EP1163451B1 - Compresseur a vis - Google Patents

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Publication number
EP1163451B1
EP1163451B1 EP00916927A EP00916927A EP1163451B1 EP 1163451 B1 EP1163451 B1 EP 1163451B1 EP 00916927 A EP00916927 A EP 00916927A EP 00916927 A EP00916927 A EP 00916927A EP 1163451 B1 EP1163451 B1 EP 1163451B1
Authority
EP
European Patent Office
Prior art keywords
housing
rotors
shaft journal
rotor
rotor housing
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 - Lifetime
Application number
EP00916927A
Other languages
German (de)
English (en)
Other versions
EP1163451A1 (fr
Inventor
Carsten Achtelik
Karl-Heinz Gilfert
Arno Heinz
Walter MÜRMANN
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.)
GHH Rand Schraubenkompressoren GmbH
Original Assignee
GHH Rand 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 GHH Rand Schraubenkompressoren GmbH filed Critical GHH Rand Schraubenkompressoren GmbH
Publication of EP1163451A1 publication Critical patent/EP1163451A1/fr
Application granted granted Critical
Publication of EP1163451B1 publication Critical patent/EP1163451B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/02—Arrangements of bearings
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • 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
    • 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
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing

Definitions

  • the invention relates to a screw compressor in the Preamble of claim 1 mentioned type.
  • the invention is preferred, but not exclusively applicable to a screw compressor for generating a compressed air flow for the pneumatic transport of bulk goods, and especially one for attachment to one Silo vehicle trained screw processor.
  • Screw compressors work on the displacement principle Air compressors compared to other types of compressors have beneficial properties they especially for the pneumatic transport of bulk goods make suitable. This applies in particular to so-called dry running screw compressors, where the by a synchronous gear synchronized screw rotors no contact with each other and with the surrounding housing parts to have. There is therefore no lubrication in the compression chamber required so that they are kept oil-free can and therefore any contamination of the compressed air with oil is avoided. Due to the contact-free running of the rotors there is no wear in this area either the lifespan is reduced and there is no abrasion the contaminated air can contaminate.
  • screw compressors are due to their operating characteristics especially suitable for realizing high pressure ratios and are insensitive to short-term pressure increases, caused by the blockage of the compressed air Pipeline could be caused. Finally have they lighter weight and small size, what makes them special for mobile use e.g. B. suitable for silo vehicles makes.
  • GB-A-2 299 622 discloses a screw compressor according to the preamble Claim 1.
  • this screw compressor can be oil lubricated at the suction end of the rotor housing to be dispensed with.
  • the suction side Shaft journal of the rotors and their bearing arrangement surrounding Area of the suction-side housing cover directly for the inflow of air into the compressor room can be used.
  • a suction filter and / or Intake silencer is not available, however.
  • the invention has for its object by an improved Construction of the screw compressor in the area a simplified of the suction end of the compressor housing and improved air intake with filtering and / or sound absorption and a compact design of the compressor.
  • the intake filter and / or the intake housing containing the intake silencer directly attached to the suction end of the compressor housing resulting in a compact, space-saving and particularly robust construction for mobile use.
  • the housing of the compressor shown in Figs. 1-4 is composed of the following main parts: one Gear housing 1, a rotor housing 3, an inflow housing 4, a suction housing 5 and an oil tank 7.
  • the rotor housing 3 are two rotors, namely a main rotor 9 (profile teeth) and a secondary runner 11 (profile gaps) rotatably mounted with their helical teeth and interlock tooth gaps while sealing Form chambers, which are in the rotation of the rotor Move and reduce the axial direction and thereby the suctioned Compress air.
  • the rotors so driven that the right end in Figs. 1-3 Suction side is.
  • air gets through at the front of the Rotor housing 3 provided intake openings 13 sucked.
  • the air is from the interlocking teeth and tooth gaps of the rotor pair is conveyed to the left in the axial direction and occurs as compressed air at the pressure end the rotors at an upward pressure outlet 15 out.
  • the principle of operation of a screw compressor is known and will not be explained here.
  • the gear housing 1 has the shape of a disk-like Stand. In it, the drive shaft 17 is in bearings 16, 18 of the compressor, whose from the housing cover 49th protruding shaft journal 17a to a not shown Rotary drive is connected.
  • the gearbox 1 also contains a drive gear consisting of a on the drive shaft 17 fixed gear 19 and a fastened on the shaft journal 23 of the secondary rotor 11 Gear 21 through which the rotation of the drive shaft 17th with a suitable gear ratio to the secondary runner 11 is transmitted. Furthermore, in the gear housing 1, d. H.
  • the overall stator or disc-shaped gear housing 1 has on both sides at its lower base cantilevered mounting feet 31 with holes 33 for Fastening screws that secure the entire compressor a suitable pad, e.g. B. a vehicle attached can be.
  • the rotor housing 3 on the gear housing 1 by means of a flange connection 37 attached so that it projects freely from the gear housing 1.
  • the oil container 7, which has a flat box shape, is also attached to the gear housing 1 so that it is free of this cantilevered, approximately parallel to the rotor housing 3 and below it.
  • the side walls of the oil container 7 are provided with cooling fins 39.
  • Between the oil tank 7 and the bottom of the rotor housing 3 is a relatively wide air gap 41.
  • an oil pump 45 For the circulation of the oil inside the gearbox 1, or for generating an oil mist, an oil pump 45 is used, which surrounds and is driven by the drive shaft 17 becomes.
  • the housing of the oil pump 45 has a protruding outward Flange 47, which is used to center the gearbox housing 1 attached housing cover 49 is used.
  • the oil pump 45 is with 4 screws 51 (Fig. 3) and associated threaded holes attached to the gear housing 1.
  • Inlet openings that close the rotor housing 3 on the suction side 13 inflow housing 4 is at a distance surrounded by a large-volume intake housing 5 (in Fig. 2 and Fig. 3 only indicated by dash-dotted lines), the means Screws attached to a flange 67 of the rotor housing 3 is.
  • Intake housing 5 is an intake filter for filtering the intake air and / or a damper for sound absorption.
  • a filter 6 made of a suitable porous or air-permeable filter material.
  • the filter lies in an air flow path between an outer suction slot 69 and one arranged in an inner partition 71 Passage slot 73, with suction slot 69 and passage slot are offset from each other so that a longest possible flow path for the air between the Slits 69, 73 is formed by the filter 6.
  • the intake housing 5 is a modified embodiment of the intake housing 5, in which the through the suction slot 69 sucked in and through the deflection wall 71 Passage slot 73 redirects air e.g. from suitable Flows through perforated plates trained muffler 75, before it gets into the space surrounding the housing cover 69 and through the inflow openings 13 into the interior of the rotor housing 3 flows. It is also possible to use the intake housing 5 so that it is both a filter and also contains a silencer.
  • An advantage of the direct attachment of a filter and / or a silencer-containing suction housing 5 on the rotor housing 3 such that it is the inflow housing 4 at a distance surrounds is that a separate arrangement of a Filters and / or silencers, and a connecting line between this and the suction side of the compressor can. This makes it particularly simple, compact and robust arrangement achieved.
  • Another advantage is there in that the air sucked into the suction housing 5 Outside of the inflow housing containing the shaft journal bearings 4 flows around and cools before passing through the Inflow openings 13 into the interior of the rotor housing 3 entry. This ensures effective cooling of the suction side Rotor bearing achieved.
  • Fig. 6 shows the storage in an enlarged sectional view and sealing the shaft journal 55 of the rotor 9 in the inflow housing 4.
  • the shaft journal 57 of the other rotor 11 is mounted and sealed in an analogous manner.
  • the shaft journals provided with tool engagement (flats 63) 57 is formed in the manner of a hub Middle part of the inflow housing 4 by means of a roller bearing 53 stored between a shoulder of the shaft journal 57 and one engaging in an annular groove of the shaft journal Circlip 83 is arranged. Because on the suction side the rotors 9, 11, as stated above, no oil lubrication Rolling bearing 53 is preferably to take place as an encapsulated bearing with a lifetime grease filling trained so that there is no subsequent lubrication needed.
  • the race 85 which e.g. a commercial one
  • the race for a rolling bearing can be made of steel specially hardened peripheral surface.
  • Lip seal ring 87 is between this and an inner shoulder 4a of the inflow housing 4, a protective ring 89 is arranged, the inner periphery of the outer surface of the race 85 with a very small gap, but faces without contact.
  • the protective ring 89 and the lip seal ring 87 are on each other and on the inner shoulder 4a of the inflow housing 4 attached in the bore of the housing, preferably glued.
  • the function of the guard ring 89 is as follows:
  • the compressor generated during operation by sucking in air on the Suction side and blowing out compressed air at the pressure port 15 a compressed air flow, e.g. for pneumatic transport of dusty goods can serve.
  • a compressed air flow e.g. for pneumatic transport of dusty goods
  • the guard ring protects 89 the lip seal 87 in front of that dust particles underneath the sealing lips of the lip seal ring 87 and impair the sealing effect.
  • suction-side bearing arrangement has the further advantage that it can be withdrawn from the shaft journal 57 without the rotor 9 or 11 removed or the precise setting the rotors must be changed to each other.
  • the Remove the bearing and seal assembly from the journal can be done in the following ways:
  • FIG. 7 shows in a sectional view corresponding to FIG. 3, but on a larger scale the storage and sealing of the pressure side shaft journal 29, 23 of the rotors 9, 11 am pressure-side end of the rotor housing 3.
  • the one for the shaft journal 23 the rotor 11 is completely analog.
  • the shaft journal 29 is in the pressure-side end wall of the Rotor housing 3 by two roller bearings arranged side by side 91, 93 stored, the so-called angular contact ball bearings are trained.
  • Angular contact ball bearings that are commercially available are ball bearings, the balls of which are from the outside and inner race only on one or the other side of the radial central plane are encompassed.
  • the two angular contact ball bearings 91, 93 are arranged side by side in mirror symmetry. Such an arrangement of angular contact ball bearings has the Property that it is completely free of play in the axial direction.
  • a shaft nut 95 arranged on the shaft journal 29 puts the angular contact ball bearings 91, 93 in the axial direction on the Shafts journal 29 firmly.
  • the outer race of the Angular contact ball bearing 93 lies against an inner shoulder 97 of the Rotor housing 3 on.
  • This race 101 is made just like the one previously described 6, made of steel with a special hardened peripheral surface. On the surface of the race 101 lie against the sealing lips of a lip sealing ring 103, which the compression space of the rotor housing 3 against the oil-loaded Seals gearbox and bearing area.
  • the hardened and extremely precisely machined, e.g. polished Outer surface of the race 25 results in a particularly wear-reducing Contact surface for the sealing lips of the lips sealing rings 103.
  • labyrinth sealing ring 105 on its inner circumference has several adjacent ring ribs, that of the outer surface of the race 101 with very little Face the gap, but without contact and with this form a labyrinth gap.
  • the race 101 normally no contact with the labyrinth sealing ring 105 , it is still advantageous that the Race 101 also over the area of the labyrinth seal 105 extends.
  • the labyrinth gap seal is normal a non-contact seal, but it can be under extreme operating conditions under certain circumstances between the ring ribs of the labyrinth sealing ring 105 and the Race 101 take place.
  • race 101 If the race 101 is not would be present, there would be grooves on the shaft journal 29 are generated so that it is damaged and the Rotor 9 becomes unusable. Thanks to the presence of the race 101 only needs the race 101 in such a case to be replaced, so that the rotor 9, otherwise Damage free, can be used again.
  • the opening of the lantern 109 lies at a distance from with the cooling fins 39 provided top of the oil container 7 opposite. A straight access path to the mouth of the lantern 109 from below is blocked by the oil container 7.
  • FIG. 4 shows a perspective view from below of the compressor with the oil container 7 removed, so that the screw holes 44 for the attachment of the oil container 7 and the large connecting opening 43, through which the oil container communicates with the transmission housing, are visible in the end wall of the transmission housing 1 , 4, the suction housing 5 is removed from the suction-side end of the rotor housing 3, so that there is a clear view of the inflow housing 4 with its supporting ribs 14 and the inflow openings 13 leading to the interior of the rotor housing 3.
  • FIG. 4 also shows the mouth of the lantern (ventilation duct) 109 on the underside of the rotor housing 3. As can be seen from Fig.
  • projections 111 are provided on the underside of the rotor housing 3, which the mouth of the lantern 109 against linear access from the Shield side.
  • These projections 111 can be formed by oil drain channels. The mouth of the lantern 109 is thus at a protected location, to which a straight-line access path is neither possible from below (because of the oil container 7) nor from the side (because of the projections 111).
  • the race 101 attached to the shaft journal 29 additionally serves as a spacing element, which is used to maintain a very precisely dimensioned gap between the pressure-side end face of the rotor 9 or 11 and the end face 113 of the rotor housing 3 facing it serves.
  • a spacing element which is used to maintain a very precisely dimensioned gap between the pressure-side end face of the rotor 9 or 11 and the end face 113 of the rotor housing 3 facing it serves.
  • this gap is set and maintained precisely in such a way that, when the rotor housing 3 is machined, the distance a between the end face 113 facing the rotor 9 and the contact shoulder 97 for the roller bearing 93 is manufactured with very narrow tolerances to a predetermined value ,
  • the length b of the race 101, which is used as a spacing element between the roller bearing 97 and the end face of the rotor 9, is also ground with correspondingly precise tolerances to a value which has an oversize compared to the distance a , which is exactly the width of the between Corresponds to rotor 9 and the rotor housing 3 gap to be set.

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

Claims (5)

  1. Compresseur à vis comportant deux rotors montés avec leurs axes parallèles dans un carter de rotor (3), lesquels s'engagent l'un dans l'autre par des dents et entredents en forme de vis et qui, pendant le fonctionnement, refoulent de l'air depuis une extrémité côté aspiration en direction d'une extrémité côté refoulement du carter de rotor (3), et le compriment ainsi, comportant un carter de transmission (1) disposé à une extrémité du carter de rotor (3), dans lequel est monté un arbre d'entraínement (17) avec transmission d'entraínement (19, 21) pour les rotors (9, 11), et dans lequel est prévue une lubrification à huile de la transmission d'entraínement et comportant un mécanisme de synchronisation (25, 27) couplant les rotors (9, 11) pour une synchronisation sans contact et en sens contraire, le carter de transmission (1) ayant la forme d'un stator en forme de disque et étant pourvu de moyens (31, 33) pour sa fixation sur un support, le mécanisme d'entraínement (19, 21) et le mécanisme de synchronisation (25, 27) étant disposés tous deux dans le carter de transmission (1) à l'extrémité côté refoulement du carter de rotor (3) et les paliers (53) pour les tourillons des arbres (55, 57) côté aspiration des rotors (9, 11) n'étant pas lubrifiés et étant disposés dans un carter d'arrivée (4) se raccordant au carter de rotor (3) à l'extrémité côté aspiration, lequel carter d'arrivée présente des orifices d'arrivée (13) pour l'air aspiré par les rotors (9, 11), de manière que la partie du carter d'arrivée (4), contenant les paliers (55, 57) soit refroidie par l'air aspiré, caractérisé en ce que le carter d'arrivée (4) est entouré à distance par un carter d'aspiration (5) fixé au carter de rotor (3) et qui présente au moins un orifice d'aspiration (59) et dans lequel un filtre (6) et/ou une garniture de silencieux (75) est disposé dans le parcours d'écoulement de l'air depuis l'orifice d'aspiration (69) vers les orifices d'entrée (13).
  2. Compresseur à vis selon la revendication 1, caractérisé en ce que chacun des paliers (53) pour les tourillons des arbres (55, 57) côté aspiration des rotors (9, 11), est un palier de roulement entièrement fermé avec remplissage de graisse à vie.
  3. Compresseur à vis selon la revendication 1, caractérisé en ce que le carter d'entrée (4) présente des perçages (66) à travers lesquels les tourillons des arbres (55, 57) des rotors (9, 11) sont accessibles, et en ce que sur chaque tourillon d'arbre (53, 55) est formée une prise d'outil (63) pour y placer un outil de vissage.
  4. Compresseur à vis selon l'une des revendications 1 à 3, caractérisé en ce que le carter d'entrée (4) présente des perçages (66) pour l'accès aux tourillons des arbres (53, 57) des rotors (9, 11), et en ce qu'à travers l'ouverture (9, 66) une bague (53), bloquant le palier (53) sur le tourillon d'arbre (55, 57), est accessible de manière que la bague de blocage (53) puisse être enlevée du tourillon d'arbre (55, 57) puis, éventuellement après desserrage de vis de fixation, que le carter d'entrée (4) avec les paliers (53) et éventuellement les garnitures d'étanchéité (87) puisse être retiré du tourillon d'arbre (55, 57).
  5. Compresseur à vis selon l'une des revendications 1 à 4, caractérisé en ce que chaque tourillon d'arbre (55, 57) côté aspiration est rendu étanche dans le carter d'entrée (4) par une bague d'étanchéité à lèvres (87) qui s'applique contre le tourillon d'arbre ou une bague de roulement (85) disposée sur le tourillon d'arbre, et en ce qu'entre la bague d'étanchéité à lèvres (87) et le carter de rotor est disposée une bague de protection (89) qui fait face sans contact et à faible distance à la surface périphérique du tourillon d'arbre ou de la bague de roulement (85).
EP00916927A 1999-03-10 2000-03-10 Compresseur a vis Expired - Lifetime EP1163451B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29904410U DE29904410U1 (de) 1999-03-10 1999-03-10 Schraubenkompressor
DE29904410U 1999-03-10
PCT/EP2000/002152 WO2000053930A1 (fr) 1999-03-10 2000-03-10 Compresseur a vis

Publications (2)

Publication Number Publication Date
EP1163451A1 EP1163451A1 (fr) 2001-12-19
EP1163451B1 true EP1163451B1 (fr) 2004-05-19

Family

ID=8070665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00916927A Expired - Lifetime EP1163451B1 (fr) 1999-03-10 2000-03-10 Compresseur a vis

Country Status (5)

Country Link
US (1) US6488488B2 (fr)
EP (1) EP1163451B1 (fr)
AT (1) ATE267343T1 (fr)
DE (2) DE29904410U1 (fr)
WO (1) WO2000053930A1 (fr)

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DE202007005097U1 (de) * 2007-04-05 2008-08-07 Ghh-Rand Schraubenkompressoren Gmbh Schalldämpfer zur Verwendung an einem Kompressor

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US9267504B2 (en) 2010-08-30 2016-02-23 Hicor Technologies, Inc. Compressor with liquid injection cooling
CA2809945C (fr) 2010-08-30 2018-10-16 Oscomp Systems Inc. Compresseur a refroidissement par injection de liquide
US9657732B2 (en) * 2010-09-23 2017-05-23 Ingersoll-Rand Company Modular discharge silencer for vehicle-mounted compressor
JP5527396B1 (ja) * 2012-12-17 2014-06-18 ダイキン工業株式会社 スクリュー圧縮機
DE102013106344B4 (de) * 2013-06-18 2015-03-12 Bitzer Kühlmaschinenbau Gmbh Kältemittelverdichter
DE102014107684A1 (de) * 2014-06-02 2015-12-03 Pfeiffer Vacuum Gmbh Vakuumpumpe
WO2018091939A1 (fr) 2016-11-15 2018-05-24 Carrier Corporation Séparateur de lubrifiant avec silencieux
CN106523361A (zh) * 2016-12-09 2017-03-22 江静烈 一种干式螺杆压缩机
DE102017206243A1 (de) * 2017-04-11 2018-10-11 Gardner Denver Schopfheim Gmbh Schraubenverdichteranordnung
BE1026195B1 (nl) * 2018-04-11 2019-11-12 Atlas Copco Airpower Naamloze Vennootschap Vloeistof geïnjecteerde compressorinrichting
US11608820B2 (en) * 2018-08-28 2023-03-21 Quincy Compressor Llc Belt guard comprising a compressor silencer
CN114505673B (zh) * 2022-02-18 2023-10-20 日立压缩机(苏州)有限公司 一种空压机主机排气端螺杆间隙调整工艺

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DE50006495D1 (de) 2004-06-24
US20020048521A1 (en) 2002-04-25
DE29904410U1 (de) 2000-07-20
US6488488B2 (en) 2002-12-03
WO2000053930A1 (fr) 2000-09-14
ATE267343T1 (de) 2004-06-15
EP1163451A1 (fr) 2001-12-19

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