EP1285160B1 - Heissgasmotor - Google Patents

Heissgasmotor Download PDF

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Publication number
EP1285160B1
EP1285160B1 EP01940002A EP01940002A EP1285160B1 EP 1285160 B1 EP1285160 B1 EP 1285160B1 EP 01940002 A EP01940002 A EP 01940002A EP 01940002 A EP01940002 A EP 01940002A EP 1285160 B1 EP1285160 B1 EP 1285160B1
Authority
EP
European Patent Office
Prior art keywords
stirling engine
lever
engine according
piston
pivot point
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.)
Expired - Lifetime
Application number
EP01940002A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1285160A1 (de
Inventor
Karl Kocsisek
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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 EP1285160A1 publication Critical patent/EP1285160A1/de
Application granted granted Critical
Publication of EP1285160B1 publication Critical patent/EP1285160B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
    • 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
    • F02G1/06—Controlling
    • 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
    • F02G2270/00—Constructional features
    • F02G2270/42—Displacer drives
    • F02G2270/425—Displacer drives the displacer being driven by a four-bar mechanism, e.g. a rhombic mechanism

Definitions

  • the invention relates to a hot gas engine with at least one working piston and at least one displacer piston.
  • a Stirling engine with double-acting piston is known in which a motion transmission device is provided, via which the dead volume in the working space, the average working pressure of the working gas and the phase angle between adjacent pistons can be changed.
  • the movement transmission device has a control lever which is keyed on a control shaft.
  • a power lever is pivotally connected to the control lever about a pivot axis, wherein this is arranged perpendicular to the piston movement direction and on its piston rod facing the upper side has a curved control surface.
  • On this is a rotatably mounted on the piston rod role.
  • a non-generic combustion gas engine in which a device for transmitting the linear movement of the piston rods is provided in a rotational movement, wherein a lever arm is pivotally connected end to the piston rod or with a linkage and a pivotally mounted arm.
  • the lever arm is articulated at a pivot point, which is provided laterally on a linkage, the position of which is adjustable via a lever arm, which is connected to the axis of rotation, and is stationary during the motion transmission.
  • the position of the axis of rotation can be adjusted via a gear that can be rotated by means of an adjusting part, which can be rotated with a continuous thread via a bevel gear, so that - especially in view of the numerous other possibilities for power control in a combustion gas engine - a complex , results in inefficient power control.
  • the aim of the invention is to provide a hot gas engine of the type mentioned, in which a structurally simple way a rapid power control without lowering the efficiency is possible.
  • the hot gas engine according to the invention of the type mentioned above is characterized in that for power control by means of the transmission of the linear movement of a drive member in the linear movement of a driven part with a hinged to the input and output part lever is provided, which is associated with an adjustable pivot point, wherein during the motion transmission the bearing point of the lever moves at the pivot point according to a curve.
  • This curve can be any shape - depending on the requirements of the motion transmission or depending on Type of the respective hot gas engine - have.
  • the lever has a given curve defining the set which during the motion transmission over the pivot point, e.g. a role defining this pivot point slides.
  • the curve or backdrop extends in a circular arc; but, of course, other waveforms, e.g. two circular arc segments connected tangentially or an elliptical shape, conceivable for certain applications.
  • the adjustment of the pivot point can be realized when the pivot arm is connected to an adjusting device.
  • the adjusting device is connected via a respective linkage with a pivot arm and symmetrically provided between at least two levers.
  • a spindle drive is provided as the adjusting device.
  • a slotted guide in which the pivot arm opposite end of the linkage is slidably and fixably added, the position of the swing arm can be changed in a simple and quick way and thus the performance of the hot gas engine can be adjusted.
  • a ⁇ -hot gas engine with the generally higher mechanical efficiencies are achieved as with the other types of hot gas engines, are the displacer and the working piston in a common cylinder, which theoretically makes it possible that the entire gas mass is during the expansion phase in the hot or during the compression phase in the cold room.
  • the working piston is associated with the lever with an adjustable pivot point and the displacer is associated with a lever with a non-adjustable pivot point.
  • this unit is assigned to the lever for an advantageous power control.
  • the drive part is connected in an articulated manner to a piston rod which is connected linearly with the displacer piston or the working piston and guided linearly in a straight line.
  • the displacer on both sides and the working piston on one side have a wave profile that can engage in adjacent heater or radiator surfaces. In this way, much larger surfaces can come into contact with the working gas compared to flat surfaces.
  • the lamellar wave profiles of the displacer are arranged rotated by 90 ° to each other. It is also advantageous for high strength, if the lamellar thin-walled wave profiles of the working piston or heater head are supported on the burner side or coolant side by stiffening ribs.
  • Particularly advantageous in terms of efficiency and minimizing the harmful volume of a hot gas engine is an integration of heater regenerator and radiator surfaces directly into the workspace.
  • a device 1 for the controlled conversion of linear movements wherein a working as a drive part connecting rod 2 is provided, which articulated with a piston rod 3 of a displacer 4 of a Stirling engine (s. Fig. 6 ) connected is. Furthermore, the connecting rod 2 is pivotally connected about an axis 2 'with a lever 5, which has a predetermined control cam in the form of a link 6, in which one about an axis 7' freely rotatable roller 7 as a pivot point for the lever 5 (hereinafter, therefore "Roll lever”) is provided.
  • the other end of the substantially 90 ° angled lever 5 is pivotally connected about an axis 8 'with an output rod 8, to which the linear movement of the displacer piston rod 3 is transmitted.
  • the output rod 8 is in turn mounted linearly, but rotated with respect to the linear movement of the displacement piston rod 3 by 90 °.
  • the bearing point moves of the lever 5, depending on the position of the displacer piston rod 3 and the connecting rod 2 along a curve 6 ', which is defined by the link 6.
  • One of the essential quantities for determining the transmission of movement between the displacement piston rod 3 and the output rod 8 is the distance LR (see FIG. Fig. 2 ) between the axis of rotation 8 'between the lever 5 and the output rod 8 and the axis of rotation 7', on which the roller 7 is rotatably mounted.
  • ⁇ x arccos LR x 2 + a 2 2 ⁇ a 2 + R 2 * LR x respectively.
  • Fig. 3 the displacement piston rod 3 is shown in its uppermost position, wherein it can be seen that the roller 7 neither in this extreme position nor in the in Fig. 1 shown extreme position at the edge of the gate 6 comes to rest.
  • a Stirling or hot air motor 10 is shown with controlled linear motion transmission devices 1 from a respective displacer rod 3 to an associated output rod 8.
  • the Stirling engine 10 has two displacement units 11, in each of which a displacer piston 4 is reciprocated.
  • the movement described by the respective lever 5 can be changed by adjusting the position of the roller 7, which is adjustable via a pivot arm 12.
  • a linkage 13 is provided in each case, which is adjustable by means of a common spindle drive 14 via a setting wheel 15.
  • the position of the rollers 7 can be changed in such a way that a change in performance occurs, as can be seen from FIGS FIGS. 11a to 11d is apparent.
  • a combustion chamber 18 (see. Fig. 6 ) of the displacer 11 is introduced via a line 19 via a heat exchanger 20 with the aid of the heat of the supplied via a line 21 heated exhaust fresh air for combustion, which, after it has passed through the heat exchanger 20, can escape via the line 22 into the environment ,
  • Fig. 6 is a section of the Stirling engine 10 according to the line VI-VI in Fig. 5 shown; In this case, a wave-like profile 23 of the radiator surfaces 24 and heater surfaces 25 can be seen, wherein These heat exchange surfaces 24, 25 may be made of ceramic, for example.
  • the heater surfaces 25 connect to the combustion chambers 18, in each of which a burner 26 is provided for heating or combustion of introduced via the lines 19, already preheated fresh air.
  • the displacer piston 4 shifts the working gas between a hot chamber 27 and a cool chamber 28, wherein the central part 37 of the displacer 4 includes the regenerator (see. Fig. 5 ).
  • Fig. 6 Furthermore is in Fig. 6 It can be seen that, for guiding the displacement piston rod 3, the connecting rod 2 is connected by means of a joint 3 'guided in a straight guide 30.
  • a crankshaft 31 for transmitting movement from the output rod 8 to a crankshaft 31 (cf. Fig. 5 ) is a kind of crank drive 32 ( Fig. 6 ) intended.
  • Fig. 7 is a perspective view of the Stirling engine 10 with the displacers 11 associated devices 1 for the controlled transmission of the linear movements of the connecting rod 3 is shown. Furthermore, the adjustment mechanism for the rollers 7 can be seen on the rods 13, which allows adjusting the position of the rollers 7 by rotating the adjusting wheel 15, which in turn a power control of the Stirling engine 10 is controlled by the changed reciprocating motion of the displacer 4 ,
  • Fig. 8 an exploded view of the displacer unit 11 is shown.
  • the straight guide 30 for receiving the articulated connection between the displacement piston rod 3 and the connecting rod 2, which is screwed to the radiator-side cover 33 are shown in the radiator cover region.
  • the intended for the cooling heat exchange surface 24 is connected via a plurality of screws 34 with the radiator-side cover 33.
  • a cylinder 35 is provided, on which the conduit 17 is provided for the spatial connection with the working cylinder 16.
  • the hot heat exchange surface 25 has a wave-like surface profile which is bilateral, preferably 90 °, for stability reasons, in order to achieve the largest possible surface area which promotes heat exchange between the hot or cool surface and the displacement chamber.
  • the displacer piston 10 consists of three individual parts, wherein on a regenerator 37 each profile halves 38 are screwed, which have the mentioned wave profile, which is provided for mutual engagement with the wave profiles of the heat exchange surfaces 24 and 25 respectively.
  • the regenerator disc 37 which may be made of ceramic, for example, has slit-shaped cavities 37 ', in which a regenerator material, eg sintered steel wool with an approximately 60-70% porosity, is embedded.
  • FIGS. 11a to 11d four different settings of the position of the roller 5 supporting roller 7 are shown in four graphs.
  • a pV diagram I a representation II of the changing volumes during a full reciprocation of the working or displacement piston, a representation III of the piston positions of the working piston and the displacer over a full cycle and a normalized representation IV of the piston position the working and displacement piston with respect to their adjustment of the roller 7 according to possible extreme positions.
  • Fig. 11d is shown in the representation III that the stroke of the displacer can even be moved into the negative region (curve 41), resulting in a further reduction of the displacer volume (see the illustration II in Fig. 11d ) and thus leads to a further reduction in power, resulting in a setting according to Fig. 11d a reduction in output to 6.7 kW results, cf. also the pV-diagram I in Fig. 11d ,
  • Fig. 12 is a view of a ⁇ -Stirling engine 50 is shown with a device 1 for the controlled conversion of linear movements, over two blowers 51 fresh air via a line 19 into a combustion chamber 18 is introduced via a heat exchanger 20 with the aid of the heat of the Line 21 is supplied exhaust gas is heated. The exhaust gas supplied to the heat exchanger 20 then leaves the ⁇ -Stirling engine 50 in the direction of the environment via lines 22.
  • FIG. 13 In the partially broken-away side view of the ⁇ -Stirling engine 50 in FIG Fig. 13 are the displacer 4 and a piston 52 can be seen. On the crankshaft 53, the power generated by the ⁇ -motor 50 can be removed.
  • Fig. 14 the ⁇ -motor 50 is shown, in which the displacer 4 and the piston 52 are provided in a common cylinder 54, whereby it is theoretically possible that approximately the entire gas mass during the expansion phase in the hot space 55 or during the compression phase in cold room 56 is located.
  • Both the displacement piston rods 3 and the working piston rods 3 ' are connected to a roller lever 5, wherein the rollers 7' of the roller lever 5 ', which are associated with the displacement piston rods 3, are rigidly arranged.
  • the rollers 7, which are associated with the working piston 52 arranged adjustable by means of a sliding guide 57.
  • a two spiral-shaped recesses 58 having disc 59 is provided, in which the rollers 7 opposite ends 13 'of the linkage 13 are received.
  • This can when twisting a the ends 13 'receiving plate 60, the position of the rollers 7 are adjusted in the rolling levers 5.
  • a discontinuous movement of the displacement piston 5 and the working piston 52 is thus achieved, whereby the thermal cycle can be traversed more ideally in comparison to a sinusoidal piston movement.
  • the achievable mechanical efficiency increases significantly.
  • the slide guide 57 for adjusting the position of the roller 7 of the lever 5 can thus be obtained a structurally simple design for dynamic Hubver selectedung, in which case in particular an approximately efficiency-neutral and fast power control is possible.
  • the wave-shaped surface profile of the working piston 52 are provided in two working piston rods 3 'supply and discharge lines for a cooling liquid (not shown), which flows through the two working piston rods 3'.
  • the working piston 52 is like the displacer 4 according to FIGS FIGS. 9 and 10 built so that a more detailed description of the same can be omitted.
  • Fig. 15 is a ⁇ -Stirling or hot gas engine 50 according to Fig. 14 shown, however, the position of the rollers 7 is changed in the roller levers 5 by means of the link device 57. As a result, an essentially efficiency-neutral and, moreover, rapid power control of the ⁇ -motor 50 can take place (compare, for this purpose, graphic representations in FIGS FIGS. 19a to 19d ).
  • ⁇ -hot gas engine 50 At the in Fig. 16 shown ⁇ -hot gas engine 50 are the rollers 7 of the roller lever 5 in an inner extreme position, resulting in a power-minimizing position of the rollers 7 results.
  • Fig. 17 is a perspective broken view of the ⁇ -Stirling engine according to the FIGS. 12 to 16 shown, in particular, the compact arrangement of the roller lever 5 and the heat exchanger 20 can be seen.
  • a linear crank 61 introduced by the output rods 8 of the devices 1 linear movements in a rotational movement of the crankshaft 53 implemented.
  • FIGS. 19a to 19d are in four graphs four different settings of the position of the roller lever 5 supporting roller 7 according to the in the FIGS. 12 to 18 shown ⁇ -stirling engine 50.
  • each of the FIGS. 19a to 19d a pV diagram I, a graph II of the changing volumes during a full reciprocation of the working or displacement piston 52, 4, a representation III of the piston positions of the working piston 52 and the displacer 4 over a full cycle, and a representation IV of the torque curve of a single-cylinder ⁇ -Stirling engine, a two-cylinder ⁇ -engine according to the FIGS. 12 to 18 , and a four-cylinder ⁇ -motor on.
  • FIGS. 20 and 21 For example, a dual-action, four-cylinder, hot gas engine 72 with controlled linear motion conversion devices 1 is shown. Rolling levers 5 with adjustable rollers 7 are also shown here as pivot points for setting the power, with working and displacer pistons being combined in a unit 73 in this constructively particularly simple design of the hot gas engine 72. Due to the simple design results compared to the ⁇ -motor, a lower mechanical efficiency and the power control causes additional efficiency losses. The motion transmission takes place here via the output rods 8 using a conventional crank 74th
  • the device 1 can also be used for power control in any other hot gas engine become.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Polarising Elements (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
EP01940002A 2000-05-29 2001-05-29 Heissgasmotor Expired - Lifetime EP1285160B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0093600A AT411844B (de) 2000-05-29 2000-05-29 Heissgasmotor
AT9362000 2000-05-29
PCT/AT2001/000169 WO2001092708A1 (de) 2000-05-29 2001-05-29 Heissgasmotor

Publications (2)

Publication Number Publication Date
EP1285160A1 EP1285160A1 (de) 2003-02-26
EP1285160B1 true EP1285160B1 (de) 2008-04-16

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ID=3683251

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EP01940002A Expired - Lifetime EP1285160B1 (de) 2000-05-29 2001-05-29 Heissgasmotor

Country Status (14)

Country Link
US (1) US6729131B2 (xx)
EP (1) EP1285160B1 (xx)
JP (1) JP2003535262A (xx)
KR (1) KR100743954B1 (xx)
CN (1) CN1208544C (xx)
AT (2) AT411844B (xx)
AU (2) AU7372201A (xx)
BR (1) BR0111662A (xx)
CA (1) CA2405174A1 (xx)
DE (1) DE50113863D1 (xx)
EA (1) EA003980B1 (xx)
HK (1) HK1052956B (xx)
MX (1) MXPA02011800A (xx)
WO (1) WO2001092708A1 (xx)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
JP4246202B2 (ja) * 2003-05-13 2009-04-02 本田技研工業株式会社 多段スターリング機関
FR2881513B1 (fr) * 2005-02-03 2007-04-06 Sagem Machine a froid fonctionnant suivant le cycle de stirling
CN101463775B (zh) * 2007-12-19 2011-06-15 孔令斌 斯特林可逆热机
US8096118B2 (en) * 2009-01-30 2012-01-17 Williams Jonathan H Engine for utilizing thermal energy to generate electricity
DE102012107064B4 (de) 2011-12-17 2014-05-22 Andre Zimmer Heißgasmotor
MD679Z (ro) * 2013-03-01 2014-04-30 ИНСТИТУТ ЭЛЕКТРОННОЙ ИНЖЕНЕРИИ И НАНОТЕХНОЛОГИЙ "D. Ghitu" АНМ Maşină termică în baza ciclului Stirling
WO2015139104A2 (pt) * 2014-03-21 2015-09-24 Hirosi Suzuki Motor stirling de configuração delta
CN103925110B (zh) * 2014-04-30 2015-11-04 郭远军 一种v型高低压动力设备及其做功方法
USD923573S1 (en) * 2020-11-22 2021-06-29 Yi Zhang Stirling engine
USD923572S1 (en) * 2020-11-22 2021-06-29 Yi Zhang Stirling engine

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Also Published As

Publication number Publication date
BR0111662A (pt) 2003-05-20
DE50113863D1 (de) 2008-05-29
KR100743954B1 (ko) 2007-07-30
HK1052956A1 (en) 2003-10-03
EA003980B1 (ru) 2003-12-25
AT411844B (de) 2004-06-25
WO2001092708A1 (de) 2001-12-06
CA2405174A1 (en) 2002-10-07
US20030167766A1 (en) 2003-09-11
KR20030005302A (ko) 2003-01-17
US6729131B2 (en) 2004-05-04
ATA9362000A (de) 2003-11-15
EP1285160A1 (de) 2003-02-26
HK1052956B (zh) 2008-11-28
AU2001273722B2 (en) 2004-10-07
JP2003535262A (ja) 2003-11-25
AU7372201A (en) 2001-12-11
EA200201297A1 (ru) 2003-04-24
MXPA02011800A (es) 2003-04-25
CN1441875A (zh) 2003-09-10
ATE392545T1 (de) 2008-05-15
CN1208544C (zh) 2005-06-29

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