WO2014075658A2 - Kraftfahrzeug-vakuumpumpe - Google Patents
Kraftfahrzeug-vakuumpumpe Download PDFInfo
- Publication number
- WO2014075658A2 WO2014075658A2 PCT/DE2013/100368 DE2013100368W WO2014075658A2 WO 2014075658 A2 WO2014075658 A2 WO 2014075658A2 DE 2013100368 W DE2013100368 W DE 2013100368W WO 2014075658 A2 WO2014075658 A2 WO 2014075658A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sound
- motor vehicle
- vacuum pump
- hood
- vehicle vacuum
- Prior art date
Links
- 238000013016 damping Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 38
- 239000004952 Polyamide Substances 0.000 claims description 9
- 229920002647 polyamide Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 239000011324 bead Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000002984 plastic foam Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 241000405070 Percophidae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
-
- 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
-
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/06—Polyamides, e.g. NYLON
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/16—Fibres
Definitions
- the invention relates to a motor vehicle vacuum pump with a Pumpengekor- che, on which a sound hood is mounted, which limits a volume of soundproofing.
- WO 201 1/134448 A2 discloses a vacuum pump with a pump housing in which at least one pump housing part is formed from a sandwich sheet material with two sheet metal layers, between which a plastic layer is arranged, by means of which the sheet metal layers are decoupled from one another by vibration technology.
- the vacuum pump may include a muffler formed of the sandwich sheet material.
- the object of the invention is to further optimize a motor vehicle vacuum pump with a pump housing surface on which a sound hood is mounted, which limits a volume of sound damping, with a view to an undesirable noise during operation of the motor vehicle vacuum pump on.
- the object is achieved in a motor vehicle vacuum pump with a pump housing surface, on which a sound hood is mounted, which limits a sound damping volume, achieved in that the sound hood has a three-dimensional Schalldissipations Modell on at least one of the Pumpengeoph sese surface facing inner surface.
- the motor vehicle vacuum pump is preferably designed as a vane pump and driven by an electric motor. Serving in a motor vehicle the automotive vacuum pump to generate a negative pressure.
- the motor vehicle is preferably designed as a hybrid vehicle with an internal combustion engine drive and a further drive, for example an electric motor drive. If the internal combustion engine drive is turned off, then the automotive vacuum pump according to the invention can be driven by the electric motor.
- the requirements with regard to a noise during operation of the motor vehicle vacuum pump with the internal combustion engine drive switched off are higher than in conventional motor vehicles, in which the motor vehicle vacuum pump is driven by the internal combustion engine drive.
- the Schalldissipations Jardin invention advantageously allows a frequency shift, which has an advantageous effect on the noise during operation of the motor vehicle vacuum pump.
- the Schalldissipations Jardin allows an increase in the strength of the sound hood.
- the Schalldissipations Practical limits the sound attenuation volume inside the sound hood.
- the pump housing surface is spaced from the sound dissipation structure.
- a preferred embodiment of the motor vehicle vacuum pump is characterized in that the sound dissipation structure comprises a honeycomb structure.
- the honeycomb structure has proven to be particularly advantageous in terms of improving the acoustic properties of the acoustic hood in the context of the present invention.
- the sound dissipation structure has a multiplicity of depressions.
- the recesses are preferably distributed substantially uniformly over a surface or the entire inner surface of the acoustic hood. The arrangement and design of the recesses is optimized with regard to the acoustic properties of the acoustic hood.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the depressions each have a polygonal, in particular hexagonal ones, have basic ss.
- the polygonal outline of the recesses is preferably hexagonal or hexagonal.
- the depressions are advantageously polyhedra whose surfaces are optimized with regard to the acoustic properties of the acoustic hood.
- a further preferred exemplary embodiment of the motor vehicle vacuum pump is characterized in that at least one damping body made of a sound damping material is arranged in the sound damping volume and does not extend or only partially into the sound dissipation structure.
- the sound-damping material is preferably a plastic foam, in particular a melamine foam.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the sound hood is pot-shaped with a circular cylinder-like base body and a convexly curved bottom.
- the circular cylinder shell-like basic body limits the damping volume in the interior of the sound hood in the radial direction.
- the preferably convexly outwardly curved bottom limits the damping volume in the interior of the sound hood in the axial direction.
- the term axial refers to a rotational axis of the motor vehicle vacuum pump, in particular a rotor of the motor vehicle vacuum pump.
- Axial means in the direction or parallel to the axis of rotation of the motor vehicle vacuum pump.
- Radial means transverse to the axis of rotation of the motor vehicle vacuum pump.
- a further preferred exemplary embodiment of the motor vehicle vacuum pump is characterized in that the sound dissipation structure is formed on the inside of the convex bottom of the sound hood. This arrangement has proved to be particularly advantageous in the context of the present invention. In addition, the formation of the Schalldissipations Jardin is easily and inexpensively produced inside the outwardly curved bottom.
- a further preferred exemplary embodiment of the motor vehicle vacuum pump is characterized in that sound dissipation structure elements are formed on the inside of the circular cylinder shell-type main body of the sound hood. These are preferably ribs which extend in the axial direction. The ribs advantageously have a triangular cross-section that tapers radially inward.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the circular cylinder jacket-like basic body of the acoustic hood has reinforcing ribs on the outside. Due to the reinforcing ribs, the strength of the sound hood can be increased considerably in a simple manner.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the sound hood has an outlet opening.
- the outlet opening allows the escape of working medium, in particular air, from the interior of the sound hood.
- the outlet opening preferably extends substantially in the axial direction.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the sound hood has on the outside a support structure which surrounds the outlet opening.
- the support structure comprises, for example, a plurality of columnar projections whose free ends constitute bearing surfaces for covering the outlet opening.
- Such a cover prevents unwanted entry of contaminants through the outlet opening into the interior of the sound hood. However, the cover still allows the escape of working medium, such as air, from the interior of the sound hood through the outlet opening to the outside.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the sound hood has a flange-like angled peripheral edge.
- the flange-angled peripheral edge is preferably equipped with a plurality of fastening eyes.
- the attachment eyes are used to perform fasteners.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the sound hood is integrally formed from a plastic material.
- the plastic material from which the acoustic hood is formed differs advantageously, in particular with regard to its hardness, from a further material from which a pump housing cover is formed with the pump housing surface.
- the pump housing cover with the pump housing surface is advantageously formed from an aluminum material, in particular a spray-compacted aluminum material.
- the acoustic hood with the previously described features is advantageously produced by injection molding.
- a further preferred embodiment of the motor vehicle vacuum pump is characterized in that the acoustic hood is formed from a fiber-reinforced polyamide material. This is advantageously a polyamide material with the abbreviation PA66GF30.
- the invention further relates to a sound hood for a motor vehicle vacuum pump described above.
- the sound hood can be traded separately.
- Figure 1 is an exploded view of a motor vehicle vacuum pump according to the invention
- Figure 2 is a perspective view of the motor vehicle vacuum pump
- FIG. 1 A first figure.
- FIG. 3 shows the motor vehicle vacuum pump from Figures 1 and 2 in one
- FIG. 4 shows the motor vehicle vacuum pump of FIGS. 1 and 2 in a second longitudinal section
- Figure 5 is a perspective view of a decoupling element of
- FIG. 7 an enlarged detail from FIG. 6 in section
- FIG. 8 shows a sound hood of the motor vehicle vacuum pump from FIGS. 1 to 4 in longitudinal section
- Figure 9 is a perspective view of the acoustic hood of Figure 8 obliquely from above;
- Figure 10 is a perspective view of the acoustic hood of Figures 8 and
- Figure 1 1 is a perspective view of the acoustic hood of Figures 8 to
- FIGS. 1 to 4 show a motor vehicle vacuum pump 1 according to the invention with a pump housing 3 in different views.
- the pump housing 3 comprises a (not shown) housing pot, which is bolted to a pump cover 5.
- a suction port may be integrated, via which a working medium, such as air, is sucked into a working space in the interior of the pump housing 3, when the motor vehicle vacuum pump 1 is driven.
- the automotive vacuum pump 1 is designed as a vane pump with a plurality of vanes and a rotor. The rotor is drivingly connected to an electric motor.
- the general structure and function of a vane pump are described, for example, in International Publications WO 2004/074687 A2 and WO 201 1/134448 A2.
- the driven by the electric motor motor vehicle vacuum pump 1 is operated without lubricant, that is oil-free.
- the oil-free operated and driven by an electric motor vehicle vacuum pump 1 is installed in a motor vehicle, which in addition to an internal combustion engine drive another drive, for example, an electric motor drive includes.
- the automotive vacuum pump 1 driven by the electric motor is operated in the motor vehicle to generate negative pressure, for example, in a brake booster configured as a suction air booster.
- a brake booster configured as a suction air booster.
- the pump cover 5 delimits the working space of the motor vehicle vacuum pump 1 with its side facing away from a pump housing surface 8.
- a passage opening 10 is provided, which allows the passage of working fluid, in particular air, from the working space of the motor vehicle vacuum pump 1.
- the passage opening 10 is designed as a slot and has the shape of a circular arc in plan view. Because of its shape, the passage opening 10 is also referred to as Natural Stammsniere.
- the pump cover 5 with the pump housing surface 8 has substantially the shape of a circular disc, on the radially outside three mounting recesses 1 1, 12, 13 are formed.
- the mounting recesses 1 1 to 13 define through holes, which serve for passing through fastening means.
- the pump cover 5 is formed of an aluminum material.
- the aluminum material is preferably a spray-compacted aluminum material.
- the spray-compacted aluminum material preferably has a silicon content of more than fifteen percent and contains hard material particles.
- the aluminum material is preferably in an alloy which, in addition to silicon, may contain other elements such as iron or nickel.
- the hard material particles are preferably formed from silicon carbide.
- the decoupling element 20 has substantially the same shape as the pump cover 5, but is formed of a different material than the pump cover 5. Radially outwardly, three fastening eyes 21, 22, 23 are formed on the decoupling element 20, which together with the fastening recesses 11 to 13 on the pump cover 5 for fastening the sound hood 30 of the decoupling element 20 and the pump cover 5 to the pump housing pot (not shown) serve.
- the decoupling element 20 separates the acoustic hood 30 from the pump cover 5 in terms of vibration.
- the decoupling element 20 is formed from a relatively soft silicone rubber material compared to the aluminum material from which the pump cover 5 is formed.
- the silicone rubber material preferably has a Shore hardness of thirty to forty. As a result, it can be advantageously prevented that structure-borne noise is transmitted from the pump cover 5 to the sound hood 30.
- the acoustic hood 30 is decoupled by the decoupling element 20 in terms of vibration from the pump cover 5.
- the decoupling element 20 In addition to the sound decoupling function, the decoupling element 20 still exerts a sealing function.
- the decoupling element 20 comprises a main body 25 which has substantially the shape of a circular disk. Radially outside are on the main body 25 on both sides in each case two annular beads 26; 27 trained. In FIGS. 5 to 7 it can be seen that the two annular beads 26 on the
- Pump housing surface 8 facing surface of the decoupling element 20 are formed.
- the two annular beads 27 are formed on the pump housing surface 8 facing away from the surface of the decoupling element 20.
- annular beads 26; 27 the shape of circular rings, coaxial
- the annular beads 26; 27 have the shape of circular segments in cross-section and are integrally connected to the main body 25 of the decoupling element 20. Radially outside the annular beads 26; 27, the fastening eyes 21 to 23 are formed, which are also integrally connected to the main body 25 of the decoupling element 20.
- the decoupling element 20 also exerts a valve function.
- a valve 28 is integrated into the decoupling element 20.
- the valve 28 is designed as a duckbill valve and integrally connected to the main body 25 of the decoupling element 20.
- the duckbill of the valve 28 extends from the pump housing surface 8 into the interior of the sound hood 30.
- valve 28 as seen for example in Figure 3, above the
- Passage opening 10 of the pump cover 5 is arranged.
- Working medium escaping through the passage opening 10, such as air, thus passes through the valve 28 into the interior of the sound hood 30.
- the acoustic hood 30 is shown in FIGS. 8 to 11 alone in different views.
- the acoustic hood 30 has radially outside a mounting flange with three fastening eyes 31, 32, 33.
- the fastening eyes 31 to 33 serve to pass through screws 35, 36, 37, with the aid of which the sound hood 30 can be fastened together with the decoupling element 20 and the pump cover 5 to the pump housing pot (not shown) of the pump housing 3.
- the acoustic hood 30 is, in comparison to the decoupling element 20 and the
- Pump cover 5 formed of a third material, which is different from the materials of which the pump cover 5 and the decoupling element 20 are formed.
- the acoustic hood 30 is formed from a plastic material which has a different hardness than the materials from which the pump cover 5 or the decoupling element 20 are formed.
- the acoustic hood 30 is advantageously made of a polyamide material, in particular a polyamide material reinforced with glass fibers. As a result, on the one hand, the weight of the motor vehicle vacuum pump 1 of the sound hood 30 can be optimized. In addition, the manufacturing cost of the motor vehicle vacuum pump 1 can be reduced.
- the acoustic hood 30 is advantageously produced by injection molding.
- the polyamide material is preferably a glass fiber reinforced polyamide with the short name PA66GF30.
- the polyamide PA66GF30 material according to another aspect of the invention for noise reduction.
- the plastic material is resistant to chemicals.
- Such polyamide materials are used, for example, for noise reduction in engine covers.
- the acoustic hood 30 comprises a main body 40, which essentially has the shape of a straight circular cylinder jacket.
- the base body 40 represents a pot wall of the substantially cup-shaped sound hood 30.
- Angled edge 42 which represents the mounting flange with the fastening eyes 31 to 33.
- the fastening eyes 31 to 33 are integrally connected to the base body 40.
- Radially outwardly, reinforcement ribs 44 which are integrally connected to the base body 40 and the peripheral edge 42, are formed on the base body 40.
- the base body 40 merges into a convexly curved arched bottom 45, which forms the pot base of the pot-shaped acoustic hood 30.
- the curved bottom 45 has a central circular surface 46 on the outside.
- the convexly outwardly curved bottom 45 has an outlet opening 48, which allows the escape of working medium, such as air, from the interior of the sound hood 30 in the vicinity of the motor vehicle vacuum pump 1.
- the outlet opening 48 is in the assembled state of the motor vehicle vacuum pump 1, as seen for example in Figure 3, arranged diametrically to the passage opening 10 with the valve 28. Due to the diametrical arrangement, the outlet opening 48 is at a maximum distance from the passage opening 10 with the valve 28.
- the outlet opening 48, as well as the passage opening 10, extends substantially in an axial direction. Axial direction means parallel or in the direction of a rotation axis of the motor vehicle vacuum pump. 1
- the outlet opening 48 is surrounded by a support structure 50.
- the support structure 50 comprises three columns 51, 52, 53.
- the free ends of the columns 51 to 53 provide a bearing surface for a cover (not shown), which can be arranged slightly above the outlet opening 48.
- a cover prevents unwanted ingress of contaminants through the outlet opening 48 into the interior of the sound hood 30.
- the cover is to be designed and arranged so that the discharge of working medium through the outlet opening 48 from the interior of the sound hood 30 is not or only slightly affected ,
- the sound hood 30 has a sound dissipation structure 60 on the inside of the curved bottom 45.
- the sound dissipation structure 60 includes a plurality of recesses 61 distributed internally over the surface of the domed floor 45.
- the recesses 61 are honeycomb-shaped and each have, viewed in plan view, a substantially hexagonal circumference. Overall, the depressions have the shape of polyhedra, which are optimized for airborne sound dissipation inside the acoustic hood 30.
- a damping body made of a sound damping material can be arranged in the interior of the sound hood 30 between the decoupling element 20 and the curved bottom 45 of the sound hood 30.
- the sound damping material is advantageously a plastic foam, in particular a melamine plastic foam, for sound absorption.
- Decoupling element 20 are each combined with a collar sleeve 65, 66, 67.
- the collar sleeves 65 to 67 each comprise a sleeve 68 which extends from the respective fastening eye 21.
- a collar 69 is formed at the free end of the sleeve 68.
- the collar 69 tapers towards the free end of the collar sleeve 65.
- the collar 69 and the sleeve 68 of the collar sleeve 65 are integrally connected to the fastening eye 21.
- the base body 40 of the sound hood 30 is equipped on its inside with a plurality of sound dissipation structure elements 71.
- the sound dissipation structure elements 71 are ribs which are integrally connected to the base body 40 of the sound hood 30.
- the ribs each have a triangular cross-section that tapers radially inward.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/442,833 US20160201671A1 (en) | 2012-11-19 | 2013-10-25 | Vacuum pump for a motor vehicle |
KR1020157012643A KR20150070321A (ko) | 2012-11-19 | 2013-10-25 | 자동차를 위한 진공 펌프 |
DE112013005506.6T DE112013005506A5 (de) | 2012-11-19 | 2013-10-25 | Kraftfahrzeug-Vakuumpumpe |
CN201380060414.7A CN104968943B (zh) | 2012-11-19 | 2013-10-25 | 机动车辆真空泵 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012111111 | 2012-11-19 | ||
DE102012111111.1 | 2012-11-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014075658A2 true WO2014075658A2 (de) | 2014-05-22 |
WO2014075658A3 WO2014075658A3 (de) | 2014-12-04 |
Family
ID=49578057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2013/100368 WO2014075658A2 (de) | 2012-11-19 | 2013-10-25 | Kraftfahrzeug-vakuumpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160201671A1 (de) |
KR (1) | KR20150070321A (de) |
CN (1) | CN104968943B (de) |
DE (1) | DE112013005506A5 (de) |
WO (1) | WO2014075658A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3578755A1 (de) | 2018-06-04 | 2019-12-11 | Entecnia Consulting, S.L.U. | Drehmaschine |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014207023B3 (de) * | 2014-04-11 | 2015-07-30 | Magna Powertrain Hückeswagen GmbH | Kraftfahrzeug-Vakuumpumpe mit Verklebung |
CN105464981B (zh) * | 2016-01-19 | 2017-07-07 | 浙江万安泵业有限公司 | 一种双作用真空泵 |
JP6839923B2 (ja) * | 2016-03-11 | 2021-03-10 | 三菱重工サーマルシステムズ株式会社 | 車載装置および電動圧縮機 |
JP7197329B2 (ja) * | 2018-11-06 | 2022-12-27 | 株式会社ミクニ | バキュームポンプ |
CN109915378A (zh) * | 2019-04-09 | 2019-06-21 | 重庆建设车用空调器有限责任公司 | 一种旋叶式空调压缩机壳体结构 |
CN113982946B (zh) * | 2021-10-28 | 2023-02-21 | 广东美芝制冷设备有限公司 | 压缩机和制冷设备 |
US20230304510A1 (en) * | 2022-03-25 | 2023-09-28 | Guardair Corp. | Multistage vacuum |
USD973105S1 (en) | 2022-06-02 | 2022-12-20 | Joe R. Granatelli | Automobile vacuum pump canister |
GB2622602A (en) * | 2022-09-22 | 2024-03-27 | Edwards Ltd | Sealing gasket |
Citations (7)
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DE19936644A1 (de) | 1999-08-04 | 2001-02-15 | Hella Kg Hueck & Co | Elektrische Luftpumpe für Kraftfahrzeuge |
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2013
- 2013-10-25 DE DE112013005506.6T patent/DE112013005506A5/de not_active Ceased
- 2013-10-25 US US14/442,833 patent/US20160201671A1/en not_active Abandoned
- 2013-10-25 WO PCT/DE2013/100368 patent/WO2014075658A2/de active Application Filing
- 2013-10-25 CN CN201380060414.7A patent/CN104968943B/zh active Active
- 2013-10-25 KR KR1020157012643A patent/KR20150070321A/ko not_active Application Discontinuation
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Publication number | Priority date | Publication date | Assignee | Title |
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US4781545A (en) | 1985-09-30 | 1988-11-01 | Kabushiki Kaisha Toshiba | Rotary compressor with sound suppression tubular cavity section |
DE19936644A1 (de) | 1999-08-04 | 2001-02-15 | Hella Kg Hueck & Co | Elektrische Luftpumpe für Kraftfahrzeuge |
WO2004074687A2 (de) | 2003-02-20 | 2004-09-02 | Luk Automobiltechnik Gmbh & Co. Kg | Vakuumpumpe mit einem kunststoffflügel |
US20040170516A1 (en) | 2003-02-28 | 2004-09-02 | Hinchey Ronald R. | Rotary vane pump with multiple sound dampened inlet ports |
US20110171041A1 (en) | 2008-09-20 | 2011-07-14 | Bing Zhao | Vacuum Pump |
DE102009056010A1 (de) | 2009-11-26 | 2011-06-01 | Hella Kgaa Hueck & Co. | Flügelzellenpumpe |
WO2011134448A2 (de) | 2010-04-26 | 2011-11-03 | Ixetic Hückeswagen Gmbh | Vakuumpumpe |
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EP3578755A1 (de) | 2018-06-04 | 2019-12-11 | Entecnia Consulting, S.L.U. | Drehmaschine |
Also Published As
Publication number | Publication date |
---|---|
US20160201671A1 (en) | 2016-07-14 |
DE112013005506A5 (de) | 2015-12-31 |
WO2014075658A3 (de) | 2014-12-04 |
CN104968943A (zh) | 2015-10-07 |
CN104968943B (zh) | 2017-07-04 |
KR20150070321A (ko) | 2015-06-24 |
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