EP1702163A1 - Schraubenverdichter mit einem schalldämpfer - Google Patents
Schraubenverdichter mit einem schalldämpferInfo
- Publication number
- EP1702163A1 EP1702163A1 EP04803671A EP04803671A EP1702163A1 EP 1702163 A1 EP1702163 A1 EP 1702163A1 EP 04803671 A EP04803671 A EP 04803671A EP 04803671 A EP04803671 A EP 04803671A EP 1702163 A1 EP1702163 A1 EP 1702163A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- screw compressor
- compressor according
- screw
- muffler
- 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
Links
- 239000006096 absorbing agent Substances 0.000 title 1
- 230000003584 silencer Effects 0.000 claims description 14
- 239000002775 capsule Substances 0.000 claims description 13
- 230000002596 correlated effect Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000013016 damping Methods 0.000 abstract description 5
- 230000010349 pulsation Effects 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
- F04C29/061—Silencers using overlapping frequencies, e.g. Helmholtz resonators
-
- 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
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- 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
-
- 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
- F04C29/0021—Systems for the equilibration of forces acting on the pump
- F04C29/0035—Equalization of pressure pulses
Definitions
- the invention relates to a screw compressor comprising an outer housing, a compressor screw housing arranged in the outer housing, in which rotor bores for screw rotors are arranged, a drive arranged in the outer housing on one side of the compressor screw housing and a drive in the outer housing on a side of the compressor screw housing opposite the drive arranged bearing housing.
- Screw rotor correlated basic frequency is excited, which at least leads to a noise load, but possibly with random resonances can lead to mechanical problems in the subsequent line system for the compressed working medium and even mechanical damage in the line system.
- the invention is therefore based on the object of largely avoiding such vibrations.
- a screw compressor of the type described in the introduction in that a muffler through which the compressed working medium flows is arranged within the outer housing.
- a muffler of this type has the great advantage that the formation of pressure vibrations can already be suppressed inside the outer housing and the screw compressor thus already emits less running noise and, in addition, essentially no undesired vibrations can occur in the subsequent lines for the compressed working medium ,
- the arrangement of the muffler in the outer housing is particularly advantageous when the muffler is arranged in an interior space of the outer housing that receives the compressed working medium.
- the silencer since it conducts compressed working medium, is to be designed as a pressure vessel which withstands the differential pressure between the pressure of the compressed working medium and the ambient pressure.
- the pressure vibrations can be damped particularly efficiently when the compressed working medium passes directly into the muffler from an outlet channel for the compressed working medium.
- the outlet channel it would be conceivable to design the outlet channel so that the muffler can be arranged in it.
- the muffler is arranged immediately following the outlet duct for the compressed working medium and the outlet duct can thus be designed to save space.
- connection to the outlet duct With regard to the connection to the outlet duct, the most varied of possibilities are conceivable.
- An expedient solution provides that the muffler is connected to the outlet duct with an inlet connection.
- a spatially expedient solution provides that the outlet channel for the compressed working medium runs in the bearing housing, which is arranged on a side of the compressor screw housing opposite the drive, so that the outlet channel can easily be guided in a suitable manner.
- the silencer could, for example, be arranged next to the bearing housing or to the side of the bearing housing.
- a structurally particularly favorable solution provides, however, that the muffler is arranged on a side of the bearing housing facing away from the compressor screw housing and can therefore be arranged in a simple manner within the outer housing.
- the muffler is arranged between the bearing housing and the end of the outer housing.
- the muffler has a muffler housing in which a damper tube having a cross-sectional jump to the surroundings is inserted on the inlet and outlet sides.
- the phenomenon of reflection of pressure vibrations at the open end of the damper tube can advantageously dampen the undesirable pressure vibrations.
- a damper tube is used, a favorable damping is to be provided either on the inlet side of the silencer or on the outlet side.
- An expedient solution provides that the damper tube is arranged on the output side of the silencer housing. The damper tube can be tuned to different frequencies.
- the damper tube has a length which corresponds to approximately a quarter of a wavelength of a pressure oscillation in the working medium to be compressed at a basic frequency of the screw compressor.
- the basic frequency is the frequency correlated to a drive speed of the screw rotor.
- a particularly favorable damping effect can be achieved if the compressed working medium is guided in a meandering manner in the damper housing and, in particular, has to run in a meandering manner in the damper housing in order to exit the silencer again.
- the muffler housing it is particularly advantageous if it is arranged between the bearing housing and the end closure of the outer housing.
- a particularly good decoupling of the pressure vibrations from the environment can be achieved if the muffler is arranged without a connection to the outer housing and thus no sound can be transmitted to the outer housing via the connection between the muffler and the outer housing.
- the silencer is preferably supported on the bearing housing. This can be done either by fixing the muffler via the connection to the outlet duct or by additional holding elements.
- An expedient solution provides that the muffler opens into an interior of the outer housing.
- the muffler emits the compressed working medium into a distribution space of the interior, after which the compressed working medium flows through an oil separator element.
- the oil separator element can be arranged in a wide variety of ways.
- An expedient solution provides that the interior in the outer housing is divided into a distribution space and an outflow space by the oil separator element, the compressed working medium flowing from the outflow space to an outlet space.
- the oil separator element can be arranged particularly advantageously in connection with the muffler inside the outer housing when the muffler passes through the oil separator element, so that there is the possibility of arranging the oil separator element between the bearing housing and the end of the outer housing, the oil separator element expediently being located over the entire length Cross section of Extends outer housing in this area in order to have the largest possible cross-sectional area, which is, however, reduced by the cross-sectional area with which the silencer passes through the oil separator element.
- a flow cross-sectional constriction is preferably provided in the outlet channel.
- Pressure peaks can be intercepted particularly advantageously if the flow cross-sectional constriction is designed such that the compressed working medium flows through it in a meandering manner.
- the outer housing can in principle be designed in a wide variety of ways, for example composed of a plurality of housing sleeves with end covers.
- a particularly expedient solution provides for the outer housing to comprise a center section which receives the compressor screw housing and a pressure-side end section which adjoins the center section.
- the pressure-side end section is preferably designed as a housing capsule extending from the middle section.
- a housing capsule is preferably designed to be pressure-resistant as a whole and is connected to the central section via a flange connection.
- the housing capsule is preferably designed such that both the bearing housing and the muffler and in particular also the oil separator element are arranged in it.
- FIG. 1 shows a longitudinal section along line 1-1 in Fig. 4.
- FIG. 2 shows a longitudinal section along line 2-2 in FIG. 4;
- Fig. 3 is a longitudinal section along line 3-3 in Fig. 4;
- FIGS. 1 to 3 shows a plan view of the compressor according to the invention in the direction of arrow A in FIGS. 1 to 3;
- FIG. 5 shows a perspective illustration of a screw compressor according to the invention with the pressure-side housing capsule of the outer housing removed, so that a bearing housing and a silencer can be seen;
- FIG. 6 is an illustration of the muffler of the screw compressor according to the invention in side view and
- Fig. 7 is a longitudinal section through the silencer shown in Fig. 6.
- the motor-side end section 14 is formed by a first housing sleeve 18 which is integrally formed on the central section 12 and which is closed by a first housing cover 20 which is connected via a
- Flange connection 22 is detachably connected to the first housing sleeve 18.
- a drive motor Arranged in the motor-side end section 14 is a drive motor, designated as a whole by 30, which is designed, for example, as an electric motor, which has a stator 32, which is held in the first housing sleeve 18 and surrounds a rotor 34, the rotor 34 being on a Whole with 36 designated drive shaft sits.
- a compressor screw housing designated as a whole by 40, which is preferably formed in one piece on the middle section 12 and has rotor bores 42 and 44 for receiving screw rotors 46 and 48, which around mutually parallel axes are rotatable.
- the screw rotor 46 is seated on the drive shaft 36 which extends from the stator 32 and passes through the screw rotor 46.
- the rotatable mounting of the screw rotors 46 and 48 takes place on a side of the drive motor 30 thereof via first rotary bearings 50 and 52, which are seated in a first bearing housing 54 which is integrally formed on the compressor screw housing 40 on the side facing the drive motor 30.
- the screw rotors 46 and 48 are supported via second rotary bearings 60 and 62, which are arranged in a second bearing housing 64, which is detachably attached to the compressor screw housing 40 on its side facing away from the drive motor 30 via a flange connection 66 on the Compressor screw housing 40 is held, the second bearing housing 64 in turn also having a wall 68 which closes the rotor bores 42, 44 on the pressure side and is only penetrated by shaft ends leading to the second rotary bearings 60 and 62 for mounting the screw rotors 46, 48, in which 1 and 2 only the stub shaft 70, the drive shaft 36 can be seen.
- the rotary bearings 60 and 62 are preferably seated in the bearing recesses 72 and 74 provided in the second bearing housing 64, which have openings 76 and 78 on a side facing away from the compressor screw housing 40, which openings can be closed by an end cover 80 of the second bearing housing 64 Openings 76 and 78, the rotary bearings 60 and 62 can be inserted into the bearing recesses 72 and 74. As can be seen in the section according to FIG.
- a control slide 82 in the compressor screw housing 40 there is also a control slide 82 in a slide bore 84, which can be displaced in the direction parallel to the axes of rotation of the screw rotors 46 and 48, and controllably by one designated as a whole by 90
- Actuating cylinder which is arranged in the second bearing housing 64 and comprises an actuating piston 94 which can be displaced in a cylinder chamber 92 of the second bearing housing 64 and which is connected to the control slide 82 via a piston rod 96.
- the cylinder chamber 92 is also provided with an opening 98 which can be closed by the end cover 80 of the second bearing housing 64.
- working medium to be compressed is supplied via an inlet opening 102 provided in the first housing cover 20 to an inlet chamber 104 which is arranged within the motor-side end section 14 and in which the electric motor 30 is also arranged, so that the electric motor 30 is cooled by the working medium flowing through the inlet space 104.
- the working medium flows from the inlet space 104 into an inlet 106 which is provided on a side of the compressor housing 40 facing the drive motor 30 and which feeds the working medium to the screw rotors 46 and 48 for compression.
- the working medium compressed by the screw rotors 46 and 48 is discharged by the screw rotors 46 and 48 into an outlet 108 in the compressor screw housing 40, which is on a side facing away from the drive motor 30 Side of the compressor screw housing 40 is arranged, and passes from the outlet 108 into an outlet channel 110, which is arranged in the second bearing housing 64 and is initially formed by a slide receptacle 112 adjoining the slide bore 84, into which the control slide 82 enters slide positions, which correspond to a lower compressor output than the maximum output.
- the slide receptacle 112 is also penetrated by the piston rod 96 guided by the actuating piston 94 to the control slide 82.
- the outlet channel 110 leads from this slide receptacle 112 via an outlet window 114, which is arranged to the side of the slide receptacle 112 and through which the compressed working medium can flow in a direction transverse to an actuating direction 116 of the control slide 82, to an outflow channel 124.
- the outlet window 114 is preferably provided with flow deflection walls 118 and 120 arranged on both sides thereof, which prevent direct flow of the compressed working medium transversely to the direction of adjustment 116 and force the compressed working medium to flow through the outlet window 114 in the form of a meandering flow profile 122 before the compressed one Working medium enters the outflow channel 124 in the second bearing housing 64, which runs in the direction of the end cover 80, to an outflow opening 126 of the end cover 80.
- the flow deflecting walls 118 and 120 in the region of the outlet window 114 serve to dampen the spread of strong pressure peaks between the slide holder and the outflow channel 124 through the meandering flow course 122.
- a muffler designated as a whole by 130, adjoins the outflow opening 126 with its inlet port 132, the inlet port 132 being part of an inlet pipe 134 which, starting from the inlet port 132 which tightly engages in the outflow opening 126, extends into a damper housing 136 of the muffler and has an orifice 138 located inside the damper housing 136, at which the compressed working medium guided in the inlet pipe 134 experiences a cross-sectional jump, for example by more than a factor of 2, when it enters an interior 140 of the damper housing 136.
- the muffler 130 comprises a damper tube 142 which passes through the damper housing 136 and has an inner mouth opening 144 and an outer mouth opening 146.
- the compressed working medium that spreads out in the interior 140 of the damper housing 136 enters the inner mouth opening 144 of the damper tube 142 with a cross-sectional jump of more than a factor of 2 and flows through it in the direction of the outer mouth opening 146 lying outside the damper housing 136 ,
- the length of the damper tube 142 between the inner mouth opening 144 and the outer mouth opening 146 is approximately a quarter of the wavelength of the basic vibration formed by the rotating screw rotors 46 and 48 and correlated with their speed, so that the pressure fluctuations occurring in the pressure-side working medium are dampened by the muffler 130 with the damper tube 142 before this working medium emerges from the outer opening 146 of the muffler 130.
- the muffler 130 is preferably designed such that the inlet pipe 134 and the damper pipe 142 extend approximately parallel to one another and partially overlap with their extension in their longitudinal direction, so that the mouth opening 138 of the inlet pipe 134 and the inner mouth opening 144 of the damper pipe 142 are arranged radially and axially offset with respect to a longitudinal direction 148 of the damper tube 142, and consequently the compressed working medium in the damper housing 136 must flow in a meandering manner from the mouth opening 138 of the inlet connection 132 to the inner mouth opening 144 of the damper tube 142.
- the damping effect of the muffler 130 can also be further improved when viewed in the longitudinal direction 148, the end walls 135 and 137 of the damper housing 136 are at a distance from one another which also corresponds to the order of a quarter of the wavelength of the pressure vibrations propagating with the fundamental frequency , the distance can preferably deviate up to 25%, more preferably up to 15%, from a quarter of the wavelength.
- the damper housing 136 Since oil can also already separate in the damper housing 136, in particular due to the meandering guidance of the compressed working medium, the damper housing 136 is provided on its deepest side in the direction of gravity with an opening 149 from which oil separating out can flow in the damper housing 136.
- the pressure-side end section 16 is formed by a housing capsule 150, which is connected to the central section 12 with a flange connection 152 and, starting from the central section on a side opposite the drive motor 30, extends away from the latter with a capsule sleeve 154, which both encloses the second bearing housing 64 as well as the muffler 130 on the outside and is closed with a capsule base 156 on a side opposite the flange connection 152.
- the housing capsule 150 encloses an interior 158, through which the compressed working medium flows, in which the second bearing housing 64 and the muffler 130 are arranged, the interior 158 through an oil separator 160, which extends approximately parallel to the capsule bottom 156 and the end cover 80, into a distribution space 162, which lies between the oil separator 160 and the capsule bottom 156, and an outflow space 164 is subdivided, which lies between the oil separator 160 and the compressor screw housing 40.
- the oil separator 160 comprises a support element 159 in the form of a perforated plate, which in turn is penetrated by the muffler 130 and supports the muffler 130 in the region of its damper housing 136.
- the support element 159 is in turn rigidly connected to the bearing housing 64, in particular the end cover 80 thereof, for example via stud bolts.
- the oil separator 160 comprises a layer of a knitted, braided or woven fabric made of metal or plastic held in position by the support element 159, which layer has the task of combining the oil mist carried in the compressed working medium into drops and thus for separating oil from the compressed one To contribute to the working medium.
- oil drops are formed which either settle in the oil separator 160 itself in the direction of gravity and collect in the direction of gravity, or also settle out of the compressed working medium after flowing through the oil separator due to the effect of gravity.
- the muffler 130 is arranged in such a way that it passes through the oil separator 160, the inlet connection 132 being on one side of the oil separator 160 and being surrounded by the outflow space 164, while the outer opening of the damper tube 142 opens into the distribution space 162, in which the compressed working medium with a cross-sectional jump of more than a factor of 2 is distributed over a large flow cross-section, which essentially corresponds to an inner cross-section of the capsule sleeve 154, minus the cross-sectional area required by the muffler 130 when the oil separator 160 passes through, so that the compressed Working medium can flow through the oil separator 160 with a large flow cross-section in the direction of the outflow space 164, in order then from the outflow space 164 to an outlet line provided in the region of the central section 12 and at least partially encompassing the compressor screw housing 40 to be fed 166, which leads to an outlet opening provided in the outer housing 10.
- the oil separated from the oil separator 160 collects in
- the oil is taken up from the oil sump 170 and thereby filtered through an oil filter 172, which is arranged in the bearing recess 72 of the second bearing housing 64 to save space, preferably with oil being supplied and removed to the oil filter 172 via the end cover 80 ,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10359032A DE10359032A1 (de) | 2003-12-15 | 2003-12-15 | Schraubenverdichter |
PCT/EP2004/014013 WO2005057014A1 (de) | 2003-12-15 | 2004-12-09 | Schraubenverdichter mit einem schalldämpfer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1702163A1 true EP1702163A1 (de) | 2006-09-20 |
EP1702163B1 EP1702163B1 (de) | 2011-06-22 |
Family
ID=34672821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04803671A Active EP1702163B1 (de) | 2003-12-15 | 2004-12-09 | Schraubenverdichter mit einem schalldämpfer |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060243520A1 (de) |
EP (1) | EP1702163B1 (de) |
CN (1) | CN100526649C (de) |
AT (1) | ATE513995T1 (de) |
DE (1) | DE10359032A1 (de) |
ES (1) | ES2366364T3 (de) |
WO (1) | WO2005057014A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060086563A1 (en) * | 2004-10-21 | 2006-04-27 | Ingersoll-Rand Company | Compressor discharge pulsation dampener |
JP4301569B2 (ja) * | 2005-12-26 | 2009-07-22 | 日立アプライアンス株式会社 | 二段スクリュー圧縮機 |
JP4928978B2 (ja) * | 2007-02-23 | 2012-05-09 | 三菱重工業株式会社 | 電動圧縮機 |
ES2629981T3 (es) * | 2007-10-01 | 2017-08-17 | Carrier Corporation | Amortiguador de pulsación para compresor de tornillo |
DE102008036317A1 (de) | 2008-07-29 | 2010-02-25 | Bitzer Kühlmaschinenbau Gmbh | Schraubenverdichter |
US8591208B2 (en) * | 2009-06-24 | 2013-11-26 | Southwest Research Institute | Multi-frequency pulsation absorber at cylinder valve cap |
US9140260B2 (en) * | 2010-06-08 | 2015-09-22 | Hi-Bar Blowers, Inc. | Rotary lobe blower (pump) or vacuum pump with a shunt pulsation trap |
US10941770B2 (en) | 2010-07-20 | 2021-03-09 | Trane International Inc. | Variable capacity screw compressor and method |
DK2649277T3 (en) * | 2010-12-10 | 2017-05-01 | Ateliers Busch S A | Vacuum pump for applications in vacuum packaging machines |
US9151292B2 (en) * | 2011-01-05 | 2015-10-06 | Hi-Bar Blowers, Inc. | Screw compressor with a shunt pulsation trap |
US9140261B2 (en) | 2011-03-14 | 2015-09-22 | Hi-Bar Blowers, Inc. | Shunt pulsation trap for cyclic positive displacement (PD) compressors |
US9732754B2 (en) | 2011-06-07 | 2017-08-15 | Hi-Bar Blowers, Inc. | Shunt pulsation trap for positive-displacement machinery |
US9243557B2 (en) | 2011-09-17 | 2016-01-26 | Paul Xiubao Huang | Shunt pulsation trap for positive displacement (PD) internal combustion engines (ICE) |
US9551342B2 (en) | 2014-05-23 | 2017-01-24 | Paul Xiubao Huang | Scroll compressor with a shunt pulsation trap |
CN102367791A (zh) * | 2011-11-04 | 2012-03-07 | 安徽江淮汽车股份有限公司 | 用于轻型卡车气制动系统空气压缩机的进气消声器 |
DE102012102349A1 (de) * | 2012-03-20 | 2013-09-26 | Bitzer Kühlmaschinenbau Gmbh | Kältemittelverdichter |
DE102012102346A1 (de) * | 2012-03-20 | 2013-09-26 | Bitzer Kühlmaschinenbau Gmbh | Kältemittelverdichter |
DE102012102404A1 (de) | 2012-03-21 | 2013-09-26 | Bitzer Kühlmaschinenbau Gmbh | Kälteanlage |
DE102013020532A1 (de) * | 2013-12-12 | 2015-06-18 | Gea Refrigeration Germany Gmbh | Verdichter |
WO2018091939A1 (en) * | 2016-11-15 | 2018-05-24 | Carrier Corporation | Lubricant separator with muffler |
CN106949063B (zh) * | 2017-05-09 | 2018-09-11 | 珠海格力电器股份有限公司 | 油气分离装置、压缩机和空调系统 |
DE102017210770B4 (de) | 2017-06-27 | 2019-10-17 | Continental Automotive Gmbh | Schraubenspindelpumpe, Kraftstoffförderaggregat und Kraftstofffördereinheit |
CN112334662B (zh) | 2018-10-02 | 2022-08-12 | 开利公司 | 用于压缩机的多级谐振器 |
CN110017282B (zh) * | 2019-04-30 | 2020-11-06 | 西安交通大学苏州研究院 | 气流脉动衰减装置以及空气压缩机 |
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JPH11315784A (ja) * | 1998-04-30 | 1999-11-16 | Tochigi Fuji Ind Co Ltd | 流体機械 |
DE19845993A1 (de) * | 1998-10-06 | 2000-04-20 | Bitzer Kuehlmaschinenbau Gmbh | Schraubenverdichter |
JP4062001B2 (ja) * | 2001-10-19 | 2008-03-19 | 株式会社デンソー | 気体圧縮装置 |
-
2003
- 2003-12-15 DE DE10359032A patent/DE10359032A1/de not_active Ceased
-
2004
- 2004-12-09 CN CNB2004800372988A patent/CN100526649C/zh active Active
- 2004-12-09 AT AT04803671T patent/ATE513995T1/de active
- 2004-12-09 WO PCT/EP2004/014013 patent/WO2005057014A1/de active Application Filing
- 2004-12-09 ES ES04803671T patent/ES2366364T3/es active Active
- 2004-12-09 EP EP04803671A patent/EP1702163B1/de active Active
-
2006
- 2006-06-13 US US11/451,709 patent/US20060243520A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2005057014A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN100526649C (zh) | 2009-08-12 |
ES2366364T3 (es) | 2011-10-19 |
EP1702163B1 (de) | 2011-06-22 |
DE10359032A1 (de) | 2005-07-14 |
WO2005057014A1 (de) | 2005-06-23 |
US20060243520A1 (en) | 2006-11-02 |
CN1894508A (zh) | 2007-01-10 |
ATE513995T1 (de) | 2011-07-15 |
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