EP3146206A1 - Axialkolbenmaschine - Google Patents
AxialkolbenmaschineInfo
- Publication number
- EP3146206A1 EP3146206A1 EP15721721.7A EP15721721A EP3146206A1 EP 3146206 A1 EP3146206 A1 EP 3146206A1 EP 15721721 A EP15721721 A EP 15721721A EP 3146206 A1 EP3146206 A1 EP 3146206A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axial piston
- piston machine
- housing
- cylinder
- machine 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
- 238000000576 coating method Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 17
- 239000011810 insulating material Substances 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 150000003839 salts Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 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
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
- F04B53/166—Cylinder liners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F01B3/0017—Component parts, details, e.g. sealings, lubrication
- F01B3/002—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F01B3/0017—Component parts, details, e.g. sealings, lubrication
- F01B3/0023—Actuating or actuated elements
- F01B3/0026—Actuating or actuated element bearing means or driving or driven axis bearing means
-
- 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
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B1/141—Details or component parts
- F04B1/143—Cylinders
Definitions
- the present invention relates to an axial piston machine with a shaft which is non-rotatably connected to a swash plate, according to the preamble of claim 1.
- the invention also relates to a heat recovery system with such axial piston machine.
- a generic axial piston machine with a shaft which is rotatably connected to a swash plate.
- a plurality of cylinders are arranged, in each of which built and hollow pistons are arranged translationally adjustable.
- Each of these pistons is coupled via an associated spherical bearing and a sliding block with the swash plate, whereby a movement of the respective piston causes a drive of the swash plate and thus a driving of the shaft.
- each inlet opening of a cylinder is swept once over a control disk with an eccentrically arranged passage opening in each revolution and thereby fed to the respective cylinder working medium.
- a disadvantage of the known from the prior art axial piston machine is their relatively complex production.
- the present invention therefore deals with the problem of providing for an axial piston machine of the generic type an improved or at least one alternative embodiment, which is characterized in particular by a simplified structure and a simplified assembly.
- the present invention is based on the general idea to make open a cylinder head of an axial piston machine, so that in these comparatively easy cylinder liner can be used, said cylinder liner has not only a cylinder jacket, but also an end wall and an inlet opening.
- the cylinder liner thus completes the entire cylinder chamber, whereby the previously very expensive production of the cylinder head and the cylinder can be circumvented.
- the axial piston machine according to the invention in this case has a shaft which is rotatably connected to a swash plate and in which at least four ring / annularly arranged around and coaxial with the shaft cylinder are provided, in which in particular built and hollow piston are arranged translationally adjustable.
- Each of these pistons is connected via its own spherical bearing and a sliding block with the swash plate of the drive.
- an inlet opening is arranged, which is swept periodically by a control disk with an eccentrically arranged passage opening.
- the passage opening passes over the associated inlet opening of the cylinder exactly once, thereby enabling one Entry of working fluid into the associated cylinder.
- the inlet opening to the control disk towards a coating in particular a polymer coating, a DLC coating, a carbon coating o- or a polytetrafluoroethylene coating.
- a coating in particular a polymer coating, a DLC coating, a carbon coating o- or a polytetrafluoroethylene coating.
- heat-insulating cavities are arranged between the cylinder liner and the housing or the cylinder head of the axial piston machine. Since heat losses generally represent energy losses and have a negative effect on the efficiency of the axial piston machine, heat dissipation is at least reduced by the inventive provision of heat-insulating cavities, whereby the efficiency of the axial piston machine can be increased. At least one of these cavities is filled with air and / or a heat-insulating material, which improves the overall thermal insulation.
- air As a heat-insulating material provides a nearly optimal paint heat insulator, which not only ensures high thermal insulation, but also has no weight.
- the housing of the axial piston machine i. the cylinder head, composed of at least two housing parts, wherein between at least two housing parts, at least one heat-insulating cavity is arranged.
- the assembly of the housing or the cylinder head of the axial piston from at least two housing parts in turn facilitates their manufacture or assembly, wherein the provision of at least one heat-insulating cavity in turn minimizes uncontrolled and especially undesirable heat flow and thus positively influences the efficiency of the axial piston.
- the housing or the cylinder head from several parts, these can be processed more easily due to the improved accessibility.
- the housing or the cylinder head can be made of a cast material and have an integrated outlet channel or be composed of several housing parts, of which at least two housing parts together form an outlet channel.
- the latter alternative allows a comparatively simple design of the housing or the cylinder head, since, for example, sand or salt cores, as they must be provided in the molded housing for imaging the exhaust duct, are no longer required. By eliminating a comparatively complicated casting core, a significant manufacturing advantage can be realized.
- a particularly advantageous solution of the axial piston machine according to the invention is characterized in that a housing covering the outlet channel is provided.
- a cover likewise serves for thermal insulation and can be removed, for example, at a distance from the housing. be arranged or to the cylinder head.
- an insulator in particular air or a heat-insulating material, is provided which additionally complicates an undesirable heat dissipation at least.
- FIG. 1 shows a sectional view through an axial piston machine according to the invention in the region of a cylinder with inserted cylinder liner
- FIG. 2 shows a representation as in FIG. 1, but with a differently designed cylinder head / housing
- Fig. 3 is a representation as in Figure 1, but with additionally arranged
- FIG. 4 is an illustration of the axial piston according to the invention at
- an axial piston machine 1 which is for example part of a heat recovery system 2 of a motor vehicle, not shown in detail, a shaft 3, which is rotatably connected to a swash plate 4.
- a shaft 3 which is rotatably connected to a swash plate 4.
- cylinders 5 Arranged around the shaft 3 and coaxially therewith are preferably at least four cylinders 5, in which built and hollow pistons 6 are arranged so as to be translationally adjustable.
- Each of these pistons 6 is coupled via a spherical bearing 7 and a sliding block 8 with the swash plate 4 for driving the shaft 3.
- Each cylinder 5 is also associated with an inlet opening 9, which is each covered by a control disk 10.
- This control disk 10 has an eccentrically arranged passage opening 1 1 and is also rotatably connected to the shaft 3.
- a cylinder liner 13 is now used in at least one cylinder 5, which has not only a lateral surface, but also an end wall 14 and the inlet opening 9 integrated therein.
- the cylinder liner 13 from below into a cylinder cavity of the cylinder 5 is inserted until it abuts with its (Zylinderbuchsen-) end wall 14 on a cover 16.
- the cover 16 protrudes collar like and designed as a stop inward, so that the cylinder liner 13 can be supported with its end wall 14 thereon.
- the inlet opening 9 has a coating 17, in particular a polymer coating, a DLC coating, a carbon coating or a polytetrafluoroethylene coating (PTFE), which is not only particularly resistant to wear, but also friction between the control disk 10 and the inlet opening 9 or the edge thereof at least minimized.
- a coating 17 in particular a polymer coating, a DLC coating, a carbon coating or a polytetrafluoroethylene coating (PTFE), which is not only particularly resistant to wear, but also friction between the control disk 10 and the inlet opening 9 or the edge thereof at least minimized.
- the inlet opening 9 is integrated in the cover 16 so that the coating 17 is arranged on the cover 16 around the inlet opening 9.
- the cover 16 forms an integral part of the housing 15 and the cylinder head.
- 15 heat-insulating cavities 18 are arranged between the cylinder liner 13 and the housing, which are optionally filled with air or with a heat-insulating material. Since even air is a comparatively good heat insulator, moreover has no weight, an air-filled cavity 18 is preferably used.
- corresponding ribs and Webs for limiting the cavities 18 on the one hand and for supporting the cylinder liner 13 on the other hand provided, so that the cylinder liner 13 is held reliably.
- the housing 15 of the axial piston machine 1 is composed of several housing parts, wherein between the housing part 19 and the housing part 20, in this case the cover 16, again a heat-insulating cavity 18 '. is provided, which should at least reduce unwanted heat dissipation.
- the housing 15 can also be composed of more than two housing parts 19, 20, wherein, in particular in the variant shown according to FIG. 2, a further housing part 21 forms an outlet channel 22 together with the housing part 19.
- seals 23 may be arranged between the two housing parts 19 and 21.
- a connection between the housing part 21 and the housing part 19 can be accomplished, for example, by a screw connection (not shown).
- a flat gasket (not shown) can be used beyond.
- the cover 16 and this housing part 20 is the figures 1 and 2 part of a multi-part lid 24, which includes a further housing part 25 and a partition plate 26 in addition to the housing part 20.
- the intervening cavity 18 "is also filled with air or a heat-insulating material for insulation purposes.Of course, it is also conceivable that the cover 24 consists only of the housing part 25, which is mounted in a correspondingly modified form directly on the housing 15 as in accordance with Figures 3 and 4 is shown.
- the housing part 19 can also be formed as a casting, as shown for example in Figures 1 and 3 and 4, wherein in this Case of the outlet channel 22 by means of a casting core, in particular by means of a salt or sand core, is produced.
- this comparatively complex casting core for producing the outlet channel 22 is omitted, since this is formed by the two housing parts 19 and 21 which are connected to one another.
- a cover 27 covering the housing 15 in the region of the outlet channel 22 is provided, which likewise serves for thermal insulation and which, for example, at a distance, that is to say with a gap, to the housing part 19, i. to the housing 15, is arranged. Between the cover 27 and the housing 15 either air or also a heat-insulating material can be arranged.
- the cover 27 is connected, for example, by means of a welded connection to the housing part 19.
- an outlet opening 28 can be mechanically reworked, in particular if the housing 15 or the housing part 19 is designed as a cast part.
- the comparatively close tolerance of the dimensions of the outlet opening 28 is therefore particularly important that the outlet does not open too early and thus the efficiency is reduced.
- This can be done, for example, by first milling out smaller outlet openings 28 in the casting and producing them by precise reworking, for example by punching or laser cutting, upon insertion of the cylinder liner 13. It is also conceivable that the cylinder liner 13 is punched / cut as a flat sheet metal part and then rolled up to the cylindrical cylinder liner 13 or reshaped and welded.
- the mechanical reworking of the outlet opening 28 can also take place in the axial piston machine 1 according to FIG. 4, in which, however, no cylinder liner 13 is provided in this cylinder 5.
- the axial piston machine 1 according to the invention a significantly simpler manufacture of the same is possible, since the cylinder head or the housing 15 are open at the top and thereby allow a comparatively simple insertion of the cylinder liner 13. At the same time they also allow a relatively simple reworking of the housing 15, in particular in the region of the outlet opening 28.
- By providing cavities 18 between the housing 15 and the actual cylinder liner 13 can also be a heat-insulating arrangement can be created by which less heat flows away and the efficiency the axial piston machine 1 can be increased.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Compressor (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014209893.9A DE102014209893A1 (de) | 2014-05-23 | 2014-05-23 | Axialkolbenmaschine |
| PCT/EP2015/060503 WO2015177003A1 (de) | 2014-05-23 | 2015-05-12 | Axialkolbenmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3146206A1 true EP3146206A1 (de) | 2017-03-29 |
| EP3146206B1 EP3146206B1 (de) | 2018-08-29 |
Family
ID=53175057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15721721.7A Not-in-force EP3146206B1 (de) | 2014-05-23 | 2015-05-12 | Axialkolbenmaschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3146206B1 (de) |
| DE (1) | DE102014209893A1 (de) |
| WO (1) | WO2015177003A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB218061A (en) * | 1923-05-04 | 1924-07-03 | Adrianus Anthony Wilton Van Re | Improvements in steam or internal combustion engines |
| GB557822A (en) * | 1941-09-15 | 1943-12-07 | Gunnar Axel Wahlmark | Improvements in or relating to fluid pressure generating devices |
| US3169488A (en) * | 1961-11-03 | 1965-02-16 | New York Air Brake Co | Rotary cylinder barrel and method of making same |
| DE3407904A1 (de) * | 1983-03-24 | 1984-09-27 | Sachs Systemtechnik Gmbh, 8720 Schweinfurt | Zylinderbaugruppe fuer eine zylinder-kolben-brennkraftmaschine und verfahren zu deren herstellung |
| DE4424607A1 (de) * | 1994-07-13 | 1996-01-18 | Danfoss As | Hydraulische Axialkolbenmaschine |
| US7367783B2 (en) * | 2003-03-07 | 2008-05-06 | Honda Motor Co., Ltd. | Rotating fluid machine |
| DE102010036917A1 (de) | 2010-08-09 | 2012-02-09 | Amovis Gmbh | Axialkolbenmaschine |
| DE102011052481A1 (de) * | 2010-08-09 | 2012-02-09 | Amovis Gmbh | Axialkolbenmaschine |
| DE102010052508A1 (de) * | 2010-11-26 | 2012-05-31 | Daimler Ag | Abwärmenutzungsvorrichtung |
-
2014
- 2014-05-23 DE DE102014209893.9A patent/DE102014209893A1/de not_active Withdrawn
-
2015
- 2015-05-12 EP EP15721721.7A patent/EP3146206B1/de not_active Not-in-force
- 2015-05-12 WO PCT/EP2015/060503 patent/WO2015177003A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP3146206B1 (de) | 2018-08-29 |
| DE102014209893A1 (de) | 2015-11-26 |
| WO2015177003A1 (de) | 2015-11-26 |
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Inventor name: MUELLER, ROLF Inventor name: KREISIG, MICHAEL Inventor name: SCHACHERER, ROLAND Inventor name: BEERENS, CHRISTOPH Inventor name: LEUTERT, MARKUS Inventor name: REPGEN, BERTHOLD Inventor name: BAITINGER, GERT Inventor name: WIESKE, PETER Inventor name: SCHNEIDER, FALK |
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Inventor name: WIESKE, PETER Inventor name: BEERENS, CHRISTOPH Inventor name: LEUTERT, MARKUS Inventor name: REPGEN, BERTHOLD Inventor name: KREISIG, MICHAEL Inventor name: SCHNEIDER, FALK Inventor name: BAITINGER, GERT Inventor name: MUELLER, ROLF Inventor name: SCHACHERER, ROLAND |
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