EP1461523A1 - Moteur a gaz chaud - Google Patents

Moteur a gaz chaud

Info

Publication number
EP1461523A1
EP1461523A1 EP02785008A EP02785008A EP1461523A1 EP 1461523 A1 EP1461523 A1 EP 1461523A1 EP 02785008 A EP02785008 A EP 02785008A EP 02785008 A EP02785008 A EP 02785008A EP 1461523 A1 EP1461523 A1 EP 1461523A1
Authority
EP
European Patent Office
Prior art keywords
working
piston
heating
medium
line
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Withdrawn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
EP02785008A
Other languages
German (de)
English (en)
Inventor
Wilhelm Servis
Ludwigk. Von Segesser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1461523A1 publication Critical patent/EP1461523A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F02G2242/00—Ericsson-type engines having open regenerative cycles controlled by valves
    • 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
    • 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
    • F02G2243/04—Crank-connecting-rod drives
    • F02G2243/06—Regenerative displacers
    • 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
    • F02G2243/24—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes having pistons and displacers in the same cylinder with free displacers
    • 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
    • F02G2250/00—Special cycles or special engines
    • F02G2250/24—Ringbom engines, the displacement of the free displacer being obtained by expansion of the heated gas and the weight of the piston
    • 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
    • F02G2254/00—Heat inputs
    • F02G2254/30—Heat inputs using solar radiation
    • 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
    • F02G2254/00—Heat inputs
    • F02G2254/90—Heat inputs by radioactivity
    • 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
    • F02G2270/85—Crankshafts

Definitions

  • the invention relates to a hot gas engine according to the preamble of claim 1.
  • a hot gas engine of the type mentioned is known from DE 25 22 711 AI.
  • the known engine a Stirling engine, contains a cylinder in which a working piston connected to a crank drive and a displacement piston connected to the same drive are arranged such that they can be moved back and forth relative to one another.
  • the displacement piston divides the cylinder space into a first working space delimited by the cylinder cover and a second working space delimited by the working piston.
  • the work rooms are each connected via a passage provided in the cylinder wall to an outer connecting duct, which contains a heating device for heating the working medium in the first working room and a cooling device for cooling the working medium in the second working room, as well as a regenerator arranged between the heating device and the cooling device.
  • the invention has for its object to provide a particularly improved in this respect, further developed hot gas engine of the type mentioned, in which the above disadvantages do not occur.
  • the advantages of the invention are essentially in a simple and, compared to previous versions, improved heat supply to the working medium contained in the cylinder and in a direct cooling of the working medium contained in the cylinder which can be achieved by the injection of a liquefied working medium and in a higher thermal efficiency which can be achieved thereby see, the design according to the invention also enables a simpler, compact and inexpensive construction of the Hot gas engine and a much more efficient operation of this machine.
  • FIG. 1 shows a first embodiment of a hot gas engine according to the invention in a longitudinal section
  • FIG. 3 shows a third embodiment of a hot gas engine according to the invention in a longitudinal section
  • FIG. 5 shows a partially illustrated hot gas engine according to FIG. 3 in a fifth embodiment
  • Fig.6-9 details of a hot gas engine according to Fig.3, each in a modified embodiment, and 10 shows a sixth embodiment of a hot gas machine according to the invention in a longitudinal section.
  • FIG. 1 shows a Stirling hot gas engine, which contains a housing 1, a cylinder 2 with a cylinder cover 3, a working piston 4 arranged displaceably in the cylinder 2, and a displacement device 5 arranged between the latter and the cylinder cover 3, the working piston 4, the with the cylinder cover 3 one for receiving any
  • Working medium for example, air, helium or the like, limited cylinder space 6, can be coupled via a hollow piston rod 7 and a connecting rod 8 articulated thereon to a drive arrangement 10 which contains a crankshaft 11 mounted in the housing 1 with a flywheel 12.
  • the crankshaft 10 can be used with any work machine, e.g. a generator, not shown, are coupled.
  • the piston rod 7 is axially displaceably guided in a crosshead 13 connected to the housing 1.
  • the cylinder 2 is connected to the housing 1 and the cylinder cover 3 by means of screws 19.
  • the cylinder 2 and / or the cylinder cover 3 can each be provided with a heat-insulating layer 20 as shown.
  • the displacement device 5, which divides the cylinder space 6 into a first working space 14 facing the working piston 4 and a second working space 15 facing the cylinder cover 3, contains a displacement piston 17, which is attached to the cylinder cover 3 via a second piston rod 16 guided in the cylinder cover 3 , for controllable drive device 18 is coupled to be displaceable relative to the working piston 4.
  • the drive device 18 can be an electric one or, as assumed in the example shown, contain a pneumatically operated motor, which can be influenced by known control means, not shown, for example by control signals derived from a specific angular position of the crankshaft 11.
  • the working piston 4 is designed as a hollow body with a cavity 21 which is delimited by an end wall 22 facing the first working chamber 14, a peripheral wall 23 and a bottom part 24 connected to the hollow piston rod 7, at least the end wall 22 being made of a material with high thermal conductivity , e.g. B, an aluminum alloy.
  • the end wall 22 and the bottom part 24 can, as shown, be designed as rigid plates which are screwed to a ring with the U-shaped cross section forming the peripheral wall 23.
  • the bottom part 24 contains a passage 25, which is open against the hollow piston rod 7, for a fluid outlet opening into the cavity 21
  • Operating medium specific management body 32 in the form of a piston rod 7 extending through in the longitudinal direction of the inner tube which delimits with the wall of piston rod 7 an open against the cavity 21 connecting channel 38 for discharging the working medium, the management body 32 is a k wall of the piston rod 7 passes through the first Connection part 33 and a line arrangement 30, which contains a movable line section 34, can be coupled to a fixed connection element for the operating medium.
  • the connecting channel 38 is connected to a second connection part 39 provided in the wall of the piston rod 7 and a movable line section 40 to a Fixed connection element for the operating medium to be discharged can be coupled.
  • the peripheral wall 23, the bottom part 24 and the piston rod 7 can each be provided with at least one layer 26 made of a heat-insulating material, eg B, glass wool or the like , Lined,
  • the line member 32 which may be provided with a corresponding heat-insulating outer insulation, is designed as an element of a heating device 31 for heating the working medium located in the first working space 14.
  • the heating device 31 comprises a heating element formed on the working piston 4 with a heating surface 28 directed towards the first working space 14 and a heating arrangement 29 for this heating element.
  • the heating surface 28 is formed on the end wall 22 of the working piston 4 provided as a heating element.
  • the heating arrangement 29 contains one of the heating elements 29 Cavity 21 of the working piston 4 assigned stationary feed unit 35 with a feed line 37 connected to a heat source 36 for a fluid heat transfer medium. B, a burner may be provided, the combustion product of which serves as a heat transfer medium.
  • the feed line 37 can be coupled via the line arrangement 30 to the line member 32, which ensures that the
  • Heat transfer medium ensured in the cavity 21, wherein heat is continuously given off to the working medium located in the first working space 14 via the heated end wall 22.
  • the cooled in the cavity 21 heat transfer medium is by the
  • Connection channel 38 is discharged and can be discharged via a discharge line 41 which can be coupled to the line section 40 to the environment or, as shown, to a collector 42 present in the feed unit 35.
  • the line sections 34 and 40 can each contain a flexible metal hose,
  • a cooling device 44 assigned to the first working space 14 is provided for the cooling of the heated working medium required for operating the hot gas power engine.
  • This comprises an injection device 46, which can be connected to a storage unit 45 for liquefied working medium and can be controlled by itself, for introducing a certain amount of the liquefied working medium used as coolant into the first working space 14 and a discharge arrangement 47 for discharging an excess amount of the working medium which arises during the injection process first work room 14.
  • coolant can be the working medium used for the working process or, according to another possible embodiment, a similar second working medium.
  • the injection device 46 contains an injection element 48 which penetrates the cylinder wall and which opens into the first working chamber 14 between the illustrated top dead center position of the working piston 4 and the bottom dead center position of the displacer 17 indicated by dashed lines.
  • the injection device 46 is also connected to a control device, not shown, which, via control means known per se, for example, by control signals derived from a specific angular position of the crankshaft 11, in the sense of a cyclical
  • Actuation of the injection device 46 can be influenced.
  • the discharge arrangement 47 contains an outlet line 49 which passes through the cylinder wall and which is above the line shown in FIG the bottom dead center position of the working piston 4, indicated by dashed lines, is connected to the first working space 14.
  • the outlet line 49 can be led outside or, as shown, connected to a collector 50 for the excess working medium.
  • Designs are also possible in which two or more injection lines 48 and / or outlet lines 49 are provided which are offset with respect to one another in the circumferential direction.
  • the displacement piston 17 is designed as a hollow body which has a shell-shaped lower part 51 and a cover plate 53.
  • the cover plate 53 is held on a central shoulder protruding from the lower part 51 by an end section of the second piston rod 16 which can be screwed to it, the lower part 51 and the
  • Cover plate 53 are each provided with a plurality of through openings 55 for the working medium.
  • an insert 56 through which the working medium can flow and made of a regeneratively heat-storing material.
  • the insert 56 can be a loose winding of a band-shaped wire screen consisting of several turns or, as assumed in the embodiment shown, a loose packing consisting of corresponding, concentrically arranged ring-shaped band sections, which extends over the entire lower part 51.
  • the insert 56 thus forms a coherent regenerator 57 integrated in the displacement piston 17, which in each case extracts heat from the heated working medium as it passes from the first working space 14 into the second working space 15 and supplies this heat to the working medium again when it enters the first working space 14 flowing back.
  • the regenerator 57 extends essentially over the cross section of the Cylinder space 6, so that a correspondingly large storage capacity can be achieved,
  • the heat supplied to the working piston 4 from the outside is continuously released within the engine to the working medium located in the first working space 14.
  • the cooling of the continuously heated working medium required during the compression phase of the working process is performed by the injection device assigned to the first working space 14 46 guaranteed.
  • the heat required during the expansion phase is continuously supplied to the working medium through the working piston 4.
  • the heat exchanged isochorously in the engine is released by the regenerator 57 at the end of the compression phase into the working medium by displacement and taken over at the end of the expansion phase.
  • the working piston 4 can be designed with or without a sealant.
  • the heating surface 28 formed on the end wall 22 of the working piston 4 enables heat to be transferred v / ir over the entire cylinder cross section and is therefore particularly efficient, which is still caused by the movements of the working piston 4 and by turbulence of the working medium
  • the injection device 46 also provides a correspondingly advantageous cooling of the working medium, which is effective at least in the first working space 14 and is therefore particularly efficient, which is also further favored by the movements of the working piston 4 and by turbulence of the working medium.
  • Compression phase a correspondingly increased pressure, v / or by the yield of the heat supplied to the engine can be further improved.
  • the excess amount of the working medium is released in accordance with the pressure prevailing in the engine at the start of the compression.
  • FIG. 2 shows parts of the embodiment according to FIG. 1 and a modified heating device 61 with a catalytic catalytic converter installed in the cavity 21 of the working piston 4
  • Heating unit 62 which via the line member 32 and the line arrangement 30 to a source 64 in a supply unit 63 of a fuel, for. B. hydrogen, and via a line member 65 of an additional line arrangement 66 to one in the
  • Feed unit 63 existing source 67 of a reaction or oxidizing agent can be connected Process products resulting from the catalytic process can be released into the atmosphere through the connecting duct 38 surrounding the line members 32 and 65 and the discharge line 41 or, as shown, can be fed to a collector 68.
  • the heat to be transferred to the working medium is generated within the engine, in the immediate vicinity of the end wall 22 to be heated.
  • a particularly efficient heat transfer can therefore be achieved with the heating device 61, which can be controlled in a relatively simple manner.
  • the heating device 61 which can be controlled in a relatively simple manner.
  • an electrical heating element that can be connected to a stationary power source or a heating unit that can be connected to a stationary control device that contains a nuclear heat source can be provided in the cavity 21 of the working piston 4.
  • FIG. 3 shows a hot gas engine, which differs from the embodiment according to FIG. 1 only by a modified one
  • Displacement device 70 differs. The following description is therefore essentially limited to the corresponding differences.
  • Displacement device 70 comprises a shell-like guide element 71 which is arranged in a stationary manner in the cylinder space 6 and a dynamic conveying device 72 which is intended for displacing the working medium from the first working space 14 into the second working space 15 and for returning the displaced working medium into the first working space 14.
  • the guide element 71 is designed with a central passage opening 73 connecting the working spaces 14 and 15 and with a peripheral portion protruding from the first working space 14, which, with the cylinder wall, delimits an annular, peripheral passage opening 75 for the working medium that connects the working spaces 14 and 15.
  • the conveying device 72 contains a fan arranged in the second working space 15, as shown a radial fan 76 which can be flowed through through the central passage opening 73 and which is coupled via a shaft 79 to a drive unit 77 mounted on the cylinder cover 3.
  • the drive unit 77 may include an electric motor.
  • the guide element 71 can have a number, for. B. three, arranged distributed over its circumference holding elements in the cylinder 2. Set screws or, as shown, ribs 74 protruding from the guide element 71 can be provided as holding elements, which are held on the cylinder wall in any manner not shown.
  • the guide element 71 can also be connected to the cylinder cover 3 to form an installation unit by any holding means, not shown.
  • a regenerator 78 which surrounds the fan 76 in a ring, is arranged in the second working space 15.
  • the regenerator 78 contains a heat-storing packing 69 which is attached to the guide element 71 and can flow radially through the working medium and which, like the insert 56 in the embodiment according to FIG. 1, can be composed of upright, band-shaped sections of a wire screen or the like,
  • the fan 76 is continuously driven during operation of the hot gas engine.
  • the working medium, which is continuously heated in the first working space 14, is therefore in a permanent circulation through the central passage opening 73 into the second working space 15 sucked in and conveyed back into the first work space 14 through the peripheral passage opening 75,
  • the required cooling of the working medium is achieved by injecting the liquefied working medium, as a result of which the entire working medium present in cylinder 2 and also the regenerator 78 are cooled and subsequently heated, the pressure in cylinder 2 being increased approximately isothermally.
  • the heat supplied from the outside is released to the working medium and to the regenerator 78, as a result of which work is generated and the pressure in the cylinder 2 is reduced approximately isothermally.
  • the excess amount of working fluid is released in accordance with the pressure prevailing in the engine at the start of compression.
  • the drive unit 77 of the fan 76 can be operated independently of the drive arrangement 10 of the hot gas engine and can therefore be designed in a correspondingly simple manner without special control means.
  • the stationary displacement device 70 and the regenerator 78 can be of relatively small size
  • FIG. 4 shows parts of a hot gas engine which differs from the embodiment according to FIG. 3 by a modified one
  • Heating device 81 for heating the working medium located in the first working space 14 and a modified displacement device 80 as well as by a modified working piston 82 and an auxiliary device 83 assigned to it, which can be switched on temporarily or continuously.
  • the following description is essentially limited to the corresponding differences.
  • the heater 81 comprises a solar collector system 85 designed to emit concentrated solar radiation 84 with at least one connecting element 86 assigned to the cylinder cover 3, which is intended for introducing at least part of the concentrated solar radiation 84 into the first working space 14 and, as shown, is attached to the drive unit 77 of the displacement device 80.
  • the connecting element 86 is via a feed line 87, which can consist of a bundle of optical fibers, to an output of the
  • Solar collector system 85 can be connected and contains a tubular line element 90 for solar radiation 84 intended for insertion into cylinder 2.
  • the fan 76 of the displacement device 80 can be coupled to the drive unit 77 via a continuous hollow shaft 88 which is at the same time intended for the contact-free reception of the line element 90 and thus surrounds an outlet for the solar radiation 84 directed against the first working space 14.
  • the line element 90 can be provided with a closure part, not shown, made of a transparent material, e.g. Glass or the like.
  • the concentrated solar radiation 84 can be introduced unhindered, without significant heating of the conveying device 72 and the working medium located in the second working space 15, through the central passage opening 73 into the first working space 14 and concentrated on a central part of the working piston 82, the end wall thereof 22 is formed on a relatively solid head part.
  • a heat absorbing material with high thermal conductivity, for. B a ceramic material suitable for high thermal stresses;
  • the stored heat can be distributed evenly over the end wall 22 in an advantageously efficient, simple manner and released to the working medium located in the first working space 14.
  • the solar collector system 85 can contain a focusing system, known per se, of concave mirrors, not shown Connection member 86 of a further, not shown, hot gas power machine can be assigned.
  • the auxiliary device 83 assigned to the working piston 82 comprises a stationary heat exchange system 93, which can be connected to a source of any fluid heat transfer medium, for cooling and / or for additional heating of the end wall 22.
  • the heat exchange system 93 contains a heat storage unit 95 with one for receiving any one
  • Storage medium certain storage container 96 which may be provided with heat-insulating insulation.
  • the storage container 96 contains a heat exchanger 97 shown as a cooling / heating coil, the output of which is connected to the line member 32 via a pump 98 and a feed line 99 for the heat transfer medium and the input of which is connected to a discharge line 100 for the discharge duct 38 the heat transfer medium is connected.
  • the heat exchanger 97 and the cavity 21 can thus be flowed through in a closed circuit, with - depending on the operating phase - the end wall 22 optionally being able to extract or supply heat.
  • heat can be extracted from the heat transfer medium heated in the cavity 21 or from the one cooled in the cavity Heat transfer medium heat are supplied, whereupon the heat transfer medium is conveyed back into the cavity 21.
  • Heat transfer medium and / or as a storage medium can, for. B, oil, liquid sodium or, as assumed in the present example, water can be provided.
  • the auxiliary device 83 to which control and / or regulating means known per se, which are not shown, can be assigned, is intended in each case for any cooling of the solar that may be required to ensure heated end wall 22 to a predetermined operating temperature and / or sufficient heating of the end wall 22 even in the event of insufficient or no solar radiation.
  • FIG. 5 shows parts of a hot gas engine which differs from the embodiment according to FIG. 3 only by a modified cooling device 101 and a modified displacement device 102.
  • the following description is therefore limited to the corresponding differences, the injection device 46 of the cooling device 101 attached to the drive unit 77.
  • the fan . 76 of the displacement device 102 can be coupled to the drive unit 77 via a continuous hollow shaft 103, which at the same time is intended for the contact-free reception of a section of the injection line 48 which coaxially penetrates the hollow shaft 103 and which is through the central one Passage opening 73 of the guide element 71 extends into the first working space 14, accordingly only one passage is provided for the discharge arrangement 47 in the cylinder wall.
  • the liquefied working medium used as coolant is injected into a central area of the first working space 14, thereby causing the vaporization Working medium evenly distributed over the cylinder cross-section and the working medium present in cylinder 2 can be cooled accordingly evenly
  • FIGS. 6, 7 and 8 show arrangements of a brush-like regenerator 105 which is modified compared to the embodiments according to FIGS. 3, 4 and 5 and which contains a heat-storing pack 106 through which working medium can flow radially and with a large number of pin-shaped storage elements arranged next to one another, which are arranged in one circular bracket 108 are attached free-standing, wire sections can be provided as storage elements, the bracket 108 can consist of individual plate segments or, as assumed in the embodiments shown, be made in one piece. 6 can be attached to the guide element 71 or, as shown in FIGS. 7 and 8, to the cylinder cover 3.
  • FIG. 8 also shows a modified displacement device 110 with a guide element 111 which is rotatably arranged at a distance from the cylinder wall and which is at the same time designed as a rotor of an axial fan.
  • the guide element 111 which one on its
  • Has peripheral part formed blades 113 can be coupled to the drive unit 77 via a central, cage-like connection part 112.
  • the working medium heated in the first working space 14 can be sucked through the peripheral passage opening 75 into the second working space 15 and conveyed back through the central passage opening 73 into the first working space 14.
  • the working medium can also be sucked through the central opening 73 and conveyed back through the peripheral opening 75.
  • FIG. 9 shows a further modified displacement device 115 with a guide element 116 which is rotatably arranged at a distance from the cylinder wall and which, with the radially flowable regenerator 78 mounted thereon, forms a rotor which can be coupled to the drive unit 77 and a fan arrangement which can be flown through the central passage opening 73.
  • FIG. 10 shows a hot gas engine which differs from the embodiment according to FIG. 1 by a modified heating device 118 for heating the working medium located in the first working space 14 and a modified working piston 119.
  • the heating device 118 contains an injection arrangement 121, which can be connected to a source 120 of any fluid, hot heating medium and can be actuated for introducing the hot heating medium into the first working space 14.
  • the heating medium is supercritically hot water vapor assumed.
  • the injection arrangement 121 contains at least one injection element 122 which passes through the cylinder wall and is designed as a heating element and which is connected to a supply line 124 for the heating means is connected and opens into the first working space 14 above the top dead center position of the working piston 119, the injection arrangement 121 is connected to a control device, not shown, which uses control means known per se, for example, by a specific angular position of the crankshaft 11 derived control signals, e.g. shortly before or after the end of the compression phase, can be influenced in the sense of a cyclical injection of the heating medium.
  • the heating medium cooled during injection is released at the end of the expansion process, together with the excess amount of working medium, through the discharge arrangement 47
  • the working piston 119 which is unheated in this embodiment, can be of any conventional design and can be coupled to the drive arrangement 10 via a correspondingly simple piston rod 123.
  • the embodiment described enables an advantageously simple, compact design of the hot gas engine and a directly effective and thus particularly efficient
  • a corresponding injection arrangement 121 can also be provided in one of the embodiments described above with heatable working pistons 4 or 82, for example as an additional heating device which can be switched on or off continuously.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un moteur à gaz chaud comprenant un cylindre (2), un piston de travail (4) délimitant avec le couvercle (3) du cylindre une chambre cylindrique (6) destinée à contenir un fluide de travail, un piston déplaceur (17) divisant la chambre cylindrique (6) en une première et une seconde chambre de travail (14 et 15), ainsi qu'un dispositif de chauffe (31) servant à chauffer le fluide de travail dans la première chambre de travail (14) et un dispositif de refroidissement (44) servant à refroidir le fluide de travail chauffé. Les chambres de travail (14 et 15) communiquent l'une avec l'autre par l'intermédiaire d'un régénérateur (57) disposé dans le piston déplaceur (17). Le dispositif de chauffe (31) comprend une surface de chauffe (28) formée sur la face avant (22) du piston de travail (4), ainsi qu'un système chauffant (29) associé au piston de travail (4). Le dispositif de refroidissement (44) comprend une unité d'injection (46) servant à introduire du fluide de travail condensé dans la première chambre de travail (14). Cette conception permet d'améliorer l'acheminement de la chaleur au fluide de travail contenu dans le cylindre et d'obtenir un refroidissement direct dudit fluide. L'invention permet par ailleurs de réaliser un moteur à gaz chaud de construction simplifiée et compacte.
EP02785008A 2001-12-31 2002-12-27 Moteur a gaz chaud Withdrawn EP1461523A1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
CH23822001 2001-12-31
CH238201 2001-12-31
CH387022002 2002-03-06
CH3872002 2002-03-06
CH143202 2002-08-21
CH14322002 2002-08-21
PCT/CH2002/000727 WO2003060309A1 (fr) 2001-12-31 2002-12-27 Moteur a gaz chaud

Publications (1)

Publication Number Publication Date
EP1461523A1 true EP1461523A1 (fr) 2004-09-29

Family

ID=27178433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02785008A Withdrawn EP1461523A1 (fr) 2001-12-31 2002-12-27 Moteur a gaz chaud

Country Status (4)

Country Link
US (1) US7028473B2 (fr)
EP (1) EP1461523A1 (fr)
AU (2) AU2002350371A1 (fr)
WO (2) WO2003060310A1 (fr)

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CN106930860B (zh) * 2017-04-10 2018-08-07 广东合一新材料研究院有限公司 活塞固定式发动机
CN110185551A (zh) * 2019-07-09 2019-08-30 朱国钧 一种无油空气动力发动机
CN113734600B (zh) * 2021-09-15 2023-06-02 陕西理工大学 一种纳米硒制备用合成菌筛选存储装置

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WO2003060309A1 (fr) 2003-07-24
US7028473B2 (en) 2006-04-18
AU2002350371A1 (en) 2003-07-30
US20050072149A1 (en) 2005-04-07
AU2002350369A1 (en) 2003-07-30
WO2003060310A1 (fr) 2003-07-24

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