EP2430310A1 - Kolbenmaschine, insbesondere flüssigkeitskolbenmaschine - Google Patents
Kolbenmaschine, insbesondere flüssigkeitskolbenmaschineInfo
- Publication number
- EP2430310A1 EP2430310A1 EP10710305A EP10710305A EP2430310A1 EP 2430310 A1 EP2430310 A1 EP 2430310A1 EP 10710305 A EP10710305 A EP 10710305A EP 10710305 A EP10710305 A EP 10710305A EP 2430310 A1 EP2430310 A1 EP 2430310A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- delivery volume
- piston engine
- units
- engine 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract 4
- 230000003213 activating effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000007246 mechanism 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/24—Bypassing
- F04B49/243—Bypassing by keeping open the inlet valve
-
- 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
- F04B2201/00—Pump parameters
- F04B2201/08—Cylinder or housing parameters
- F04B2201/0807—Number of working cylinders
Definitions
- Piston machine in particular liquid piston machine
- the invention relates to a piston engine, in particular a liquid piston machine, with a plurality of piston units, which have geometrically different sized delivery volume and are individually adjustable for the discrete setting of a total delivery volume of the piston engine.
- Piston engines of the type mentioned are known from the prior art. Piston engines are used in many fields of technology as pumps and / or as motors. To produce a variable volume flow or volume, optionally also a variable pressure (pump) or a speed and torque (motor), different principles are known. Common designs for continuously changing / adjusting the delivery volume of the piston units are, for example, piston machines with a swashplate, a sloping axis or a swashplate. In this case, the upper and lower dead center of the piston strokes is varied by an angular adjustment, thereby continuously adjusting the delivery volume. However, such embodiments have a low efficiency, especially in the partial load range.
- the piston engine according to the invention is characterized by the characterizing features of claim 1. Thereafter, the piston engine is designed such that the larger delivery volume of one of the piston units is in each case twice as large as the next smaller delivery volume of another of the piston units. It is therefore provided that the piston units have different sized delivery volumes and that the piston unit is designed with a larger delivery volume such that its delivery volume is twice as large as that of the other piston unit having the next smaller delivery volume. For example, in three piston units provided, the delivery volume of the second piston unit is twice as large as that of the first, and the delivery volume of the third piston unit twice as large as that of the second piston unit. The same results for any other number of piston units of the piston engine.
- each piston unit is assigned a switchable idle valve for parking the piston unit.
- the idle valve is designed such that opening of the idle valve prevents a pressure in the piston unit constructed and thus liquid is promoted.
- the idling valve thus also allows the volume located in the piston unit to "run empty.”
- the idling valve is designed in such a way that the outlet cross-section of the piston unit through which the volume to be delivered is to be pumped is simultaneously closed when the idling valve is opened
- each piston unit can be driven by means of its own drive shaft, so that the drive shafts can be moved one at a time can be controlled or turned off.
- the piston engine has at least three piston units. As a result, it is already possible, as already stated above, to set eight different total delivery volumes of the reciprocating engine in equidistant steps / steps.
- the piston engine is designed as a radial and / or linear piston machine. As a result, both friction losses and losses due to leaks are reduced and ensures a high efficiency of the piston engine, especially in the partial load range.
- each piston unit has at least one piston axially displaceable in a cylinder. It is also conceivable that for each piston unit two cylinders are provided, each with a piston axially displaceable therein. These then form a piston group. Accordingly, the total delivery volume can be adjusted by changing the piston group delivery volume. Thus, it is also conceivable that of a piston group, only the delivery volume of one of the piston-cylinder units is turned off. Here- by further gradations for adjusting the total delivery volume of the piston engine are possible.
- the different sized delivery volume of the piston units are determined by different sized cross-sectional areas of the cylinder and piston. This geometric design makes it possible in a simple manner to provide and to ensure the different delivery volumes as described above.
- the different sized delivery volume can be determined by piston strokes of different sizes of the piston units.
- piston engine has been described above essentially as a piston pump, it is obvious to the person skilled in the art that the embodiments described above are also applicable to piston engines designed as piston engines.
- Figure 1 shows an embodiment of an advantageous piston pump in a schematic representation
- the delivery volume of the piston units 10, 11, 12 can thus be expressed as
- V, 2 ⁇ V 1-1 , where i equals the number of piston units.
- Each of the piston units 10, 11, 12 and the cylinder 3, 4, 5 is assigned an idle valve 13, 14 and 15, respectively. From each of the idle valves 13, 14 and 15 performs a bypass channel 16, 17 and 18 of the corresponding piston unit 10, 11 and 12 funded volume "unused" out of the piston engine 1, if the respective idle valve 13, 14, 15 accordingly
- the bypass channels 16, 17 and 18 are expediently brought together to form a common (not shown here) (return) channel, so that the respective piston unit 10 can be opened by opening the idling valves 13, 14 and / or 15. 11 and 12 are turned off, so that the delivered by her delivery volume is not pumped but unused forwarded or returned and thereby not the total delivery volume of the reciprocating engine 1 is supplied.
- the respective jump between the different total delivery volumes corresponds in this case due to the above-described advantageous embodiment of the Koi benmaschine 1 respectively the delivery volume of the piston unit with the smallest delivery volume, in this case V 10th
- the maximum total delivery volume V G , m a x corresponds to:
- Figures 2 to 9 each show the delivery volume of the piston units 10, 1 1, 12 as well as the resulting from the corresponding setting of the idle valves 13, 14 and 15 total delivery volume of the reciprocating engine 1 or piston pump 2.
- On the left side is in each case of the respective Piston unit 10, 1 1, 12 yielded (dashed) and the possible (blank) delivery volume of the piston units 10, 1 1 and 12.
- On the right side, respectively, the resulting total delivery volume V G is shown accordingly.
- FIG. 2 shows the corresponding delivery volume for the case in which all bypass channels 16, 17 and 18 are released by means of the corresponding idle valve 13, 14 and 15 or all piston units 10, 11, 12 are turned off, so that none of them are utilized by the possible delivery volume and the total delivery volume V G is zero.
- the piston unit 10 is turned off and the piston unit 11 is activated, so that the resulting total delivery volume corresponds to the delivery volume of the piston unit 11 and thus twice the delivery volume of the piston unit 10. If, according to FIG. 5, the piston unit 10 is connected, the resulting total delivery volume V G is supplemented by the delivery volume V 10 of the piston unit 10, that is, increased by a further stage.
- the piston unit 10 is connected according to FIG.
- the piston unit 10 is turned off and the piston unit 11 is activated according to FIG.
- FIG. 9 shows the setting of the piston engine 1 or the linear piston pump 2 in the event that the maximum total delivery rate Vc m a x is set.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009003066A DE102009003066A1 (de) | 2009-05-13 | 2009-05-13 | Kolbenmaschine, insbesondere Flüssigkeitskolbenmaschine |
PCT/EP2010/053689 WO2010130495A1 (de) | 2009-05-13 | 2010-03-22 | Kolbenmaschine, insbesondere flüssigkeitskolbenmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2430310A1 true EP2430310A1 (de) | 2012-03-21 |
EP2430310B1 EP2430310B1 (de) | 2013-01-09 |
Family
ID=42269652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10710305A Not-in-force EP2430310B1 (de) | 2009-05-13 | 2010-03-22 | Kolbenmaschine, insbesondere flüssigkeitskolbenmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120036992A1 (de) |
EP (1) | EP2430310B1 (de) |
CN (1) | CN102422021A (de) |
DE (1) | DE102009003066A1 (de) |
WO (1) | WO2010130495A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010053091A1 (de) * | 2010-12-01 | 2012-06-06 | Linde Aktiengesellschaft | Mehrstufiger Kolbenverdichter |
US9571482B2 (en) | 2011-07-21 | 2017-02-14 | Intel Corporation | Secure on-line sign-up and provisioning for Wi-Fi hotspots using a device management protocol |
US9307408B2 (en) * | 2012-12-27 | 2016-04-05 | Intel Corporation | Secure on-line signup and provisioning of wireless devices |
US9951771B2 (en) * | 2013-04-08 | 2018-04-24 | Danfoss Power Solutions Inc. | Selectable flow hydraulic gear pump |
GB2553800B (en) * | 2016-09-14 | 2018-10-24 | Energwave Nautilus Ltd | Producing compressed air from ocean waves |
DE102019208179A1 (de) * | 2019-06-05 | 2020-12-10 | Robert Bosch Gmbh | Pumpe, insbesondere Kraftstoffhochdruckpumpe |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0378967B1 (de) * | 1989-01-19 | 1993-01-27 | GebràDer Sulzer Aktiengesellschaft | Hubkolbenkompressor |
US5078580A (en) * | 1991-03-29 | 1992-01-07 | Dresser-Rand Company | Plural-stage gas compressor |
ES2120076T3 (es) * | 1993-11-08 | 1998-10-16 | Sig Schweiz Industrieges | Dispositivo de mando para una bomba de regulacion del grado de llenado. |
US5988165A (en) * | 1997-10-01 | 1999-11-23 | Invacare Corporation | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization |
US6065440A (en) * | 1999-07-07 | 2000-05-23 | Pasquan; Raymond F. | Internal combustion engine with binary cylinder sizing for variable power output |
US6932583B2 (en) * | 2001-04-16 | 2005-08-23 | Siemens Diesel Systems Technology | Multiple stage pump with multiple external control valves |
DE10153189A1 (de) | 2001-10-27 | 2003-05-15 | Bosch Gmbh Robert | Kraftstoffpumpe, Kraftstoffsystem, Verfahren zum Betreiben eines Kraftstoffsystems sowie Brennkraftmaschine |
CN2751106Y (zh) * | 2004-11-12 | 2006-01-11 | 郑州知信机电科技开发有限公司 | 比例调节高压双液注浆泵 |
WO2008025395A1 (de) * | 2006-09-01 | 2008-03-06 | Robert Bosch Gmbh | Steuereinrichtung für eine hydraulische kolben maschine mit veränderbarem volumenstrom |
US7779627B1 (en) * | 2009-02-05 | 2010-08-24 | Ries James D | Variable-displacement piston-cylinder device |
DE102009038462A1 (de) * | 2009-08-21 | 2011-03-03 | Dürr Systems GmbH | Taumelkolbenpumpe zur Dosierung eines Beschichtungsmittels |
-
2009
- 2009-05-13 DE DE102009003066A patent/DE102009003066A1/de not_active Withdrawn
-
2010
- 2010-03-22 CN CN2010800207810A patent/CN102422021A/zh active Pending
- 2010-03-22 US US13/266,955 patent/US20120036992A1/en not_active Abandoned
- 2010-03-22 EP EP10710305A patent/EP2430310B1/de not_active Not-in-force
- 2010-03-22 WO PCT/EP2010/053689 patent/WO2010130495A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010130495A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2430310B1 (de) | 2013-01-09 |
US20120036992A1 (en) | 2012-02-16 |
WO2010130495A1 (de) | 2010-11-18 |
CN102422021A (zh) | 2012-04-18 |
DE102009003066A1 (de) | 2010-11-18 |
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