WO2016037655A1 - Displacing device - Google Patents
Displacing device Download PDFInfo
- Publication number
- WO2016037655A1 WO2016037655A1 PCT/EP2014/069431 EP2014069431W WO2016037655A1 WO 2016037655 A1 WO2016037655 A1 WO 2016037655A1 EP 2014069431 W EP2014069431 W EP 2014069431W WO 2016037655 A1 WO2016037655 A1 WO 2016037655A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- crankshaft
- displacement
- groups
- offset
- Prior art date
Links
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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
- F04B1/0536—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units
- F04B1/0538—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units located side-by-side
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- 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
- F04B53/006—Crankshafts
-
- 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
- F04B9/045—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 eccentrics
Definitions
- the invention relates to a displacement device for fluids, in particular liquids, with displacers, which dive linearly in the displacer, namely in cylindrical see pump chambers in a pump housing, which are each via a suction valve and a pressure valve in flow communication, wherein the displacer each via a connecting rod are connected to crank pin of a foreign-driven crankshaft.
- crankpins for the displacement bodies are arranged at equal angular intervals ⁇ distributed around the crankshaft,
- crankshaft journals associated with one group are arranged offset from the crankshaft by an offset angle ⁇ to those of the other groups,
- the displacers of each group are arranged offset in the axial direction of the crankshaft to those of the remaining groups, and
- the group displacer are each arranged at a group offset angle ⁇ to each other about the crankshaft.
- a particularly compact construction can be achieved if two groups of displacement bodies are provided and the displacement bodies of one group are arranged alternately in the axial direction of the crankshaft with the displacement bodies of the other group.
- the displacer in V or Boxer arrangement.
- the two groups displacer are arranged in a boxer arrangement, wherein the group offset angle is 180 °, but may also be modified, for. B. may be 150 °.
- the stress on the crankshaft is minimized compared to a series arrangement with an odd number of displacers.
- each group has three displacers distributed in each case at an angular distance ⁇ of 120 ° around the crankshaft.
- an offset angle ⁇ of 30 ° of the crank pin associated with the first group leads to a particularly low pressure pulsation to those of the second group.
- a displacement device of the type described above in which a drive is provided with two opposite output shaft ends, to each of which a crank shaft of a positive displacement pump is coupled, which in each case has a group displacer,
- the two groups of displacement bodies have the same number of displacement bodies
- crankpins for the displacers of each group are offset at equal angular intervals ⁇ relative to each other about the associated crankshaft, and
- crankpins of one group are offset from those of the other group by an offset angle ⁇ about the associated crankshaft.
- Fig. La and lb the side view and end view of a crankshaft attached thereto two groups of three displacers in Boxer arrangement with a group offset angle ⁇ of 180 ° in a positive displacement pump according to the invention
- FIG. 2 shows the front view of a modified positive displacement pump according to FIG. 1a, but here with a group offset angle ⁇ of 150 °;
- FIG 3 shows the crankshaft according to the figures 1 or 2 without displacer in side view.
- Fig. 4 and 5 are two schematic representations of the crankpin assemblies of the crankshaft of Figure 2, and that
- FIG. 5 shows the crank pin arrangement of the second group of three displacement bodies rotated by an offset angle ⁇
- Fig. 6a, b and c examples of the crank pin positions of a positive displacement pump according to
- Figure la, lb and 2 in three different rotational positions of the crankshaft; 7 shows an arrangement according to the figures la and lb three superimposed diagrams in each case over a crank angle between 0 and 360 °, namely in the upper diagram six speed curves for the speed of the six displacer, in the middle diagram, the conveyor volumes and in the bottom diagram the pressure pulsations;
- Figure 8 is a perspective view of parts of another displacement device according to the invention with a common drive for two positive displacement pumps.
- FIG. 9 is a partial view of the displacement device according to FIG. 8.
- FIGS. 1a and 1b show, in a side view and an end view, a crankshaft 10 with two opposing groups A, B mounted thereon of displacers or plungers 1, 3, 5 (group A) and 2, 4, 6 (group B).
- the plungers of the group A are alternately arranged to those of the group B in the axial direction of the crankshaft, as can be seen from Fig. La.
- the groups A and B are arranged offset by a group offset angle ⁇ of 180 ° in a boxer arrangement to each other.
- the angle ⁇ is 180 ° according to FIGS. 1a and 1b, but may also deviate therefrom.
- crankshaft 10 and the plunger 1 to 6 form part of a positive displacement pump whose housings and other parts are not shown; However, it is understood that the plunger 1 to 6 in cylindrical pump chambers of conventional design are guided slidably and sealed, the pump chambers are connected via a respective suction valve and a pressure valve in flow connection to bring a fluid, for example water, to high pressures.
- 3 shows the crankshaft 10 alone. At its right in Fig. 3 end, it is provided with a drive pin 17, with which it can be coupled with an output shaft, not shown, of a drive, such as an electric motor. Further, it has two spaced bearing collars 18, 19, with which it is rotatably mounted in bearings, not shown, of the pump housing.
- crank pins 11 to 16 are arranged side by side in the axial direction.
- Reference numerals 1 to 6 for the Plunger not shown in Fig. 3 relate here to the assignment to the associated crank pin 11 to 16, so l to ll, 2 to l2, etc.
- At this crank pin plungers are 1 to 6 via connecting rods 20 in conventional Way connected by means of crossheads 21.
- the three crankpins 12, 14, 16 are shown in FIG. 5 relative to the crank pin 11, 13, 15 by an offset angle ß offset on the crankshaft.
- crank pins 11 to 16 are symbolized by circles, which, however, are drawn smaller here for the sake of simpler illustration than in FIGS. 4 and 5.
- all six crank pins are here each drawn in the three Fig. 6a, 6b and 6c to make the wake of the crank pin to the offset angle ß clear.
- a reference numeral 1 to 6 denoting the respective plunger is entered. Plungers with odd reference numbers 1, 3 or 5 belong to group A and feed upwards in Figs.
- plungers 2, 4 or 6 belong to group B and convey downwards.
- the square plunger symbol in the respective circle above or below the plunger reference number represents the direction of action of the plunger in question. Pressurized plungers are indicated by hatching. Plungers without hatching are in the suction stroke and are pressure-free.
- Plunger at top dead center OT or bottom dead center UT have the speed zero, thus crossing the crank angle axis x.
- begins or ends the funding process For example, the plunger 1 is at zero crank angle in the UT and begins to promote with increasing flow.
- the plunger 2 is at crank angle zero already in the delivery state with increasing flow.
- the P loungeer 3 is at top dead center OT and the speed curve g3 intersects the crank angle axis sloping, while plunger 2 reaches the maximum speed and promotes maximum.
- plunger 1 delivers maximum at maximum speed, while plunger 6 has reached 0 m / s in TDC, and so on.
- the curve f in the middle diagram of FIG. 7 shows the periodic oscillation of the delivery rate 1 / min achieved with a positive displacement pump according to FIGS. 1 to 5 between approximately 1550 1 / min and 1610 1 / min.
- the curve d in the lowest diagram of FIG. 7 shows the pressure pulsation of the delivered liquid, which fluctuates approximately between 375 bar minimum pressure and 400 bar maximum pressure. This represents a very low pressure pulsation, which is smaller than achievable with a conventional positive displacement pump with seven plungers in series.
- FIGS. 8 and 9 show an alternative displacement device, wherein FIG. 9 shows the right half of the device according to FIG. 8 in a side view corresponding to FIG.
- FIGS. 8 and 9 show an alternative displacement device, wherein FIG. 9 shows the right half of the device according to FIG. 8 in a side view corresponding to FIG.
- the same reference numerals as in FIGS. 1 to 6 are used in FIGS. 8 and 9.
- the displacement device has an electric motor 30 as a drive whose continuous output shaft (not visible) with their output shaft ends 34 are each coupled to a crankshaft 10 of its own positive displacement pump 31, 32.
- the result is a unit of a central drive 30 and thus aligned two positive displacement pumps 31, 32, which are mounted on the engine 30 flying.
- Each positive displacement pump has a plunger group A with three plungers arranged in series, namely group A with plungers 1, 3, 5 (left in FIG. 8) and group B with plungers 2, 4, 6 (to the right of the electric motor 30 in FIGS 9). All plungers 1, 3, 5 and 2, 4, 6 are each arranged in series and in a same vertical plane E.
- crankpins 11, 13, 15 of the crankshaft 10 of the group A are shown in FIG. 4 in the same plane E as the plunger 1, 3, 5 are arranged.
- each plunger group of an embodiment according to FIGS. 1 to 9 can also have more than three plungers for each group.
- There are also more than three crankpin arrangements evenly distributed about a common crankshaft, e.g. four crankpins, which are distributed at an angular distance of ⁇ 90 ° around the circumference of the crankshaft.
- the offset angle ⁇ can also be less than or greater than 30 °.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/509,379 US20170276123A1 (en) | 2014-09-11 | 2014-09-11 | Displacing device |
EP14762011.6A EP3060800B1 (en) | 2014-09-11 | 2014-09-11 | Displacing device |
CN201480081909.2A CN107076125A (en) | 2014-09-11 | 2014-09-11 | Gearshift |
BR112017004768A BR112017004768A2 (en) | 2014-09-11 | 2014-09-11 | displacement device |
CA2960908A CA2960908A1 (en) | 2014-09-11 | 2014-09-11 | Displacement device |
PCT/EP2014/069431 WO2016037655A1 (en) | 2014-09-11 | 2014-09-11 | Displacing device |
ES14762011.6T ES2687955T3 (en) | 2014-09-11 | 2014-09-11 | Travel device |
EP16207067.6A EP3181902A1 (en) | 2014-09-11 | 2014-09-11 | Displacement device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2014/069431 WO2016037655A1 (en) | 2014-09-11 | 2014-09-11 | Displacing device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016037655A1 true WO2016037655A1 (en) | 2016-03-17 |
Family
ID=51535441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/069431 WO2016037655A1 (en) | 2014-09-11 | 2014-09-11 | Displacing device |
Country Status (7)
Country | Link |
---|---|
US (1) | US20170276123A1 (en) |
EP (2) | EP3181902A1 (en) |
CN (1) | CN107076125A (en) |
BR (1) | BR112017004768A2 (en) |
CA (1) | CA2960908A1 (en) |
ES (1) | ES2687955T3 (en) |
WO (1) | WO2016037655A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4403764A1 (en) * | 2023-01-20 | 2024-07-24 | Danfoss Scotland Limited | Hydraulic machine |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE315794C (en) * | 1915-01-06 | 1919-11-13 | Giulio Silvestri | STAGE COMPRESSORS CONSISTING OF SIX AND MORE EVEN-NUMBERED ELEMENTS IN A STAR-SHAPED ARRANGEMENT |
US2394285A (en) * | 1944-07-27 | 1946-02-05 | Bendix Aviat Corp | Pump |
FR1563223A (en) * | 1968-03-01 | 1969-04-11 | ||
EP1306553A2 (en) * | 2001-10-27 | 2003-05-02 | Robert Bosch Gmbh | Fuel pump, fuel system and method for operating a fuel system and an internal combustion engine |
EP1437507A2 (en) * | 2003-01-08 | 2004-07-14 | Thomas Industries, Inc. | Piston pump |
DE102004048714A1 (en) * | 2004-10-06 | 2006-04-13 | Siemens Ag | Radial piston pump |
US20070148016A1 (en) * | 2005-12-22 | 2007-06-28 | Newport Medical Instruments, Inc. | Reciprocating drive apparatus and method |
DE102007035100A1 (en) * | 2007-07-26 | 2009-01-29 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
WO2012162389A1 (en) * | 2011-05-24 | 2012-11-29 | Invacare Corp. | Oxygen compressor with boost stage |
WO2013091218A1 (en) * | 2011-12-22 | 2013-06-27 | Ssig Medical Device Co., Ltd | Pump |
WO2013145576A1 (en) * | 2012-03-30 | 2013-10-03 | アルバック機工株式会社 | Pump device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009027312A1 (en) * | 2009-06-30 | 2011-01-05 | Robert Bosch Gmbh | Multi-piston pump |
US20120234270A1 (en) * | 2011-03-17 | 2012-09-20 | GM Global Technology Operations LLC | Engine assembly including crankshaft for v4 arrangement |
CN203809272U (en) * | 2013-12-12 | 2014-09-03 | 北京中清能发动机技术有限公司 | Reciprocating plunger pump base and body and plunger pump |
-
2014
- 2014-09-11 EP EP16207067.6A patent/EP3181902A1/en not_active Withdrawn
- 2014-09-11 CA CA2960908A patent/CA2960908A1/en not_active Abandoned
- 2014-09-11 US US15/509,379 patent/US20170276123A1/en not_active Abandoned
- 2014-09-11 ES ES14762011.6T patent/ES2687955T3/en active Active
- 2014-09-11 EP EP14762011.6A patent/EP3060800B1/en not_active Not-in-force
- 2014-09-11 WO PCT/EP2014/069431 patent/WO2016037655A1/en active Application Filing
- 2014-09-11 BR BR112017004768A patent/BR112017004768A2/en not_active Application Discontinuation
- 2014-09-11 CN CN201480081909.2A patent/CN107076125A/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE315794C (en) * | 1915-01-06 | 1919-11-13 | Giulio Silvestri | STAGE COMPRESSORS CONSISTING OF SIX AND MORE EVEN-NUMBERED ELEMENTS IN A STAR-SHAPED ARRANGEMENT |
US2394285A (en) * | 1944-07-27 | 1946-02-05 | Bendix Aviat Corp | Pump |
FR1563223A (en) * | 1968-03-01 | 1969-04-11 | ||
EP1306553A2 (en) * | 2001-10-27 | 2003-05-02 | Robert Bosch Gmbh | Fuel pump, fuel system and method for operating a fuel system and an internal combustion engine |
EP1437507A2 (en) * | 2003-01-08 | 2004-07-14 | Thomas Industries, Inc. | Piston pump |
DE102004048714A1 (en) * | 2004-10-06 | 2006-04-13 | Siemens Ag | Radial piston pump |
US20070148016A1 (en) * | 2005-12-22 | 2007-06-28 | Newport Medical Instruments, Inc. | Reciprocating drive apparatus and method |
DE102007035100A1 (en) * | 2007-07-26 | 2009-01-29 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
WO2012162389A1 (en) * | 2011-05-24 | 2012-11-29 | Invacare Corp. | Oxygen compressor with boost stage |
WO2013091218A1 (en) * | 2011-12-22 | 2013-06-27 | Ssig Medical Device Co., Ltd | Pump |
WO2013145576A1 (en) * | 2012-03-30 | 2013-10-03 | アルバック機工株式会社 | Pump device |
Also Published As
Publication number | Publication date |
---|---|
BR112017004768A2 (en) | 2017-12-12 |
US20170276123A1 (en) | 2017-09-28 |
CA2960908A1 (en) | 2016-03-17 |
EP3060800B1 (en) | 2018-04-18 |
ES2687955T3 (en) | 2018-10-30 |
EP3060800A1 (en) | 2016-08-31 |
EP3181902A1 (en) | 2017-06-21 |
CN107076125A (en) | 2017-08-18 |
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