik GmbH Machine à pistons rotatifs avec dispositif silencieux
CN102011629A (zh) * 2010-12-31 2011-04-13 广东联塑机器制造有限公司 排气消音装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125182A (en) * 1964-03-17 earley
US3180449A (en) * 1963-01-28 1965-04-27 Ingersoll Rand Co Noise abatement snubber for vacuum pump system
DE1576941A1 (de) * 1967-08-11 1973-05-30 Schmalkalden Werkzeug Geraeuschgedaempfte druckluftmaschine
US4264282A (en) * 1979-01-03 1981-04-28 K. C. Mosier Company Air compressor apparatus including noise-reducing means
GB2161217A (en) * 1984-07-03 1986-01-08 Radmark Engineering Systems Li Air blowing unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8024363U1 (de) * 1980-09-12 1980-12-11 M.A.N. Maschinenfabrik Augsburg- Nuernberg Ag, 8900 Augsburg Schalldaempfer fuer verdichteranlagen, insbesondere schraubenverdichter
DE3039334C2 (de) * 1980-10-17 1985-07-04 Gebrüder Bühler AG, Uzwil Drucklufterzeugervorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125182A (en) * 1964-03-17 earley
US3180449A (en) * 1963-01-28 1965-04-27 Ingersoll Rand Co Noise abatement snubber for vacuum pump system
DE1576941A1 (de) * 1967-08-11 1973-05-30 Schmalkalden Werkzeug Geraeuschgedaempfte druckluftmaschine
US4264282A (en) * 1979-01-03 1981-04-28 K. C. Mosier Company Air compressor apparatus including noise-reducing means
GB2161217A (en) * 1984-07-03 1986-01-08 Radmark Engineering Systems Li Air blowing unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6158983A (en) * 1997-04-24 2000-12-12 Trw Inc. Pump having muffler for attenuating noise
EP1004772A3 (fr) * 1998-11-23 2002-07-17 Trw Inc. Pompe à silencieux
EP2273120B1 (fr) * 2004-02-13 2012-09-12 TVE Schutzrechte GmbH Amortisseur de bruit de refoulement pour un appareil d'alimentation pour un véhicule automobile
WO2010091656A3 (fr) * 2009-02-16 2011-05-19 Man Diesel & Turbo Se Amortisseur de bruit pour une turbomachine ou machine à piston
US10808969B2 (en) 2015-08-11 2020-10-20 Carrier Corporation Screw compressor economizer plenum for pulsation reduction
US10830239B2 (en) 2015-08-11 2020-11-10 Carrier Corporation Refrigeration compressor fittings
US10941776B2 (en) 2015-10-02 2021-03-09 Carrier Corporation Screw compressor resonator arrays

Also Published As

Publication number Publication date
DE9113962U1 (de) 1992-02-27
ATE132943T1 (de) 1996-01-15
DE59205006D1 (de) 1996-02-22
EP0542169B1 (fr) 1996-01-10

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