EP3580455A1 - Ölfreie vakuumpumpe mit prismatischem kolben und dementsprechender kompressor - Google Patents
Ölfreie vakuumpumpe mit prismatischem kolben und dementsprechender kompressorInfo
- Publication number
- EP3580455A1 EP3580455A1 EP17822592.6A EP17822592A EP3580455A1 EP 3580455 A1 EP3580455 A1 EP 3580455A1 EP 17822592 A EP17822592 A EP 17822592A EP 3580455 A1 EP3580455 A1 EP 3580455A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil
- vacuum pump
- outlet
- free vacuum
- shaft
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 38
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 238000013016 damping Methods 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010327 methods by industry Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B27/0404—Details, component parts specially adapted for such pumps
- F04B27/0409—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/047—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being pin-and-slot mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/12—Kind or type gaseous, i.e. compressible
Definitions
- the present invention relates to an oil-free vacuum pump with a prismatic piston and a similar device for use as an oil-free running compressor.
- Vacuum pumps are used in numerous application areas of pneumatics in process engineering processes or in vehicle construction. In the automotive sector, for example, they are required to adjust exhaust flaps, vanes on turbochargers with variable turbine geometry or a bypass for boost pressure control with a wastegate. You can also take over the function to operate a central locking or headlight flaps.
- Vane pumps In vehicle construction, predominantly rotary positive displacement pumps, such as vane pumps or rotary vane pumps, are used. Vane pumps made of metallic materials require the provision of a lubricating film between the rotating and stationary pump components in order to ensure a sufficiently gas-tight seal and a low frictional wear on the contact surfaces. Thus, for such vane pumps on the vehicle side, a lubricant supply or an integration into a circuit of a lubricant-carrying system must be provided.
- double-stroke positive displacement pumps with oscillating components are known in the field of process engineering, and these require little lubricant at low coefficients of friction.
- a prismatic shape instead of a cylindrical shape of the piston has been found to be advantageous, creating a lower punctual load on a piston track is achieved by means of an improved area distribution of transverse forces or tilting moments.
- Piston is described in US 5,556,267 B.
- the described Doppelhubpumpe is driven by an eccentric cam, which rotates in a sliding block, which in turn moves back and forth in a multi-part piston.
- the characteristic of a sliding block generally allows the conclusion that the drive can not be operated without a lubricating oil between piston, sliding block and eccentric cam.
- the piston is composed of several fits and parts whose sum complicates a realization of close running play in the cylinder bore and increases the complexity of manufacturing.
- an oil-free vacuum pump for the evacuation of gaseous media having the features of claim 1.
- This has an electric motor that drives a shaft; a pump housing having a pump chamber and an inlet and an outlet; a prismatic displacer, acting bidirectionally, on a reciprocal Working distance movable, is accommodated in the pump chamber, wherein the displacer exposes a connection between the inlet and the pump chamber in the range of two dead centers of the reciprocal working distance and covered in an intermediate region; and at least one pressure valve that releases a gaseous medium from the pump chamber through the outlet and blocks an inflow into the pump chamber; on.
- the piston may be formed integrally with the exception of the pressure valves as an integral body.
- the inlet pocket forms, at the dead points of the reciprocal working distance of the displacer piston, two control slots in a simple manner, which establish a connection from the inlet, past an edge of an inward displacing surface of the displacer piston into the pump chamber.
- the inlet pocket provides a larger flow area and an antechamber so that in the short Ansaugphasen at the dead center, there is a lower intake throttle or a larger intake volume can be implemented. As a result, the volumetric efficiency of the vacuum pump is increased.
- the crankpin may be connected via a turntable to the free end of the shaft.
- the design of a disc-shaped connection turbulence in the rotation region between the drive and pump assembly and an imbalance of the crank pin can be minimized.
- a rotor of the electric motor may be connected to a free end of the shaft.
- the shaft may be supported by means of a single shaft bearing with two rows of rolling elements.
- the electric motor may be arranged in axial overlap with the shaft bearing and a housing portion for receiving the shaft bearing. This embodiment also favors the achievement of a smaller overall axial dimension of the vacuum pump.
- the vacuum pump having the aforementioned features can also be used as an oil-free running compressor.
- the advantage of the construction according to the invention that no atomized lubricating oil is permanently discharged from the outlet provides, in particular, an advantage with regard to inserts, such as laboratory applications, in which a contamination-sensitive system is to be supplied with compressed air.
- FIG. 1 shows a cross-sectional view through the pump housing and the displacer with a plan view of the electric drive.
- Figure 2 is a cross-sectional view through the pump housing and the displacer in the opposite direction to Fig. 2.
- FIG. 3 shows a longitudinal sectional view through the inlet and the outlet with a plan view of a displacement surface of the displacement piston
- Fig. 4 is a longitudinal sectional view through the crankpin and the rolling bearing.
- Fig. 5 is a longitudinal sectional view through the outlet channel of the displacement piston and the outlet.
- a chamber wall 11 which occupies substantially the rectangular contour of the cross-sectional profile of the pump chamber 10.
- two nozzles are formed, through which an inlet 15 and an outlet 16 open into the pump chamber 10.
- the pump chamber 10 is closed by a housing part 13 to the drive assembly.
- the chamber wall 11, the pump housing 1 and the housing part 13 of the are screwed together.
- a motor housing 14 connects, in which an electric motor 4 is received.
- the electric motor 4 is substantially constituted by a stator 41 fixed in the motor housing 14 and a rotor 43 rotatably disposed radially inside the stator 41, which seats on and drives a shaft 3.
- the shaft 3 is connected via a double row shaft bearing 31, e.g. a water pump bearing, mounted in a central axial portion of the shaft 3.
- the shaft bearing 31 is received in the housing part 13.
- a receiving portion of the housing part 13, in which the shaft bearing 31 is fitted, extends both radially and axially within the rotor 43.
- the rotor 43 on one side of the shaft bearing 31 is fixed against rotation at a free end of the shaft 3, and an electric motor effective
- a shell portion of the rotor 43 which faces the stator 41 and includes permanent magnetic elements, extends both radially and axially beyond a portion of the shaft bearing 31.
- a circular carrier disk 30 is arranged rotationally fixed at the other free end of the shaft 3.
- On the support plate 30 is offset in axial extension to the shaft end and to the axis of rotation of the shaft 3, a crank pin 33 is arranged.
- the carrier disk 30 is rotatably received in a corresponding rotationally symmetrical recess of the housing part 13.
- crank grinding mechanism is formed via the crank pin 33 and the roller bearing 32, which engage in the elongated hole 23, which converts an eccentric drive movement into an alternating or reciprocal movement of the displacer piston 2.
- the rolling bearing 32 is a lubricated on its life bearings, by the rolling friction between the crank pin 33 and the slot 23, an introduction of the driving force on the displacer 2, without subsequent lubricant requirement is permanently and speed guaranteed.
- the pump housing 1 which comprises four walls of the pump chamber 10, is made as a casting or profile part or sintered part, the inner wall surfaces are also ground to a corresponding degree of a gap seal to form a gap seal in the piston raceway of the pump chamber 10.
- the chamber wall 11 including the nozzle for the inlet 15 and the outlet 16 and the housing part 13, which close the end face of the pump chamber 10 and form the piston race are made as a casting or sintered part and adjusted by a corresponding grinding treatment to the extent of a gap seal.
- the electric motor 4 may be configured as a reluctance motor.
- the rotor 43 has no permanent-magnetic elements but is made of a soft magnetic material such as a laminated sheet of electric sheet. Further, the cross-section of such a rotor has pole teeth and / or sectors with lamellar air-gap structures that produce an alternating magnetic permeability diametrically through the rotor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017102324.0A DE102017102324A1 (de) | 2017-02-07 | 2017-02-07 | Ölfreie Vakuumpumpe mit prismatischem Kolben und dementsprechender Kompressor |
PCT/EP2017/082202 WO2018145795A1 (de) | 2017-02-07 | 2017-12-11 | Ölfreie vakuumpumpe mit prismatischem kolben und dementsprechender kompressor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3580455A1 true EP3580455A1 (de) | 2019-12-18 |
EP3580455B1 EP3580455B1 (de) | 2020-11-18 |
Family
ID=60888375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17822592.6A Active EP3580455B1 (de) | 2017-02-07 | 2017-12-11 | Ölfreie vakuumpumpe mit prismatischem kolben und dementsprechender kompressor |
Country Status (7)
Country | Link |
---|---|
US (1) | US20200124036A1 (de) |
EP (1) | EP3580455B1 (de) |
JP (1) | JP6830159B2 (de) |
KR (1) | KR102193199B1 (de) |
CN (1) | CN110249130B (de) |
DE (1) | DE102017102324A1 (de) |
WO (1) | WO2018145795A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE1630113A1 (sv) * | 2016-07-20 | 2018-01-21 | Norlin Petrus | Pumpenhet samt kompressor utan ventil |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US333675A (en) | 1886-01-05 | Steam engine or pump | ||
US779900A (en) * | 1903-08-13 | 1905-01-10 | Simplex Engine Company | Rotary engine. |
GB417819A (en) | 1933-11-23 | 1934-10-12 | Fairey Aviat Co Ltd | Improvements in or relating to air compressors |
US2323068A (en) * | 1941-03-29 | 1943-06-29 | Maniscalco Pictro | Compressor |
US3238889A (en) | 1963-06-03 | 1966-03-08 | Aero Spray Inc | Piston drive mechanism |
US4174195A (en) * | 1974-11-14 | 1979-11-13 | Lassota Marek J | Rotary compressor and process of compressing compressible fluids |
JPH01257775A (ja) | 1988-04-06 | 1989-10-13 | Tomoe Suzuki | プランジャポンプのプランジャ駆動装置 |
US5556267A (en) | 1993-02-05 | 1996-09-17 | Hansen Engine Corporation | Double acting pump |
US5449278A (en) | 1994-11-14 | 1995-09-12 | Lin; Chi-So | Double action piston having plural annular check valves |
JPH0988875A (ja) * | 1995-09-26 | 1997-03-31 | Daikin Ind Ltd | ターボ分子ポンプ |
JP3789691B2 (ja) | 1999-09-14 | 2006-06-28 | 三洋電機株式会社 | 高圧圧縮機の圧縮装置 |
JP2001280234A (ja) * | 2000-03-30 | 2001-10-10 | Shibaura Mechatronics Corp | 対向式往復動ポンプ |
DE10318735A1 (de) * | 2003-04-25 | 2004-11-11 | Leybold Vakuum Gmbh | Kolbenvakuumpumpe |
US20090013681A1 (en) * | 2007-07-12 | 2009-01-15 | Courtright Geoffrey B | Energized Fluid Motor and Components |
DE102011076396A1 (de) * | 2011-05-24 | 2012-11-29 | Robert Bosch Gmbh | Kurbelschlaufenantrieb |
JP6449576B2 (ja) * | 2014-07-11 | 2019-01-09 | 国立大学法人 東京大学 | 容積型機械 |
KR101588746B1 (ko) * | 2014-09-05 | 2016-01-26 | 현대자동차 주식회사 | 하이브리드 컴프레서 |
US20170350476A1 (en) * | 2015-02-24 | 2017-12-07 | Illinois Tool Works Inc. | Compressor for discharging a medium |
-
2017
- 2017-02-07 DE DE102017102324.0A patent/DE102017102324A1/de not_active Ceased
- 2017-12-11 EP EP17822592.6A patent/EP3580455B1/de active Active
- 2017-12-11 CN CN201780085532.1A patent/CN110249130B/zh not_active Expired - Fee Related
- 2017-12-11 US US16/477,607 patent/US20200124036A1/en not_active Abandoned
- 2017-12-11 JP JP2019537777A patent/JP6830159B2/ja not_active Expired - Fee Related
- 2017-12-11 WO PCT/EP2017/082202 patent/WO2018145795A1/de unknown
- 2017-12-11 KR KR1020197023403A patent/KR102193199B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
JP6830159B2 (ja) | 2021-02-17 |
KR102193199B1 (ko) | 2020-12-21 |
CN110249130A (zh) | 2019-09-17 |
EP3580455B1 (de) | 2020-11-18 |
KR20190104203A (ko) | 2019-09-06 |
DE102017102324A1 (de) | 2018-08-09 |
CN110249130B (zh) | 2020-09-11 |
US20200124036A1 (en) | 2020-04-23 |
JP2020506321A (ja) | 2020-02-27 |
WO2018145795A1 (de) | 2018-08-16 |
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