EP0691467A1 - Moteur à gaz chaud avec un dispositif à déplacement rotatif - Google Patents

Moteur à gaz chaud avec un dispositif à déplacement rotatif Download PDF

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Publication number
EP0691467A1
EP0691467A1 EP95110230A EP95110230A EP0691467A1 EP 0691467 A1 EP0691467 A1 EP 0691467A1 EP 95110230 A EP95110230 A EP 95110230A EP 95110230 A EP95110230 A EP 95110230A EP 0691467 A1 EP0691467 A1 EP 0691467A1
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EP
European Patent Office
Prior art keywords
hot gas
gas engine
displacer
engine according
piston
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.)
Withdrawn
Application number
EP95110230A
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German (de)
English (en)
Inventor
Harald Hofmann
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0691467A1 publication Critical patent/EP0691467A1/fr
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a hot gas engine with a rotating displacer according to the preamble of patent claim 1.
  • Hot gas engines of the type mentioned are known.
  • DE-OS 32 39 021 describes a heating machine which consists of a closed housing with inner walls, a rotary piston, a working space being delimited between this and the inner walls of the housing, and a piston which is connected to a crankshaft via a crank mechanism and a planetary gear , consists.
  • Regenerator devices as heat transfer surfaces are attached to the chamber walls.
  • the working space is changed in volume by a piston, which is arranged in a cylinder.
  • the cylinder is located in the rotary piston towards its outer surface. This means that several cylinders and therefore pistons can also be arranged radially.
  • the crank mechanism and the coupled planetary gear result in a very complicated structure with several integrated bearings, which decisively determine and limit the service life.
  • the invention is based on the problem of creating a hot gas engine which is distinguished by a simple construction and is equally suitable for high-pressure and high-performance machines or endurance runners.
  • the advantages achieved by the invention are, in particular, that the arrangement of the working piston in a rotatably mounted displacer, which also represents the flywheel, enables a simple construction of a hot gas engine, which is further characterized in that the smallest gas dead spaces in the displacer system / Work piston result and regeneration can take place from the outside.
  • a mechanical movement transducer with a cam member By means of a mechanical movement transducer with a cam member, the reciprocating movement of the working piston is converted into a rotary movement, which is fed to a directly coupled energy converter.
  • the curve shape of the curve element of the motion converter provides an additional possibility of controlling the angular velocity of the displacer and thus the thermodynamic process sequence.
  • the main components displacer, piston, Movement converter and energy converter are housed in one housing.
  • the parts displacer, piston and motion converter are preferably designed as turned parts and the heat exchanger as milled parts and are therefore easy and economical to manufacture.
  • the shape of the displacer cutout can be made variable within limits, so that the gas exchange spaces can easily be adapted to the respective thermodynamic working regime.
  • the heat supply part can contain a device for forced heating, or devices that use sources for heating it can be coupled so that an optimal heat flow is transferred into the working gas of the engine.
  • cooling devices are integrated or coupled in order to dissipate the heat flow from the working gas in the engine to the environment.
  • claim 5 contains the heat dissipation part and according to claim 6 this and the regenerator parts contain devices for forced cooling by passing a cooling medium through these parts.
  • cooling devices are coupled to these parts in further variants, so that a wide variety of cooling mechanisms can be used.
  • the thermal interconnection of the regenerator segments used according to claim 7 leads to a process-supporting thermodynamic sequence in the hot gas engine.
  • the displacer according to claims 8 and 9 consists of one body and according to claim 10 of two partial bodies which are mechanically connected to one another at an angle greater than 150 ° and less than 210 ° and are thermally separated from one another by a thermal seal.
  • the use of two Partial body leads to a double-acting and double-acting working piston of the hot gas engine.
  • the displacer is constructed both continuously according to claim 8 on the surface and according to claim 9 from lamellae.
  • the housing parts are provided with ribs according to claim 11. This construction results in a substantial increase in area combined with an increased and faster heat exchange between the working gas and the differently tempered housing parts, the output and the speed of the hot gas engine being increased.
  • the electrical machine as an energy converter according to claim 16 provides an easily outward form of energy that is directly connected to an electrical network or consumer and is used at the same time to start the hot gas engine.
  • the hot gas engine according to claim 17 is a complete hydraulic pump.
  • the housing 1 of the hot gas engine forms a closed space which contains all other parts such as heat exchanger parts 10, 12 and 13, displacer 5, working piston 2, piston rod 3, motion converter 6 and energy converter 7 according to FIGS. 1 and 9.
  • the working gas used in high-performance hot gas engines is under high internal pressure. The amount of pressure affects the power to be transmitted.
  • the mechanical axial division of the housing 1 consists of a thermal part, the motion converter 6 and the energy converter 7, wherein the motion converter 6 and the energy converter 7 can also be interchanged or arranged one above the other.
  • the thermal part is divided radially into heat supply 10, regenerator 13, heat dissipation 12 and insulator parts 11 and axially into support elements and mounting elements. All parts of the housing are screwed or glued together airtight. Disks are attached to the end faces of the housing 1, so that an airtight housing 1 is present. If these panes consist of a thermally highly conductive material, thermal seals are placed between them and the housing parts.
  • the heat supply 10 and the heat dissipation part 12 each serve to transfer heat between the outer medium coupled to the hot gas engine and the inner working gas.
  • the heat dissipation part 12 has devices for forced cooling 14 in the form of bores which contain a cooling medium flowing therein.
  • the regenerator parts 13 are coupled on the outside and the insulator parts 11 mechanically supplement the inner ribbing.
  • the radial arrangement of the heat exchangers 10 and 12 creates stable thermodynamic relationships between the segment space 8 and the displacer 5.
  • the regenerator 13, insulator 11 and heat exchanger parts 10 and 12 are thermally separated from the support and mounting elements of the housing 1.
  • Control module of the hot gas engine is the displacer 5, which represents a hollow cylinder which is rotatably mounted in the housing 1. It consists of two identical partial bodies, which are connected to one another by being rotated by 180 ° and are thermally decoupled from one another by a thermal seal 15. 5 has an axially laminated ribbing.
  • the regenerator 13, the insulator 11 and the heat exchanger parts 10, 12 of the housing 1 are equipped with ribs 16 as shown in FIG. 8.
  • the laminated ribbing of the displacer 5 engages in the ribs 16 without contact.
  • the laminated ribbing is interrupted radially at the same point for each part of the body. The size of the interruption corresponds to a quarter of the cross section of the partial body.
  • the resulting axial and radial segment space 8 represents the space in which the working gas rests.
  • the working gas is passed alternately past the differently tempered heat exchanger parts 10, 12 and 13 and thus coupled and uncoupled without having to leave the segment spaces 8.
  • the segment spaces 8 of the partial bodies of the displacer 5 each have an opening 9 to the piston space 4.
  • the width of these openings 9 is determined by the width of the segment space 8 to the piston space 4 and the length by the ratio of the segment space 8 to the piston space 4 respective reversal points of the working piston 2, these openings 9 are closed neither in the direction of the displacer end faces nor by the width of the working piston 2. This allows the working gas to flow from one working area to another in order to realize the temperature-dependent medium pressure compensation.
  • the drive element in the hot gas engine is the cylindrical working piston 2, the working cylinder of which is formed by the hollow cylindrical displacer 5.
  • the working piston 2, the piston rod 3 and the first part of the movement transducer 6, which is equipped with a spatial curve with a defined curve shape in the form of a groove or a bulge, are firmly connected to one another and at the same time move translationally and rotationally with respect to the housing 1 10 and 11 each show the first part of the movement transducer 6.
  • the second part of the movement transducer 6 is in the form of a finger when using a groove as a curve element or a claw when using a bead. This part is fixed to the housing 1.
  • the interaction of the two movement transducer parts results in the conversion of the back and forth movement of the piston rod 3 fastened to the working piston 2 into a rotational movement thereof.
  • the piston rod 3 ordered from a square material and thus serves simultaneously as a transmission element of the rotary movement to the displacer 5 and the energy converter 7.
  • the bearings of the piston rod 3, the displacer 5 and the energy converter 7 are designed as plain bearings.
  • the housing 1 of this embodiment consists of a heat supply 10, a heat dissipation part 12 and two isolating parts 11 separating these two.
  • the housing parts are screwed or glued together air-tight. Disks are attached to the end faces of the housing 1, so that an airtight housing 1 is present. If these panes consist of a thermally highly conductive material, thermal seals are placed between them and the housing parts.
  • all other parts such as displacer 5, working piston 2, piston rod 3, motion converter 6 and energy converter 7 are included according to FIGS. 1 and 6.
  • the mechanical axial division of the housing 1 consists of a thermal part, a motion converter 6 and an energy converter 7, wherein the motion converter 6 and the energy converter 7 can also be interchanged or arranged one above the other.
  • 6 is divided radially into heat supply 10, heat dissipation 12 and insulator parts 11, as shown in FIG. 6.
  • the heat supply 10 and heat dissipation part 12 each serve to transfer heat between the external medium coupled to the hot gas engine and the internal working gas.
  • the heat dissipation part 12 has devices for forced cooling 14. These consist of bores which are axially made in this housing part.
  • a coolant flows through this or, on the other hand, cooling takes place by means of evaporation and condensation of the coolant in a space closed to the outside.
  • the radial arrangement of the heat exchanger parts 10, 12 creates stable thermodynamic conditions for the segment space 8 and the displacer 5.
  • the insulator 11 and the heat exchanger parts 10, 12 are thermally separated from the support and mounting elements of the housing 1.
  • the control module of the hot gas engine is again the displacer 5, which has the same structure as that of the first exemplary embodiment.
  • the isolator 11 and the Heat exchanger parts 10, 12 of the housing 1 are also equipped with ribs 16 according to FIG. 8.
  • the drive element in this embodiment is again the cylindrical working piston 2.
  • the hollow cylindrical displacer 5 forms its working cylinder.
  • the working piston 2, the piston rod 3 and the first part of the movement transducer 6 in the form of a divided cam cylinder 19 according to FIG. 12 are fixed to one another and at the same time freely movable in the displacer 5 and in the housing 1.
  • the cam cylinder 19 is firmly connected to the energy converter 7 in the form of an electrical generator.
  • the second part of the motion converter 6 consists of two fingers which are firmly connected to the housing 1 and one of which engages one of the curves of the first part of the motion converter 6.
  • the interaction of the two movement transducer parts results in the conversion of the back and forth movement of the piston rod 3 fastened to the working piston 2 into a rotary movement of the generator. All bearings for the piston rod 3, the displacer 5 and the energy converter 7 are designed as plain bearings.
  • This embodiment is particularly suitable for a solar application due to its very simple structure.

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  • 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)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP95110230A 1994-07-09 1995-06-30 Moteur à gaz chaud avec un dispositif à déplacement rotatif Withdrawn EP0691467A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4424319 1994-07-09
DE19944424319 DE4424319C1 (de) 1994-07-09 1994-07-09 Heißgasmotor

Publications (1)

Publication Number Publication Date
EP0691467A1 true EP0691467A1 (fr) 1996-01-10

Family

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EP95110230A Withdrawn EP0691467A1 (fr) 1994-07-09 1995-06-30 Moteur à gaz chaud avec un dispositif à déplacement rotatif

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EP (1) EP0691467A1 (fr)
DE (2) DE4424319C1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809847A1 (de) * 1998-03-03 1999-09-16 Rudolf Huttary Stirling-Kreiskolbenmaschine
FR2924762A1 (fr) * 2007-12-05 2009-06-12 Pascot Philippe Machine thermodynamique, en particulier de type stirling.
DE102009017493A1 (de) * 2009-04-16 2011-01-20 Verplancke, Philippe, Dr. Wärmekraftmaschine
JP2015514919A (ja) * 2012-04-25 2015-05-21 ニルス カールバーグ エネルギーコンバータ用のワーキングシリンダ
US20170045018A1 (en) * 2014-04-18 2017-02-16 Hidemi Kurita Stirling engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006014829U1 (de) * 2006-09-25 2008-02-07 Paul Hettich Gmbh & Co. Kg Verstelleinrichtung
DE102008027158A1 (de) * 2008-06-06 2009-12-10 Maiß, Martin Optimierter Aufbau von Stirlingmaschinen mit rotierenden Verdrängern.
DE102012109832B4 (de) * 2012-10-16 2014-12-31 Stirling Concepts UG Freikolbenmaschine und Doppelzylinderfreikolbenmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631200A1 (de) * 1976-07-10 1978-01-19 Wilhelm Funck Kurvengesteuerte doppelt wirkende drehkolben-schieberpumpe
US4622813A (en) * 1983-11-02 1986-11-18 Mitchell Matthew P Stirling cycle engine and heat pump
EP0240467A1 (fr) * 1986-04-04 1987-10-07 Iso Wyrsch Machine alternative à pistons rotatifs
US4926639A (en) * 1989-01-24 1990-05-22 Mitchell/Sterling Machines/Systems, Inc. Sibling cycle piston and valving method
US5109673A (en) * 1991-05-01 1992-05-05 Mechanical Technology Incorporated Relative gas spring configuration free-piston stirling cycle system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2107793B (en) * 1981-10-22 1985-09-18 Malcolm Bicknell Mcinnes Heat engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631200A1 (de) * 1976-07-10 1978-01-19 Wilhelm Funck Kurvengesteuerte doppelt wirkende drehkolben-schieberpumpe
US4622813A (en) * 1983-11-02 1986-11-18 Mitchell Matthew P Stirling cycle engine and heat pump
EP0240467A1 (fr) * 1986-04-04 1987-10-07 Iso Wyrsch Machine alternative à pistons rotatifs
US4926639A (en) * 1989-01-24 1990-05-22 Mitchell/Sterling Machines/Systems, Inc. Sibling cycle piston and valving method
US5109673A (en) * 1991-05-01 1992-05-05 Mechanical Technology Incorporated Relative gas spring configuration free-piston stirling cycle system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809847A1 (de) * 1998-03-03 1999-09-16 Rudolf Huttary Stirling-Kreiskolbenmaschine
FR2924762A1 (fr) * 2007-12-05 2009-06-12 Pascot Philippe Machine thermodynamique, en particulier de type stirling.
WO2009103871A2 (fr) * 2007-12-05 2009-08-27 Pascot, Philippe Machine thermodynamique, en particulier de type carnot et/ou stirling
WO2009103871A3 (fr) * 2007-12-05 2009-11-05 Pascot, Philippe Machine thermodynamique, en particulier de type carnot et/ou stirling
DE102009017493A1 (de) * 2009-04-16 2011-01-20 Verplancke, Philippe, Dr. Wärmekraftmaschine
JP2015514919A (ja) * 2012-04-25 2015-05-21 ニルス カールバーグ エネルギーコンバータ用のワーキングシリンダ
US20150135702A1 (en) * 2012-04-25 2015-05-21 Nils Karlberg Working cylinder for an energy converter
US9840983B2 (en) 2012-04-25 2017-12-12 Nils Karlberg Working cylinder for an energy converter
US20170045018A1 (en) * 2014-04-18 2017-02-16 Hidemi Kurita Stirling engine
US10072608B2 (en) * 2014-04-18 2018-09-11 Hidemi Kurita Stirling engine

Also Published As

Publication number Publication date
DE4424319C1 (de) 1996-02-22
DE19600321A1 (de) 1997-07-10

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