WO2010025800A2 - Rotor für eine pumpe - Google Patents
Rotor für eine pumpe Download PDFInfo
- Publication number
- WO2010025800A2 WO2010025800A2 PCT/EP2009/005612 EP2009005612W WO2010025800A2 WO 2010025800 A2 WO2010025800 A2 WO 2010025800A2 EP 2009005612 W EP2009005612 W EP 2009005612W WO 2010025800 A2 WO2010025800 A2 WO 2010025800A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- recess
- clamping
- coupling
- rotor according
- 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.)
- Ceased
Links
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
- 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
- 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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- 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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
Definitions
- the invention relates to a rotor for a pump, in particular a vacuum pump, with a bearing portion and a wing receiving portion.
- the rotor is made, for example, by sintering.
- the sintered blank is machined after sintering.
- the object of the invention is to provide a rotor for a pump, in particular a vacuum pump, with a bearing portion and a wing receiving portion, which is simple in construction and inexpensive to produce.
- the object is in a rotor for a pump, in particular a vacuum pump, with a bearing portion and a wing receiving portion, achieved in that the rotor in the axial extension of a functional recess, such as a Kupplungsausneh- tion or a wing slot, a clamping recess.
- the rotor is preferably designed as a sintered rotor.
- a preferably sintered blank is machined after sintering. For machining, the blank must be clamped.
- the clamping recess according to the invention simplifies the machining of the blank considerably.
- unwanted damage to the preferably hardened surface of the coupling recess can be avoided by the clamping tool.
- the displacement of the clamping recess in the axial direction farther toward the center of the rotor provides the advantage that during machining by cutting forces, gently and occurring at the clamping point forces and / or moments can be reduced. As a result, the load on the rotor at the mounting point is significantly reduced.
- a preferred embodiment of the rotor is characterized in that the clamping recess, at least partially, has substantially the shape of a straight circular cylinder.
- the longitudinal axis of the circular cylinder coincides with the longitudinal axis or axis of rotation of the rotor in the installed state.
- the terms axial and radial in the context of the present text refer to the longitudinal axis or axis of rotation of the rotor.
- Axial means in the direction or parallel to the axis of rotation.
- Radial means transverse to the axis of rotation.
- the clamping recess can be designed as a blind hole or as a through hole.
- a further preferred embodiment of the rotor is characterized in that the clamping recess is arranged radially within the bearing portion in the axial extension of a coupling recess.
- the coupling recess serves to receive a coupling element which is used to non-rotatably connect the rotor to a drive shaft.
- the bearing portion serves to rotatably support the rotor in a housing portion of a pump housing of the pump.
- the clamping recess has a smaller diameter than the coupling recess.
- the stability and / or strength of the rotor is increased at the mounting point.
- the clamping recess may also have the same diameter as the coupling recess.
- a further preferred embodiment of the rotor is characterized in that the clamping recess has a central blind hole towards the wing receiving section.
- the central blind hole is preferably used to receive one end of a retaining pin, by means of which the coupling element is held in the axial direction on the rotor or in the coupling recess.
- a further preferred embodiment of the rotor is characterized in that the rotor radially outside the coupling recess for receiving at least one fastening element has an annular groove which is interrupted by the coupling recess is.
- the coupling element has in the radial direction at least one extension which is gripped by the fastening element, at least partially, in order to hold the coupling element in the axial direction in the coupling recess.
- the extension of the fastening element preferably extends in the radial direction.
- a further preferred embodiment of the rotor is characterized in that a fastening element which is frictionally connected to the clamping recess or connected, extends through a coupling element which is received in the coupling recess.
- the fastening element is preferably designed resiliently and may be deformable or deformed at its protruding from the coupling element end so that the coupling element is held by the fastening element in the axial direction in the coupling recess or on the rotor.
- a further preferred embodiment of the rotor is characterized in that the clamping recess is arranged in the axial extension of a wing slot and / or the wing receiving portion.
- the wing slot serves to receive a wing.
- the area of the vane slot is rather unsuitable for clamping the rotor, since the vane slot could expand in the machining of the rotor due to forces and / or moments caused by cutting forces and occurring at the mounting point.
- Another preferred embodiment of the rotor is characterized in that the diameter of the clamping recess is greater than the width of the wing slot.
- the diameter of the clamping recess may also be smaller than the width of the wing slot.
- a further preferred embodiment of the rotor is characterized in that the rotor is designed as a sintered part, which is machined after sintering. During machining, functional surfaces of the rotor, such as, for example, bearing diameter, running diameter or vane slot, are brought to a desired dimension, preferably by turning.
- Figure 1 shows a rotor according to a first embodiment in longitudinal section
- FIG. 2 shows a rotor according to a second embodiment in perspective
- Figure 3 shows the rotor of Figure 2 in longitudinal section
- FIG. 4 shows the rotor from FIG. 3 in a side view from the left
- Figure 5 shows a rotor according to a third embodiment in longitudinal section
- Figure 6 is a perspective view of the rotor of Figure 5;
- FIG. 7 shows a rotor according to a fourth embodiment in longitudinal section
- Figure 8 shows the rotor of Figure 7 in a side view from the left.
- each a rotor 1; 21; 31; 51 shown in various views and sections according to various embodiments.
- the same or similar parts are provided with the same reference numerals.
- the rotor 1; 21; 31; 51 is part of a vacuum pump, in particular a vane pump, which for example serves to generate a vacuum in a vacuum chamber of a brake booster.
- the rotor 1; 21; 31; 51 has a longitudinal axis 2, which preferably coincides with the axis of rotation of the rotor in the installed state.
- 51 is driven via a drive shaft and carries a vane rotatably disposed within a cam ring having a stroke contour.
- the rotor 1; 21; 31; 51 includes a rotor main body 3 having a bearing portion 4 and a wing receiving portion 5.
- the bearing portion 4 serves to support the rotor 1; 21; 31; 51 rotatably in a (not shown) housing the pump, in particular the vane pump or vacuum pump to store.
- the wing receiving portion 5 is integrally connected to the bearing portion 4 and, like the bearing portion 4, has substantially the shape of a right circular cylinder having a larger outer diameter than the bearing portion 4.
- the bearing portion 4 comprises a circumferentially extending lubrication groove 6 which serves to supply the bearing portion 4 with lubricant. For this purpose, transverse bores from the interior of the rotor can open into the lubrication groove 6.
- the rotor 1; 21; 31 a Kupplungsausneh- tion 8, which serves to receive a coupling element 10.
- the coupling element 10 is positively received in the coupling recess 8.
- a part of the coupling element 10 protrudes from the coupling recess 8 and is provided with a form-fitting geometry 12 which serves to connect the coupling element 10 in a rotationally fixed manner to a drive shaft (not shown), which is provided with a slot for this purpose, for example.
- the coupling element 10 can be substantially cross-shaped, with a transverse bar of the cross being accommodated in the coupling recess 8.
- the other crossbar of the cross represents the form-fitting geometry 12.
- the rotors 1; 21; 31 in each case in the axial extension of the coupling recess 8, a clamping recess 14 which, for clamping the rotor 1; 21; 31 serves on a corresponding clamping tool.
- the clamping recess 14 has substantially the shape of a straight circular cylinder whose longitudinal axis coincides with the longitudinal axis 2 of the rotor.
- a cylindrical receiving surface is provided in Figures 1 and 5 below and in Figure 3 right of an axial clutch contact surface, which is provided in addition to the coupling recess 8 and at machining a blank, in particular a Sinterrohteils, serves to position this on a cutting machine, in particular a lathe.
- the additional clamping recess 14 allows the use of a simple clamping tool and also simplifies the centering of the rotor 1; 21; 31 during machining.
- the clamping surface that is the circular cylindrical surface of the clamping recess 14, is displaced in the axial direction to the center of the rotor.
- the diameter of the clamping recess 14 is preferably smaller than the corresponding extent of the coupling recess 8 in the radial direction. This results in a larger wall thickness of the rotor 1; 21; 31 in the area of the clamping, so that the rotor can withstand larger clamping forces.
- the clamping surface in the clamping recess 14 is not so strongly influenced by a possible hardening of the coupling recess 8 and thus less brittle.
- the axial clutch contact surface 18 can continue to be used as an axial stop.
- the additional clamping recess 14 leads to a saving of material.
- the clamping recess 14 has a central blind hole 15 which serves to receive one end of a retaining pin 16.
- the retaining pin 16 extends through the clamping recess 14 and serves to keep the coupling element 10 in its installed position in the axial direction.
- one end of the retaining pin 16 is pressed or screwed into the blind hole 15.
- the other end of the retaining pin 16 has a fastening head 17, which prevents undesired falling out of the coupling element 10 from the coupling recess 8.
- the rotor main body 3 has a vane slot 22 which extends in the axial direction over the entire vane receiving section 5.
- the bearing section 4 is provided with an annular groove 24 which serves for the axial fixing of a fastening element 25 which is partially received in the annular groove 24.
- the fastening element 25 is preferably designed as a spring element with two ends 26 and 27, which partially surround a radial extension 28 of the coupling element 10.
- the fastening element 25 may be formed, for example, from a wire ring and serves, as the retaining pin 16 in Figure 1, preferably as a transport lock for the coupling element 10th
- the main body 3 has a vane slot 32, which likewise extends in the axial direction over the entire vane receiving section 5.
- the coupling element 10 includes, as in the embodiment shown in Figure 1, a central through hole 34 through which a fastener 35 extends therethrough.
- the fastening element 35 is formed in contrast to the retaining pin 16 in Figure 1 of an elastically deformable material.
- a fastening head 36 is formed, which is non-positively connected to the clamping recess 14.
- spring arms 37, 38 extend through the through hole 34 of the coupling element 10 therethrough.
- the free ends 39 of the spring arms 37, 38 are designed so that they reliably prevent unwanted release of the coupling element 10 from the coupling recess 8.
- FIGS. 7 and 8 show a rotor 51 with a rotor longitudinal axis 2 in different views.
- the rotor 51 comprises, as in the preceding embodiments, a rotor main body 3 with a bearing portion 4 and a wing receiving portion 5.
- the bearing portion 4 is provided with a lubricating groove 6.
- the rotor 51 does not comprise a coupling recess at its end facing the drive shaft.
- the rotor 51 shown in FIGS. 7 and 8 has, at its end facing the drive shaft, a coupling element 54 in the form of a double salmon 55, which is connected in one piece with the rotor base body 3.
- the two-flat 55 comprises a central blind hole 56, which is preferably produced during sintering and subsequently machined by machining.
- the central blind hole 56 serves to receive a fastening element with the aid of which a further coupling element, preferably a so-called Oldham coupling, can be held at the associated end of the rotor base body 3.
- a shoulder with an axial contact surface 58 is provided on the rotor base body 3. Radially within the axial bearing surface 58, a recess 59 is provided in the manner of an undercut, which simplifies a machining of the axial abutment surface 58.
- the rotor 51 comprises a vane slot 62 which extends over the entire axial extent of the vane receiving portion 5.
- a clamping recess 64 is provided in the axial extension of the vane slot 62 and radially inside the bearing section 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112009001966T DE112009001966A5 (de) | 2008-09-05 | 2009-08-04 | Rotor für eine Pumpe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008046572.0 | 2008-09-05 | ||
| DE102008046572 | 2008-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2010025800A2 true WO2010025800A2 (de) | 2010-03-11 |
| WO2010025800A3 WO2010025800A3 (de) | 2010-10-07 |
Family
ID=41797577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/005612 Ceased WO2010025800A2 (de) | 2008-09-05 | 2009-08-04 | Rotor für eine pumpe |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE112009001966A5 (de) |
| WO (1) | WO2010025800A2 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2746532A1 (de) * | 2012-12-19 | 2014-06-25 | Pierburg Pump Technology GmbH | Rotoranordnung für eine Vakuumpumpe sowie Vakuumpumpe mit einer derartigen Rotoranordnung |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1616099B1 (de) * | 2003-06-30 | 2007-08-08 | Mahle Motorkomponenten Schweiz AG | Rotor aus sintermetall einer drehkolbenpumpe |
| DE502005006726D1 (de) * | 2004-10-22 | 2009-04-09 | Ixetic Hueckeswagen Gmbh | Pumpe |
| EP1886025B1 (de) * | 2005-05-19 | 2012-03-07 | ixetic Hückeswagen GmbH | Flügelzellenpumpe |
-
2009
- 2009-08-04 WO PCT/EP2009/005612 patent/WO2010025800A2/de not_active Ceased
- 2009-08-04 DE DE112009001966T patent/DE112009001966A5/de not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2746532A1 (de) * | 2012-12-19 | 2014-06-25 | Pierburg Pump Technology GmbH | Rotoranordnung für eine Vakuumpumpe sowie Vakuumpumpe mit einer derartigen Rotoranordnung |
| EP2746532B1 (de) | 2012-12-19 | 2018-02-14 | Pierburg Pump Technology GmbH | Rotoranordnung für eine Vakuumpumpe sowie Vakuumpumpe mit einer derartigen Rotoranordnung |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010025800A3 (de) | 2010-10-07 |
| DE112009001966A5 (de) | 2011-07-14 |
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