EP3574215A1 - Pumpenvorrichtung - Google Patents
PumpenvorrichtungInfo
- Publication number
- EP3574215A1 EP3574215A1 EP18731795.3A EP18731795A EP3574215A1 EP 3574215 A1 EP3574215 A1 EP 3574215A1 EP 18731795 A EP18731795 A EP 18731795A EP 3574215 A1 EP3574215 A1 EP 3574215A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- pump ring
- clamping member
- eccentric
- ring
- 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.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000008719 thickening Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 230000007704 transition Effects 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/123—Machines, pumps, or pumping installations having flexible working members having peristaltic action using an excenter as the squeezing element
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
-
- 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
- F01C5/00—Rotary-piston machines or engines with the working-chamber walls at least partly resiliently deformable
- F01C5/02—Rotary-piston machines or engines with the working-chamber walls at least partly resiliently deformable the resiliently-deformable wall being part of the inner member, e.g. of a rotary piston
-
- 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
- F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
-
- 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
- F04C2210/00—Fluid
- F04C2210/10—Fluid working
- F04C2210/1083—Urea
-
- 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
- F04C2240/30—Casings or housings
Definitions
- the invention relates to a pump device for pumping a liquid.
- a pump device or pump is understood here to mean a working machine which serves to convey liquids. This also applies
- Liquid-solid mixtures, pastes and low-gas liquids During operation of the pump device, the drive work is converted into the kinetic energy of the transported liquid.
- the pump device shown is also referred to as orbital pump, rotary diaphragm pump or peristaltic pump.
- the pump device can be used to direct a liquid from a reservoir, for example a tank, into a desired environment, for example into an exhaust tract of an internal combustion engine.
- a pump device which is designed as an orbital pump, which has a pump housing with at least one inlet and at least one outlet, wherein on the
- an eccentric is arranged rotatably relative to the pump housing.
- an electric drive is provided between the eccentric and the pump housing.
- a deformable membrane which, together with the pump housing, delimits a delivery path from the at least one inlet to the at least one outlet and forms at least one seal of the delivery path.
- the at least one seal is displaceable by a movement of the eccentric for conveying along the conveying path.
- WO 2012/126544 A1 describes a metering system for metering a liquid with a pump device which has an eccentric drive which can be driven by an electric motor.
- Has conveying directions has a pump ring and a stationary ring, the is arranged relative to the pump ring and the eccentric drive so that between the stationary ring and the pump ring, a pump chamber is formed which changes its shape upon rotation of the electric motor to convey a liquid to be metered through the pump chamber.
- the document describes the operating principle of an orbital pump.
- the invention relates to a pump device for pumping a fluid, comprising a hydraulic housing which comprises an annular section, a pump ring which is deformable and defines an annular pump chamber at least in regions, a pump ring carrier which is fixedly connected to the pump ring, a first connection and a pump housing second port, wherein the first port and the second port are in fluid communication with the pump chamber, an eccentric to be driven by a shaft defining an axial and a radial direction so that the eccentric is rotatable relative to the hydraulic housing, wherein the Eccentric is arranged in the pump device such that the eccentric in response to a current rotational position of the eccentric the
- Hydraulic housing to press The presented pump device is set up such that by at least one measure a stop position of the eccentric is influenced so that it is preferred in the region of the clamping member.
- This measure is selected from: a) at least one recess in the hydraulic housing, which expands the space for the pump ring in the axial direction locally in the clamping member area, b) a geometry of the pump ring carrier which is such that the
- the eccentric associated side in the angular range of the clamping member has an enlarged diameter
- a geometric design of the pump ring which provides in the non-installed state of the pump ring in an area at least a reduced thickness of the pump ring, said area in the built-in Condition of the pump ring is located in the clamping member area, so that in the clamping member area a reduced axial compression of the
- the presented pump device is thus adapted to the effect that the positioning of the eccentric is influenced after stopping and thus a preferred parking position can be achieved by one or more of the measures mentioned.
- the preferred parking position is taken when the eccentric is in the region of the clamping member, d. H. the eccentric portion of the eccentric points in the direction of the clamping member area.
- This parking position avoids the disadvantages mentioned and also has the advantage that the eccentric can be moved from this easier when starting.
- Measure b causes that due to the enlarged diameter of the pump ring carrier in the angular range of the clamping member of the eccentric is to be rotated in this area with less effort.
- the measure c causes by the geometric design of the
- Clamping member area results, so that it can be compressed more easily in this area.
- the pumping chamber which is in fluid communication with the first port and the second port, is typically formed between the pumping chamber and the annular portion.
- the pump chamber in which the fluid to be conveyed moves between the pump chamber
- Pump ring and the annular portion of the pump device is formed so that a movement of the pump ring or a region-wise compression of the pump ring, the pump chamber partially closes and the fluid is transported from the respective compressed area and, thereby, moves through the pump chamber.
- the clamping member is designed in an embodiment to press at least a portion of the pump ring in the clamping member region between the first port and the second connection statically against the annular portion and, due thereto, a fluid flow between the first port and the second port via the clamping member region reduce or prevent it.
- the measure a provides that the at least one recess in the hydraulic housing is designed like a step.
- the recess in the hydraulic housing is formed continuously. This means that, viewed in section, the recess can have a step-like outline or a step-like contour or a continuous outline or a continuous contour. Of course, other contours or contours, in particular combinations of stepped and continuous
- measure a can provide that the at least one recess is provided in a convex region of the hydraulic housing.
- the measure provides a, that two recesses are provided, which are provided opposite in the axial direction in the hydraulic housing.
- the pump ring extends axially opposite in the two recesses and can be particularly easily compressed.
- the measure b may additionally provide that the pump ring carrier on its outer, facing away from the eccentric side in the angular range of the clamping member has an enlarged diameter.
- enlarged diameter of the pump ring carrier at the inner side of the eccentric associated side in the angular range of the clamping member allows a simplified production of the pump ring carrier. In this case, make sure that the pump ring in the clamping member area should also have a reduced thickness.
- the measure c provides that the Pumpennng is designed such that it has an asymmetric thickening in the uninstalled state.
- the pump ring carrier recess can influence the rigidity of the pump ring or of the entire system in the clamping member region. This allows the eccentric to better engage the
- Clamping member area can be turned over.
- Pump ring in a range provides a reduced thickness of the pump ring, this area in the installed state of the pump ring in Clamping member region is located, so that there is a reduced axial compression of the pump ring in the clamping member area.
- This pump ring may have an asymmetrical thickening.
- 1 is a sectional view of a pump device
- FIG. 2 shows a side view of the pump device of FIG. 1, FIG.
- FIG. 3 is a sectional view of the pump device of Fig. 1,
- Fig. 4 shows a portion of a hydraulic housing with a recess.
- Fig. 5 shows an embodiment of a pump ring carrier.
- Fig. 6 shows an embodiment of a pump ring in a sectional view.
- Fig. 7 shows a pump arrangement to illustrate different
- Figures 1 to 3 are primarily shown to illustrate the operation of a pumping device of the type described, without going into detail about the particular features of the pumping device presented herein.
- Fig. 1 shows in a sectional view of a pump device, which is generally designated by the reference numeral 10 and designed as an orbital pump.
- the illustration shows a hydraulic housing 12, a pump ring 14, a pump ring carrier 16, an eccentric 18, a shaft 20, a drive 140, a first bearing 1 10, a second bearing 1 18, a bushing 1 12, which also serves as a ring 1 12th may be referred to, a clamping member 1 14, which may also be referred to as Trennhuntpin, an eccentric bearing 16, and a sealing ring 120, which may also be referred to as a sealing disc 120.
- the first bearing 1 10 is mounted in this embodiment as a floating bearing, and the second bearing 1 18 as a fixed bearing. This results in a good storage.
- eccentric bearing 1 16 a needle bearing can be used. This has a small extent in the radial direction. There are also other types of bearings such as bearings possible.
- the eccentric bearing 1 16 allows a
- the hydraulic housing 12 includes an annular portion 22 and a first lateral portion 24, which may also be referred to as a pump cover, and a second lateral portion 26, which also serves as a motor flange or
- the two lateral sections 24, 26 are arranged opposite one another.
- the pump ring 14 is at least partially between the two side portions 24, 26 of the hydraulic housing 12.
- the annular portion 22 has a first collar 74 and a second collar 75th
- the drive 140 has a stator assembly 145 and a rotor assembly 146.
- the driver 140 is partially attached to a tubular portion 170 of the second lateral portion 26
- the pump housing 12 has a locking member 27 which is adapted to lock during insertion of the clamping member 1 14 in the pump housing 12 and the clamping member 1 14 axially secure. The insertion of the clamping member 1 14 can be done prior to assembly of the drive 140.
- the pump ring 14 is deformable and may be formed of an elastomeric material or other deformable material.
- FIG. 2 shows a side view of the pump device 10 of FIG. 1.
- FIG. 3 shows a cross-section through the pump device 10, as seen along the section line III - III of FIG. 2.
- a first port 51 and a second port 52 are provided, and these ports 51, 52 are in fluid communication with a pumping chamber 57 between the annular portion 22 of the
- Hydraulic housing and a running surface 46 of the pump ring is formed and annular in the illustration of FIG. 3 from the first port 51 in
- the pump chamber 57 is deactivated in the portion extending from the first port 51 counterclockwise to the second port 52, by the clamping member 114 by the
- Clamping member 1 14 14 presses the tread 46 of the pump ring 14 statically against the annular portion 22 of the hydraulic housing 12 and thereby prevents fluid flow through this section or at least greatly reduced.
- the region in which the clamping member 1 14 presses the running surface 46 of the pump ring 14 against the annular portion 22 is also referred to below as the clamping member region 45.
- the operation of the orbital pump is described below with reference to FIGS. 1 and 3.
- the eccentric 18 sits on the shaft 20 and is driven by this.
- the shaft 20 serves the drive 140, typically a motor or electric motor.
- a controllable drive 140 is provided as drive 140.
- the shaft 20 is thereby rotated about its longitudinal axis 21, which defines an axial direction of the pump device 10.
- the eccentric 18 is thus also moved in a rotational movement about the longitudinal axis of the shaft 20.
- This movement of the eccentric 18 is transmitted via the bearing 1 16 and the pump ring carrier 16 to the pump ring 14.
- the pump ring carrier 16 and the pump ring 14 are rotationally fixed relative to the hydraulic housing 12, but they are locally moved closer to the annular portion 22 or further depending on the rotational position of the eccentric 18.
- the eccentric 18 in a direction indicated by an arrow 19 direction, in the example shown in the direction 9 o'clock, d. H. the area of the eccentric 18 with the greatest radial extent points in the direction of the arrow 19.
- the pump ring 14 is moved in this direction 9 and is pressed in the area 58 against the annular portion 22.
- the pump channel 57 is reduced in area 58 or completely blocked.
- the pump device 10 also works in the reverse direction by the direction of rotation of the eccentric 18 is reversed.
- FIG. 4 shows a section of a hydraulic housing 200 with a recess 202, which is formed in a convex region 204 of the hydraulic housing 200.
- a recess 202 is formed in a convex region 204 of the hydraulic housing 200.
- This recess may be provided in steps and / or as a smooth transition.
- Fig. 5 shows an embodiment of a pump ring carrier, which is generally designated by the reference numeral 300, in a plan view.
- the figures in the illustration are given by way of example only and are not restrictive in any way.
- a recess is circumferentially provided in the side wall, which is not visible in this illustration and in the
- the illustration also shows a pump ring carrier recess 302 in FIG.
- Angular range of the clamping member has an enlarged diameter 304, which is, for example. In the range of 1/10 mm, resulting in an out-of-roundness. Due to the out-of-roundness in the direction of the clamping member, there is less mechanical stress in that direction than in the others. This makes it easier for the eccentric to park in the 0 ° position.
- FIG. 6 shows a sectional view of an embodiment of a pump ring, which is designated overall by the reference numeral 400.
- This has a thickening in a region 402, which is illustrated by arrows 404 and dashed lines 406.
- this area which includes, for example, the entire circumferential region of the pump ring 400 except for the clamping member area, there is thus an increased thickness. This in turn results in a reduced thickness of the pump ring in the
- the measures a b, c favor each alone or in any combination a rotational position of the eccentric in the zero position, ie for
- Clamping member 114 since the pump ring 14 can be easily moved in this area by the distance 48 to the clamping member 1 14 out.
- the zero position as a parking position is advantageous because in the other positions the risk is greater that a torque is exerted on the eccentric from the pressure difference between outlet and inlet, which leads to a rotation of the eccentric 18, if it is not rotated by the shaft 20 (FIG. see Fig. 1) is held.
- Fig. 7 shows a Schamtician representation of a pump device 500, of which an eccentric 502, a pump ring carrier 504, a pump ring 506 and a
- Hydraulic housing 508 Hydraulic housing 508 are shown.
- An arrow 510 illustrates the rotational movement of the eccentric. In the representation are different rotational positions of the
- Exzenters 502 namely 0 °, 90 °, 180 ° and 270 ° displayed. These are possible rotational positions and thus also parking positions of the eccentric 502. By means of said measures, a parking position of the eccentric 502 of 0 ° is to be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017116468.5A DE102017116468A1 (de) | 2017-07-21 | 2017-07-21 | Pumpenvorrichtung |
PCT/EP2018/065501 WO2019015883A1 (de) | 2017-07-21 | 2018-06-12 | Pumpenvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3574215A1 true EP3574215A1 (de) | 2019-12-04 |
Family
ID=62631084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18731795.3A Withdrawn EP3574215A1 (de) | 2017-07-21 | 2018-06-12 | Pumpenvorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US11306710B2 (de) |
EP (1) | EP3574215A1 (de) |
CN (1) | CN208966534U (de) |
DE (2) | DE102017116468A1 (de) |
WO (1) | WO2019015883A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2544628A (en) * | 1946-06-15 | 1951-03-06 | Coca Cola Co | Peristaltic pump |
US3408947A (en) * | 1967-03-14 | 1968-11-05 | William J Easton Jr | Diaphragm pump with single compression roller |
US4332534A (en) * | 1978-12-14 | 1982-06-01 | Erich Becker | Membrane pump with tiltable rolling piston pressing the membrane |
DE3815252A1 (de) * | 1988-05-05 | 1989-11-16 | Knf Neuberger Gmbh | Ringmembranpumpe |
DE102011015110B3 (de) * | 2011-03-19 | 2012-01-26 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Dosiersystem |
DE102013104245A1 (de) | 2013-04-26 | 2014-10-30 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren zum Betrieb einer Vorrichtung zur dosierten Bereitstellung einer Flüssigkeit |
US10072547B2 (en) * | 2014-03-19 | 2018-09-11 | Continental Automotive Gmbh | Pump for conveying a fluid, in particular for conveying an exhaust gas cleaning additive |
CN106068367B (zh) * | 2014-03-19 | 2018-11-13 | 大陆汽车有限公司 | 用于输送液体、尤其是废气净化添加剂的泵以及机动车 |
DE102014112391A1 (de) * | 2014-08-28 | 2016-03-03 | Continental Automotive Gmbh | Pumpe zur Förderung einer Flüssigkeit, insbesondere zur Förderung eines Abgasreinigungsadditivs |
DE102015106613A1 (de) | 2015-04-29 | 2016-11-03 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Pumpenvorrichtung |
DE102015106610A1 (de) * | 2015-04-29 | 2016-11-17 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Pumpenvorrichtung |
DE102016117802A1 (de) * | 2016-09-21 | 2018-03-22 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Pumpenvorrichtung |
-
2017
- 2017-07-21 DE DE102017116468.5A patent/DE102017116468A1/de not_active Withdrawn
-
2018
- 2018-06-12 EP EP18731795.3A patent/EP3574215A1/de not_active Withdrawn
- 2018-06-12 WO PCT/EP2018/065501 patent/WO2019015883A1/de unknown
- 2018-06-12 US US16/624,435 patent/US11306710B2/en active Active
- 2018-07-05 DE DE202018103845.1U patent/DE202018103845U1/de active Active
- 2018-07-19 CN CN201821145899.6U patent/CN208966534U/zh active Active
Also Published As
Publication number | Publication date |
---|---|
US11306710B2 (en) | 2022-04-19 |
DE202018103845U1 (de) | 2018-07-16 |
DE102017116468A1 (de) | 2019-01-24 |
CN208966534U (zh) | 2019-06-11 |
US20200132065A1 (en) | 2020-04-30 |
WO2019015883A1 (de) | 2019-01-24 |
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Inventor name: GHODSI-KHAMENEH, HASSAN Inventor name: BRAXMAIER, MARKUS Inventor name: HAUER, DANIEL Inventor name: LAUFER, WOLFGANG |
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