EP1239137A2 - Kolben und Zylinder für einen Stirling-Motor - Google Patents
Kolben und Zylinder für einen Stirling-Motor Download PDFInfo
- Publication number
- EP1239137A2 EP1239137A2 EP02400014A EP02400014A EP1239137A2 EP 1239137 A2 EP1239137 A2 EP 1239137A2 EP 02400014 A EP02400014 A EP 02400014A EP 02400014 A EP02400014 A EP 02400014A EP 1239137 A2 EP1239137 A2 EP 1239137A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cylinder
- stirling engine
- working
- stroke
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2243/00—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes
- F02G2243/30—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes having their pistons and displacers each in separate cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2244/00—Machines having two pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2244/00—Machines having two pistons
- F02G2244/02—Single-acting two piston engines
- F02G2244/06—Single-acting two piston engines of stationary cylinder type
- F02G2244/10—Single-acting two piston engines of stationary cylinder type having cylinders in V-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2270/00—Constructional features
- F02G2270/40—Piston assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2270/00—Constructional features
- F02G2270/45—Piston rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
Definitions
- the invention has for its object a Stirling engine with increased lifespan and larger To provide service intervals.
- a Piston of a Stirling engine with a piston crown, with a piston skirt, with a lower edge for the piston skirt having at least one annular groove in the piston skirt is available for receiving a piston ring, and wherein the Piston over a piston rod, a crosshead and a Connecting rod or directly via a connecting rod with a Crankshaft is coupled, solved by the distance the ring groove that is closest to the crankshaft and the lower edge of the piston skirt between 0.66 x Piston stroke and 1.5 x piston stroke, particularly preferably between 0.9 x piston stroke and 1.1 x piston stroke.
- the Piston shaft on its opposite the piston crown End has a sleeve, so that the invention Length of the piston skirt due to an easy to manufacture Sleeve can be achieved.
- a piston known per se for a Stirling engine in the manner according to the invention be trained. Because the sleeve, apart from the Mass forces, no significant stresses exposed, it can be made very thin-walled.
- globular cast iron as a material for the Cylinder tread has been found in the applicant's experiments proven to be particularly advantageous.
- Globular gray cast iron has an elongation at break of 15% to 20%, which especially in Stirling engines, the cylinders of which one Overpressure is of great advantage.
- the heat transfer from the improves Cylinder running surface on a possibly existing Cooling medium, e.g. Cooling water, firstly with less Wall thicknesses can be worked and secondly only one Material is used.
- Cylinder according to the state of the Technology often exhibit shrinked and hardened Gray cast iron liners on which the heat conduction in Area of contact between the liner and cylinder is very bad.
- the Stirling engine according to FIG. 1 has a crankcase 1 in which a crankshaft 3 is rotatably mounted. On a crank pin 5 of the crankshaft 3 are a first connecting rod 7 and a second connecting rod 9 rotatably mounted.
- the first Connecting rod 7 is a first crosshead 10 and a first Piston rod 11 connected to a compression piston 12.
- the second connecting rod 9 is via a second cross head 13 and a second piston rod 14 with a working piston 15 connected.
- the constructive design of Compression piston 12 and piston 15 is in the Connection with Fig. 1 is not important and will therefore not explained in more detail here.
- the Compression piston 12 runs in a compression cylinder 16, while the working piston 15 in a working cylinder 17 runs.
- the crankshaft 3 and the crank pin 5 are oil lubricated while the compression piston 12 and the Working piston 15 dry in the compression cylinder 16 or in Working cylinder 17 run.
- the regenerator 21 generally consists of a package of wire screens, which are not shown in FIG Individuals are shown. Then that will Working gas in a heater 23, which in the 1 of ribbed tubes is formed, heated to about 650 ° Celsius. This Heating takes place by heat transfer from one in Fig. 1 burner not shown on the heater 23 on the Working gas.
- a Stirling engine can be used as a heat source any heat source with sufficient temperature level are used in the embodiment according to FIG. 1, a burner is used (not shown) which burn a gaseous or liquid fuel can.
- the so-called high temperature range of the Stirling engine is countered by thermal insulation 27 Protected against heat loss.
- Figure 2 shows a view of an inventive Compression piston 12 with a first guide band 29, a first piston ring 31 and a second piston ring 33.
- the guide band 29 serves to guide the Compression piston 12 in the cylinder, not shown.
- the first piston ring 31 and the second piston ring 33 serve to seal the piston 12 on the left in FIG located work space, not shown in Figure 2 is to the right of the piston 12, also not shown crankcase 1 of the Stirling engine.
- the Guide band 29 and piston rings 31 and 33 are each recorded in ring grooves in a manner known per se.
- FIG 3 is an embodiment of a Working piston 17 according to the invention in longitudinal section shown. Some components are the same Reference numerals and in the following only the Differences explained to avoid repetitions.
- On the working piston 17 is above the piston crown 37 Piston dome 45 attached, which the heat transfer between working gas (not shown) and the Working cylinder 17 reduced.
- There are two in the piston skirt 41 Grooved ring grooves 35 and 47.
- the wide ring groove 47 is used to hold a guide tape made of Teflon (in Fig. 3 not shown), the guide of the working piston 17th takes over in the cylinder, not shown.
- the ring groove 35 receives a piston ring (not shown) which for Sealing the work area from the crankcase serves.
- a sleeve 39 attached to the piston shaft 41.
- the distance "A” measures itself according to the same rules as the Embodiment according to Figure 2 explained.
- an internal thread 49 is also shown, in which a Piston rod, not shown, can be screwed in. Due to the long piston skirt 41 also improves the cooling of the piston rings.
- the design of a piston skirt according to the invention can also for piston compressors for compression different gases can be used. Also at Piston compressors it is undesirable that the too Compressing gases absorb oil.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
- Figur 1
- ein Ausführungsbeispiel eines Stirling-Motors nach dem Stand der Technik mit V-Anordnung der Zylinder im Querschnitt,
- Figur 2
- eine Seitenansicht eines Ausführungsbeispiels eines erfindungsgemäßen Verdichtungskolbens, und
- Figur 3
- einen Querschnitt durch ein Ausführungsbeispiel eines erfindungsgemäßen Arbeitskolbens.
Claims (10)
- Kolben für einen Stirlingmotor, mit einem Kolbenboden (37), mit einem Kolbenschaft (41), wobei der Kolbenschaft (41) eine Unterkante (43) aufweist, wobei in dem Kolbenschaft (41) mindestens eine Ringnut (35) zur Aufnahme eines Kolbenrings (33) vorhanden ist, und wobei der Kolben über eine Kolbenstange (11, 14), einen Kreuzkopf (10, 13) und einen Pleuel (7,9) oder unmittelbar über ein Pleuel (7,9) mit einer Kurbelwelle (3) gekoppelt ist, dadurch gekennzeichnet, dass der Abstand zwischen der Ringnut (35), die am nächsten zu der Kurbelwelle (3) angeordnet ist, und der Unterkante (43) des Kolbenschafts (41) zwischen 0,66 x Kolbenhub und 1,5 x Kolbenhub, besonders bevorzugt zwischen 0,9 x Kolbenhub und 1,1 x Kolbenhub, beträgt.
- Kolben nach Anspruch 1, dadurch gekennzeichnet, dass der Kolbenschaft (41) an seinem dem Kolbenboden (37) entgegengesetzten Ende eine Hülse (39) aufweist.
- Kolben nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass auf dem Kolbenboden (37) ein Kolbendom (45) aufgesetzt ist.
- Kolben nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kolben ein Verdichtungskolben (12) ist.
- Kolben nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kolben ein Arbeitskolben (13) ist.
- Kolben nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kolben ein Verdrängerkolben ist.
- Zylinder für einen Stirling-Motor, mit einer Zylinderlauffläche , dadurch gekennzeichnet, dass der Zylinder aus globularen Grauguss (GGG) besteht, und dass die Zylinderlauffläche induktionsgehärtet ist.
- Zylinder nach Anspruch 7, dadurch gekennzeichnet, dass die Zylinderlauffläche gleitgehont ist.
- Kolben nach Ansprüche 7 oder 8, dadurch gekennzeichnet, dass der Zylinder ein Verdichtungszylinder (15) ist.
- Kolben nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass der Zylinder ein Arbeitszylinder (17) ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10110446A DE10110446A1 (de) | 2001-03-05 | 2001-03-05 | Kolben und Zylinder für einen Stirling-Motor |
DE10110446 | 2001-03-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1239137A2 true EP1239137A2 (de) | 2002-09-11 |
EP1239137A3 EP1239137A3 (de) | 2003-05-28 |
EP1239137B1 EP1239137B1 (de) | 2009-05-27 |
Family
ID=7676308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02400014A Expired - Lifetime EP1239137B1 (de) | 2001-03-05 | 2002-03-05 | Kolben und Zylinder für einen Stirling-Motor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1239137B1 (de) |
AT (1) | ATE432413T1 (de) |
DE (2) | DE10110446A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102041370A (zh) * | 2010-11-12 | 2011-05-04 | 江南大学 | 钢顶铝裙活塞环槽感应强化防自回火装置 |
SE1850005A1 (en) * | 2018-01-02 | 2019-07-03 | Maston AB | A Stirling engine arranged with a gas channel comprising three heat exchangers |
SE1850002A1 (en) * | 2018-01-02 | 2019-07-03 | Maston AB | Stirling engine comprising a transition flow element |
SE1850003A1 (en) * | 2018-01-02 | 2019-07-03 | Maston AB | Stirling engine comprising a metal foam regenerator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR935169A (fr) * | 1945-10-29 | 1948-06-11 | Philips Nv | Perfectionnements aux machines à piston à gaz chaud |
CH347677A (de) * | 1956-01-24 | 1960-07-15 | Energy Limited | Heissgaskolbenmaschine mit äusserer Heizung |
DE2851806A1 (de) * | 1978-11-30 | 1980-06-12 | Briggs & Stratton Corp | Stirling-kraftmaschine und verfahren zum betreiben einer solchen maschine |
JPS5896148A (ja) * | 1981-12-02 | 1983-06-08 | Aisin Seiki Co Ltd | ガス機関のピストン |
US5755100A (en) * | 1997-03-24 | 1998-05-26 | Stirling Marine Power Limited | Hermetically sealed stirling engine generator |
-
2001
- 2001-03-05 DE DE10110446A patent/DE10110446A1/de not_active Withdrawn
-
2002
- 2002-03-05 AT AT02400014T patent/ATE432413T1/de not_active IP Right Cessation
- 2002-03-05 DE DE50213570T patent/DE50213570D1/de not_active Expired - Lifetime
- 2002-03-05 EP EP02400014A patent/EP1239137B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR935169A (fr) * | 1945-10-29 | 1948-06-11 | Philips Nv | Perfectionnements aux machines à piston à gaz chaud |
CH347677A (de) * | 1956-01-24 | 1960-07-15 | Energy Limited | Heissgaskolbenmaschine mit äusserer Heizung |
DE2851806A1 (de) * | 1978-11-30 | 1980-06-12 | Briggs & Stratton Corp | Stirling-kraftmaschine und verfahren zum betreiben einer solchen maschine |
JPS5896148A (ja) * | 1981-12-02 | 1983-06-08 | Aisin Seiki Co Ltd | ガス機関のピストン |
US5755100A (en) * | 1997-03-24 | 1998-05-26 | Stirling Marine Power Limited | Hermetically sealed stirling engine generator |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 007, no. 197 (M-239), 27. August 1983 (1983-08-27) & JP 58 096148 A (AISHIN SEIKI KK;OTHERS: 01), 8. Juni 1983 (1983-06-08) * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102041370A (zh) * | 2010-11-12 | 2011-05-04 | 江南大学 | 钢顶铝裙活塞环槽感应强化防自回火装置 |
CN102041370B (zh) * | 2010-11-12 | 2012-05-23 | 江南大学 | 钢顶铝裙活塞环槽感应强化防自回火装置 |
SE1850005A1 (en) * | 2018-01-02 | 2019-07-03 | Maston AB | A Stirling engine arranged with a gas channel comprising three heat exchangers |
SE1850002A1 (en) * | 2018-01-02 | 2019-07-03 | Maston AB | Stirling engine comprising a transition flow element |
SE1850003A1 (en) * | 2018-01-02 | 2019-07-03 | Maston AB | Stirling engine comprising a metal foam regenerator |
WO2019135699A1 (en) * | 2018-01-02 | 2019-07-11 | Maston AB | Stirling engine comprising transition flow element |
WO2019135695A1 (en) * | 2018-01-02 | 2019-07-11 | Maston AB | Stirling engine comprising metal foam regenerator |
WO2019135694A1 (en) * | 2018-01-02 | 2019-07-11 | Maston AB | Stirling engine arranged with a gas channel comprising three heat exchangers |
CN111819354A (zh) * | 2018-01-02 | 2020-10-23 | 马斯通公司 | 布置有包括三个热交换器的气体通道的斯特林发动机 |
US11261823B2 (en) | 2018-01-02 | 2022-03-01 | Maston AB | Stirling engine arranged with a gas channel including three heat exchangers |
US11261824B2 (en) | 2018-01-02 | 2022-03-01 | Maston AB | Stirling engine comprising metal foam regenerator |
CN111819354B (zh) * | 2018-01-02 | 2023-01-10 | 马斯通公司 | 布置有包括三个热交换器的气体通道的斯特林发动机 |
Also Published As
Publication number | Publication date |
---|---|
DE50213570D1 (de) | 2009-07-09 |
ATE432413T1 (de) | 2009-06-15 |
DE10110446A1 (de) | 2002-09-19 |
EP1239137A3 (de) | 2003-05-28 |
EP1239137B1 (de) | 2009-05-27 |
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