EP0037559B1 - Compresseur - Google Patents

Compresseur Download PDF

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Publication number
EP0037559B1
EP0037559B1 EP81102456A EP81102456A EP0037559B1 EP 0037559 B1 EP0037559 B1 EP 0037559B1 EP 81102456 A EP81102456 A EP 81102456A EP 81102456 A EP81102456 A EP 81102456A EP 0037559 B1 EP0037559 B1 EP 0037559B1
Authority
EP
European Patent Office
Prior art keywords
compressor
sound
housing
air filter
lining
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.)
Expired
Application number
EP81102456A
Other languages
German (de)
English (en)
Other versions
EP0037559A1 (fr
Inventor
Rudolf Hofmann
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.)
ISARTALER SCHRAUBENKOMPRESSOREN GmbH
Original Assignee
ISARTALER SCHRAUBENKOMPRESSOREN 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 ISARTALER SCHRAUBENKOMPRESSOREN GmbH filed Critical ISARTALER SCHRAUBENKOMPRESSOREN GmbH
Publication of EP0037559A1 publication Critical patent/EP0037559A1/fr
Application granted granted Critical
Publication of EP0037559B1 publication Critical patent/EP0037559B1/fr
Expired legal-status Critical Current

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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
    • F04C29/066—Noise dampening volumes, e.g. muffler chambers with means to enclose the source of noise

Definitions

  • the invention relates to a compressor according to the preamble of claim 1.
  • a compressor of this type is known from DE-A-2 733 902.
  • the sound-absorbing lining provided in the air intake duct has an irregular shape of the exposed surface of the lining, which is likely to result from spraying the air intake duct with sound-absorbing material.
  • the air filter required for a compressor is placed on the compressor housing in front of the air intake duct.
  • the air intake duct with lining is used as an inlet silencer.
  • the invention has for its object to design a compressor of the type specified in such a way that, despite greater compactness, the noise emission is further reduced.
  • the sound-absorbing material arranged at a distance along the circumference of the air filter results in a considerable damping of the sound waves penetrating from the interior of the compressor, which hit the sound-absorbing material as it exits the air filter.
  • a different wall thickness of the sound absorbing lining is provided, which is achieved by different radial distances between the walls of the air intake duct surrounding the air filter.
  • vibrations Another source of sound are the vibrations, which are directly implemented as structure-borne sound by the compressor housing.
  • the compressor housing is preferably coated on the outside with a sound-insulating material that dampens this structure-borne noise.
  • the sound-insulating material attached to the outside of the compressor housing is expediently designed in the form of shells, the inner contour of which corresponds to the outer contour of the compressor housing and which are removably placed on the compressor housing.
  • These fitted trays can have any external contour and can be manufactured inexpensively from styrofoam, for example, similar to packaging parts. In this case too, different frequencies of the structure-borne noise of the compressor can be damped by different wall thicknesses of these shells.
  • FIG. 1 and 2 show a screw compressor, the housing of which consists of four disk-shaped components 1a to 1d in the illustrated embodiment.
  • the longitudinal dimension of the component 1b of the compressor housing is determined by the rotors 2 of the screw compressor, the rotor bearings being arranged in the components 1a and 1c.
  • a space for the oil supply of the screw compressor which usually works with oil injection, is formed in the components 1a to 1c.
  • 4 shows a thermostatic valve which, depending on the temperature of the oil supply, releases or closes the connection to an oil cooler 5.
  • the gear is designated, via which the screw compressor is driven by a drive motor 7.
  • an air intake control valve is designated, which is arranged coaxially to an air filter cartridge 9, which is arranged in a housing recess 10, which extends over the disc-shaped components 1b and 1c and to form a suction opening 11 up to the lid-shaped housing part 1d.
  • a corresponding recess 17 is formed which extends over the housing components 1b and 1c and in which an oil separator cartridge 18 is arranged.
  • a pressure line is shown which communicates with the oil separation space.
  • 20 is an oil filter in FIG. 2.
  • the ring-shaped air filter cartridge 9 is closed on the end face by a cover plate 12 against the air flowing in the direction of the arrow, while the peripheral surface of the air filter cartridge 9 serves as a suction surface.
  • the recess 10 of the compressor housing 1, in which the air filter cartridge 9 is arranged has a different cross-sectional shape than the circumference of the air filter cartridge, as shown in FIG.
  • This recess 10 is lined with a preferably open-pore foam material 13, which leaves a relatively narrow annular gap 14 along the circumference of the air filter cartridge 9, through which the air flows in.
  • the sound waves penetrating outwards from the rotors 2 via the space 15 into the recess 10 and through the air filter cartridge 9 are reduced by the sound-absorbing lining 13 in such a way that there is a substantial reduction in the overall noise level of the compressor.
  • Fig. 2 different thickness dimensions of the sound absorbing material 13, an absorption of different frequencies of the sound emerging from the interior of the compressor waves.
  • the outside of the housing is provided with a sound-insulating coating for further sound absorption.
  • This coating for example a foam or a corrosion-inhibiting material at the same time, can be sprayed onto the housing, and locations which must remain accessible, such as the air intake opening, screws and the like, can be covered. In the event of the compressor being dismantled, this coating can be destroyed at least in places and applied again after assembly.
  • a compact, sound-insulating material in the form of a shell is applied to the outside of the compressor housing, it being possible, for example, to provide two shells, one shell for the upper half and the other for the lower half of the housing or two side-mounted shells, of which one is shown at 16 in Fig. 2.
  • These shells 16 have an inner contour corresponding to the outer contour of the compressor housing, while the outer shape can be arbitrary, for example, as shown, rectangular.
  • These trays 16 can be made from a foam similar to packaging parts. Due to their elasticity and fit, they can easily be attached to the compressor housing without the need for additional fasteners. Apart from the suction opening, these shells can cover the entire compressor housing, since they can simply be removed if the compressor is to be dismantled.
  • the measures for sound absorption can also be used in a compressor of conventional design.
  • a compressor of conventional design it is possible to provide the housing of a conventional screw compressor, which essentially only surrounds the rotors, also with a sound-insulating coating or with appropriate shells, as well as with a conventional air filter for soundproofing, a sound-absorbing material is arranged on the outer circumference of the air filter cartridge can.
  • the different wall thickness of the lining 13 made of sound-absorbing material is particularly effective when annular sections of the lining 13, which have different wall thicknesses, are arranged one behind the other in the axial direction of the air filter cartridge 9.
  • Such rings with different wall thicknesses can be used as prefabricated parts in the housing recess 10, as can the one-piece lining 13 can be used as a prefabricated component. Training in the form of individual shells is also possible.
  • the lining 13 in the form of individual rings which can be designed with the same cross-sectional shape or with different wall thicknesses, different materials can also be provided for individual rings, for example a fine-pored and a large-pored, a heavier and a lighter foam.
  • the lining 13 is formed from open-pore foam, when the foam is foamed on the outer surfaces, there is a closed skin which acts as a dividing line between the individual adjacent annular sections.
  • the surface of the foam lining 13 is preferably formed without the skin closing the pores, for example by cutting the lining 13 along the inner circumference.
  • the annular space 14 remaining between the sound-absorbing lining 13 and the outer circumference of the air filter cartridge 9 is designed to be as narrow as possible. If necessary, an annular gap 14 tapering from the suction opening 11 to the inner end can also be provided, the narrow inner region of which has a highly sound-absorbing effect, while the further outer region serves to provide the cross section required for the air to be sucked in.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)

Claims (5)

1. Compresseur avec un canal d'aspiration d'air pourvu d'un revêtement acoustiquement absorbant (13) d'épaisseur de paroi différente, caractérisé en ce que le revêtement acoustiquement absorbant (13) entoure à distance un filtre à air (9).
2. Compresseur selon la revendication 1, caractérisé en ce que pour constituer le revêtement acoustiquement absorbant une mousse à porosité ouverte est prévue.
3. Compresseur, notamment compresseur hélicoïdal, selon l'une des précédentes revendications, caractérisé en ce que le carter du compresseur est recouvert sur sa face externe d'un matériau acoustiquement isolant.
4. Compresseur selon la revendication 3, caractérisé en ce que le matériau acoustiquement isolant appliqué sur la face extérieure du carter du compresseur est conformé selon des coquilles (16) dont le contour intérieur correspond au contour extérieur du carter du compresseur et qui sont montées sur le carter du compresseur de façon amovible.
5. Compresseur selon la revendication 4, caractérisé en ce que les coquilles en matériau acoustiquement isolant (16) présentent un contour extérieur différent de leur contour intérieur.
EP81102456A 1980-04-02 1981-04-01 Compresseur Expired EP0037559B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803012970 DE3012970A1 (de) 1980-04-02 1980-04-02 Verdichter, insbesondere schraubenverdichter
DE3012970 1980-04-02

Publications (2)

Publication Number Publication Date
EP0037559A1 EP0037559A1 (fr) 1981-10-14
EP0037559B1 true EP0037559B1 (fr) 1984-03-21

Family

ID=6099185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102456A Expired EP0037559B1 (fr) 1980-04-02 1981-04-01 Compresseur

Country Status (2)

Country Link
EP (1) EP0037559B1 (fr)
DE (2) DE3012970A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175653A (en) * 1985-05-23 1986-12-03 Song Wu An air cooling and reciprocating type of air compressor without lubricant
BE1009815A5 (nl) * 1995-11-16 1997-08-05 Atlas Copco Airpower Nv Pulsatiedemper of akoestisch uitlaatstuk voor een kompressor en kompressor hiermee uitgerust.
DE29904410U1 (de) * 1999-03-10 2000-07-20 Ghh Rand Schraubenkompressoren Schraubenkompressor
AU2002227505A1 (en) * 2000-07-28 2002-02-13 Visteon Global Technologies, Inc. An air intake arrangement for an internal combustion engine
BRPI0419079A (pt) * 2004-10-20 2007-12-18 Carrier Corp compressor, elemento de silencioso, método para remanufaturar compressor ou reprojetar configuração do compressor, elemento de silencioso de compressor, silencioso de compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR636382A (fr) * 1928-04-07
US4174196A (en) * 1976-07-28 1979-11-13 Hitachi, Ltd. Screw fluid machine

Also Published As

Publication number Publication date
DE3012970A1 (de) 1981-10-08
DE3162737D1 (en) 1984-04-26
EP0037559A1 (fr) 1981-10-14

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