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DE19938023A1 - Stirling motor has working piston moving in displacement piston inside outer rigid displacement cylinder, and short-term heat store to utilize residual heat - Google Patents

Stirling motor has working piston moving in displacement piston inside outer rigid displacement cylinder, and short-term heat store to utilize residual heat

Info

Publication number
DE19938023A1
DE19938023A1 DE1999138023 DE19938023A DE19938023A1 DE 19938023 A1 DE19938023 A1 DE 19938023A1 DE 1999138023 DE1999138023 DE 1999138023 DE 19938023 A DE19938023 A DE 19938023A DE 19938023 A1 DE19938023 A1 DE 19938023A1
Authority
DE
Germany
Prior art keywords
displacement
piston
working
cylinder
heat
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
Application number
DE1999138023
Other languages
German (de)
Other versions
DE19938023C2 (en
Inventor
Andreas Gimsa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enerlyt Potsdam GmbH Energie Umwelt Planung und Analytik
Original Assignee
Enerlyt Potsdam GmbH Energie Umwelt Planung und Analytik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Enerlyt Potsdam GmbH Energie Umwelt Planung und Analytik filed Critical Enerlyt Potsdam GmbH Energie Umwelt Planung und Analytik
Priority to DE1999138023 priority Critical patent/DE19938023C2/en
Priority to DE2000116707 priority patent/DE10016707C2/en
Publication of DE19938023A1 publication Critical patent/DE19938023A1/en
Priority to PCT/DE2000/002756 priority patent/WO2001012970A1/en
Priority to DE10082399T priority patent/DE10082399D2/en
Priority to JP2001517041A priority patent/JP2003507618A/en
Application granted granted Critical
Publication of DE19938023C2 publication Critical patent/DE19938023C2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02G1/0435—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 the engine being of the free piston type
    • 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
    • F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F01B7/20—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other
    • 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
    • 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
    • F02G1/044—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 having at least two working members, e.g. pistons, delivering power output
    • 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
    • F02G2243/02—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes having pistons and displacers in the same cylinder
    • 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
    • F02G2244/50—Double acting piston machines
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Actuator (AREA)

Abstract

The Stirling motor has a moveable displacement piston (2), which also acts as cylinder for a working piston (1). The displacement piston moves in a rigid outer displacement cylinder (3). The working piston is connected to the atmosphere via its tubular piston rod (4). This piston rod and the displacement piston rod pass pressure-tight through the displacement cylinder wall next to the connecting rods. The motor has a short-term heat store in the displacement piston to accommodate residual heat and residual working heat. The heat store may be formed by the regenerator (5) integrated in the displacement piston.

Description

Heißgasmotor mit einem Arbeitskolben (1), der im Verdrängerkolben (2) läuft. Damit ist der Verdrängerkolben (2) gleichzeitig auch Arbeitszylinder (2). Der Verdrängerkolben (2) läuft in einem äußeren starren Verdrängerzylinder (3).Hot gas engine with a working piston ( 1 ) which runs in the displacement piston ( 2 ). So that the displacement piston ( 2 ) is also the working cylinder ( 2 ). The displacement piston ( 2 ) runs in an outer rigid displacement cylinder ( 3 ).

Die atmosphärische Luft wird der Normaldruckseite des Arbeitskolbens durch seine rohrförmige Kolbenstange (4) zugeführt. Diese Kolbenstange (4) wird druckdicht durch das Zylindergehäuse des Verdrängerzylinders (3) geführt.The atmospheric air is fed to the normal pressure side of the working piston through its tubular piston rod ( 4 ). This piston rod ( 4 ) is guided pressure-tight through the cylinder housing of the displacement cylinder ( 3 ).

Die Kurbelwelle und die Anbindung der Pleuelstangen von Arbeitskolben (1) und Verdrängerkolben (2) sind so gestaltet, daß der Arbeitskolben (1) dem Verdrängerkolben (2) mit einer Phasenverschiebung von 90° voraus eilt.The crankshaft and the connection of the connecting rods of the working piston ( 1 ) and displacement piston ( 2 ) are designed in such a way that the working piston ( 1 ) leads the displacement piston ( 2 ) with a phase shift of 90 °.

Die Verbindung zur atmosphärischen Luft für die Normaldruckseite des Arbeitskolbens wird über die Luftöffnungen (6) und (7) seiner rohrförmigen Kolbenstange hergestellt.The connection to the atmospheric air for the normal pressure side of the working piston is made via the air openings ( 6 ) and ( 7 ) of its tubular piston rod.

Vorteile gegenüber bisherigen KonstruktionenAdvantages over previous designs

  • - Durch den kompakten Aufbau lassen sich die äußeren Abmessungen reduzieren und es ist eine höhere volumenbezogene Energiedichte zu erreichen.- Due to the compact structure, the outer dimensions can be reduced and it is to achieve a higher volume-related energy density.
  • - Durch den Wegfall eines starren und druckfesten Arbeitszylinders wird eine Gewichtsreduzierung möglich und es ist eine höhere massenbezogene Energiedichte erreichbar.- By eliminating a rigid and pressure-resistant working cylinder, a Weight reduction possible and there is a higher mass-related energy density reachable.
  • - Die Wärmeenergie, die durch das heiße Arbeitsgas und die Reibung des Arbeitskolbens (1) am Verdrängerkolben (2) an die Innenseite des Verdrängerkolbens (2) und die Außenseite des Arbeitskolbens (1) abgegeben wird, geht nicht verloren. Sie kann über direkte Wärmeleitung dem Regenerator (5) zugute kommen und verbleibt an den speicherwirksamen Massen von Arbeitskolben (1) sowie Verdrängerkolben (2). Diese Wärmeenergie wird dem Prozeß mit dem nächsten Arbeitszyklus über den Regenerator (S) oder in Form einer wärmebedingten Druckerhöhung wieder zugeführt. Die geschilderte Anordnung von Arbeitskolben (1) und Verdrängerkolben (2) wirkt also als Wärmefalle. Es ist ein verbesserter Motorwirkungsgrad zu erreichen. Bisherige Konstruktionen sind demgegenüber durch die Anordnung von Kühler und Arbeitszylinder benachteiligt.- The thermal energy that is given off by the hot working gas and the friction of the working piston ( 1 ) on the displacement piston ( 2 ) to the inside of the displacement piston ( 2 ) and the outside of the working piston ( 1 ) is not lost. It can benefit the regenerator ( 5 ) via direct heat conduction and remains on the storage-effective masses of working pistons ( 1 ) and displacement pistons ( 2 ). This heat energy is fed back to the process in the next work cycle via the regenerator (S) or in the form of a heat-related pressure increase. The arrangement of the working piston ( 1 ) and displacement piston ( 2 ) described thus acts as a heat trap. Improved engine efficiency can be achieved. In contrast, previous designs are disadvantaged by the arrangement of the cooler and working cylinder.
  • - Die beidseitige Nähe und gegenläufige Überlappung der Massenschwerpunkte von Arbeitskolben (1) und Verdrängerkolben (2) können einen ruhigeren Motorlauf nach sich ziehen.- The close proximity and opposite overlap of the center of gravity of the working piston ( 1 ) and displacement piston ( 2 ) can result in a smoother engine running.

Claims (3)

1. Heißgasmotor nach dem Stirling-Prinzip, bei dem ein beweglicher Verdrängerkolben (2) der gleichzeitig auch Zylinder für einen Arbeitskolben (1) ist, in einem starren äußeren Verdrängerzylinder (3) läuft und bei dem die Verbindung des Arbeitskolbens (1) mit der atmosphärischen Luft über dessen rohrförmige Kolbenstange (4) erfolgt und bei dem diese Kolbenstange (4) neben der Verdrängerkolbenstange druckdicht durch die an die Pleuelstangen angrenzende Verdrängerzylinderwand geführt wird.1. Hot gas engine according to the Stirling principle, in which a movable displacement piston ( 2 ) which is also a cylinder for a working piston ( 1 ) runs in a rigid outer displacement cylinder ( 3 ) and in which the connection of the working piston ( 1 ) with the Atmospheric air takes place via its tubular piston rod ( 4 ) and in which this piston rod ( 4 ) is guided in a pressure-tight manner next to the displacement piston rod through the displacement cylinder wall adjacent to the connecting rods. 2. Heißgasmotor nach Anspruch 1, dadurch gekennzeichnet, daß die atmosphärische Luft über ein Rohr, das an der geschlossenen Seite des Verdrängerzylinders (2) befestigt ist und druckdicht-beweglich durch die den Pleuelstangen gegenüber liegende Verdränger­ zylinderwand führt, geleitet wird.2. Hot gas engine according to claim 1, characterized in that the atmospheric air is passed through a tube which is attached to the closed side of the displacement cylinder ( 2 ) and movable in a pressure-tight manner through the cylinder wall opposite the connecting rods. 3. Heißgasmotor nach Anspruch 1 und 2, der zur Verbesserung des Motor- Wirkungsgrades einen Kurzzeit- Wärmespeicher im Verdrängerkolben (2) für die zusätzliche Aufnahme über seine Innenseite von Restarbeitswärme und Reibungswärme besitzt. Der Wärmespeicher kann auch der im Verdrängerkolben (2) integrierte Regenerator (5) sein, der diese Aufgaben zusätzlich wahrnimmt und sonst seiner üblichen Bestimmung dient.3. Hot gas engine according to claim 1 and 2, which has a short-term heat accumulator in the displacement piston ( 2 ) for the additional absorption via its inside of residual working heat and frictional heat to improve the engine efficiency. The heat store can also be the regenerator ( 5 ) integrated in the displacement piston ( 2 ), which also performs these tasks and otherwise serves its usual purpose.
DE1999138023 1999-08-11 1999-08-11 Hot gas engine with a working piston that moves within a positive displacement piston Expired - Lifetime DE19938023C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE1999138023 DE19938023C2 (en) 1999-08-11 1999-08-11 Hot gas engine with a working piston that moves within a positive displacement piston
DE2000116707 DE10016707C2 (en) 1999-08-11 2000-03-29 Hot gas engine with a working piston that moves within a positive displacement free piston
PCT/DE2000/002756 WO2001012970A1 (en) 1999-08-11 2000-08-10 Hot-gas engine with pistons that work inside one another
DE10082399T DE10082399D2 (en) 1999-08-11 2000-08-10 Hot gas engine with reciprocating pistons
JP2001517041A JP2003507618A (en) 1999-08-11 2000-08-10 Hot gas engine with multiple pistons moving relative to each other

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999138023 DE19938023C2 (en) 1999-08-11 1999-08-11 Hot gas engine with a working piston that moves within a positive displacement piston

Publications (2)

Publication Number Publication Date
DE19938023A1 true DE19938023A1 (en) 2000-04-27
DE19938023C2 DE19938023C2 (en) 2000-08-24

Family

ID=7918035

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999138023 Expired - Lifetime DE19938023C2 (en) 1999-08-11 1999-08-11 Hot gas engine with a working piston that moves within a positive displacement piston

Country Status (1)

Country Link
DE (1) DE19938023C2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001012970A1 (en) 1999-08-11 2001-02-22 Enerlyt Potsdam Gmbh Hot-gas engine with pistons that work inside one another
WO2001092701A1 (en) * 2000-05-30 2001-12-06 Commonwealth Scientific And Industrial Research Organisation Heat engines and associated methods of producing mechanical energy and their application to vehicles
DE10050828C1 (en) * 2000-10-09 2002-06-13 Enerlyt Potsdam Gmbh Double-action single-cylinder hot gas engine with inner and outer pistons has two compression cavities and two expansion cavities
DE10016707C2 (en) * 1999-08-11 2002-06-20 Enerlyt Potsdam Gmbh En Umwelt Hot gas engine with a working piston that moves within a positive displacement free piston
EP1306539A3 (en) * 2001-10-24 2003-10-22 Enerlyt Potsdam GmbH Two cycle hot gas engine
WO2022194877A1 (en) * 2021-03-17 2022-09-22 Cixten Cartridge for a heat engine having a thermodynamic cycle and associated heat engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10248785B4 (en) * 2002-10-15 2013-01-17 STIP - Stirling Technologie Institut Potsdam gemeinnützige GmbH Two-cycle hot gas engine with two moving parts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE31128C (en) * G. A. BUSCHBAUM in Darmstadt, Liebigstr. 25 Innovation in closed hot air machines
US1128860A (en) * 1914-05-08 1915-02-16 George W Stahl Caloric engine.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE31128C (en) * G. A. BUSCHBAUM in Darmstadt, Liebigstr. 25 Innovation in closed hot air machines
US1128860A (en) * 1914-05-08 1915-02-16 George W Stahl Caloric engine.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001012970A1 (en) 1999-08-11 2001-02-22 Enerlyt Potsdam Gmbh Hot-gas engine with pistons that work inside one another
DE10016707C2 (en) * 1999-08-11 2002-06-20 Enerlyt Potsdam Gmbh En Umwelt Hot gas engine with a working piston that moves within a positive displacement free piston
WO2001092701A1 (en) * 2000-05-30 2001-12-06 Commonwealth Scientific And Industrial Research Organisation Heat engines and associated methods of producing mechanical energy and their application to vehicles
US7062914B2 (en) 2000-05-30 2006-06-20 Commonwealth Scientific And Industrial Research Organization Heat engines and associated methods of producing mechanical energy and their application to vehicles
DE10050828C1 (en) * 2000-10-09 2002-06-13 Enerlyt Potsdam Gmbh Double-action single-cylinder hot gas engine with inner and outer pistons has two compression cavities and two expansion cavities
EP1306539A3 (en) * 2001-10-24 2003-10-22 Enerlyt Potsdam GmbH Two cycle hot gas engine
WO2022194877A1 (en) * 2021-03-17 2022-09-22 Cixten Cartridge for a heat engine having a thermodynamic cycle and associated heat engine
FR3120916A1 (en) * 2021-03-17 2022-09-23 Pierre-Yves Berthelemy Cartridge for thermal machine with thermodynamic cycle and module for associated thermal machine
US12305541B2 (en) 2021-03-17 2025-05-20 Cixten Cartridge for a heat engine having a thermodynamic cycle and associated heat engine

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