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EP3045656B1 - Multifunction rotary machine with deformable rhomb - Google Patents

Multifunction rotary machine with deformable rhomb Download PDF

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Publication number
EP3045656B1
EP3045656B1 EP16151876.6A EP16151876A EP3045656B1 EP 3045656 B1 EP3045656 B1 EP 3045656B1 EP 16151876 A EP16151876 A EP 16151876A EP 3045656 B1 EP3045656 B1 EP 3045656B1
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EP
European Patent Office
Prior art keywords
cavities
machine
central shaft
enclosure
rotor
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EP16151876.6A
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German (de)
French (fr)
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EP3045656A1 (en
Inventor
Vincent Genissieux
Jean-Thomas Collomb
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/40—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and having a hinged member
    • F01C1/44—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and having a hinged member with vanes hinged to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
    • F01C11/002—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle
    • F01C11/004—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle and of complementary function, e.g. internal combustion engine with supercharger

Definitions

  • the present invention relates to a rotary machine with deformable rhombus.
  • a rotary machine generally comprises a stationary assembly or stator and a movable assembly or rotor having a diamond shape articulated at its vertices and rotating around its center, able to deform during its rotation.
  • Each side of the diamond determines with the internal profile of the stator having a generally oval shape, a chamber of variable volume during the movement of the rotor.
  • the sides of the articulated diamond are materialized by plates called pistons having, for the most part, an outer surface of curvilinear shape. These pistons are sometimes provided, in their area of contact with the internal profile of the stator of sealing segments.
  • Such a machine can be used as a combustion engine, turbine, compressor, pump, fan, etc. It has the advantage of having a fixed center of gravity, thus being able to avoid vibrations, to be able to reach compressions equivalent to those of piston engines, to have a higher flow rate than piston engines, to have a higher pressure ratio to the turbines and to be simpler than most generally known machines performing the same functions.
  • MRLD Deformable diamond rotating machines
  • a stator generally consisting of a cylindrical non-circular enclosure (a cylinder whose non-circular direction is a cylinder) outside the diamond-shaped rotor and a plurality (the most often four) of rotating elements articulated with each other at their adjacent edges in a pivot connection of an axis parallel to the longitudinal axis of the chamber, each of the rotary elements delimiting with the inner wall of the chamber a chamber or cavity with variable volume.
  • MRLDs can also be used as pumps. This is described for example in patents US 3,295,505 (A. Jordan ) and EP 1 092 838 A2 (J. Sanchez Talero ) and in patent applications WO 86/00370 (I. Contiero ) and WO 2005/106204 (Okulov, P. ). More particularly, the document WO 86/00370 describes a concept of MRLD comprising four external chambers with variable volume, defined between the outer surface of the rotor, the inner surface of the stator, and an internal chamber of variable volume defined inside the deformable rotor, these chambers being defined axially by two lateral closing flanges. In a variant, the same fluid is conveyed between the internal chamber functioning as a compressor and the external chambers operating as a motor.
  • a MRLD has several more or less independent cavities, which can be used in different ways.
  • the patent application FR 2 911 631 (Ph. Kuzdzal) ) discloses an internal combustion engine or pressurized gas injection engine having, in addition to external cavities limited by the inner wall of the enclosure and the articulated rotary members, four internal cavities each delimited by the inner walls of adjacent rotating elements and the outer ones of a central tree.
  • the engine comprises two other internal cavities each located at a joint between two movable elements for lubricating the segments of the joint.
  • the lubricating oil can also be used to cool the engine and, in this case, the internal cavities communicate with each other by being connected by oil circulation channels.
  • the oil is fed into an internal lubrication / cooling circuit of the engine by a pump, the internal cavities being used only to open and close valves of the internal circuit of the engine for cooling the engine in a closed circuit. It should be noted that the variation in volume of the internal cavities during a complete cycle of the machine is small, but probably sufficient for a closed circuit operation of the lubricant.
  • the invention relates to a rotary deformable diamond machine (MRLD) comprising a stator 2 having a generally tubular shape of approximately oval section, whose profile is in accordance with the geometric rules imposed by the deformation of the diamond during its rotation and of which the inner surface defines an enclosure 1 for receiving a rotor 3 which is a deformable rhombus 4.
  • MRLD rotary deformable diamond machine
  • the deformable rhombus 4 is a set of four pistons 6 interconnected by pivot links, materialized by pivoting joints 7, and which form a chain closed on itself.
  • the rotor 3 is generally the rotating part of the machine, but it is possible, in a variant, to drive the chamber 1 in rotation which then rotates relative to the rhombus 4 fixed in rotation but whose sides are deformed (the side segment that connects, in a plane perpendicular to the axis of rotation of the machine, the axes of two adjacent pivot links).
  • the projections of axes of pivot connections of the pistons in a plane perpendicular to the axis of rotation of the machine represent the vertices 5 of the diamond.
  • the segment that connects two opposing vertices 5 forms a diagonal of the rhombus. It will be understood in the following, also diagonally a part or mechanical connection built according to this segment.
  • a piston 6 is a part having a shape of cylinder portion of director parallel to the axis of rotation of the machine.
  • the surfaces located at the two ends of this piece each provide a part of a rotational axis pivot connection parallel to the axis of rotation of the machine.
  • the segment that connects two midpoints of opposite sides of the rhombus, including two opposed pistons, forms a median of the rhombus.
  • median also a part or mechanical connection built according to this segment.
  • rotation shaft 57 or central shaft of the machine, it comprises a part or a set of mechanical parts for recovering the rotational movement of the rotor or the stator via a suitable mechanical transmission system.
  • the machine also comprises two lateral flanges 12, 13 of closure ( Fig. 6a ), arranged perpendicularly to the rotation shaft of the machine and bearing against the front and rear faces of the stator and the rotor.
  • the extrados 9 of the piston comprises the outer surface of the piston 6, located outside the rhombus 4, and the lower surface 11 of the piston, the inner surface of the piston 6, located at the inside the diamond 4.
  • the machine comprises the revolution cylinder closed by the side flanges and encompassing the outer profile of the stator of the machine according to a conventional embodiment or encompassing the most eccentric piece relative to the axis of rotation.
  • the invention uses the property of the deformable diamond rotary machine provided with means of the invention to create cavities whose volume varies during the deformation of the rhombus, these external cavities and internal to the rotor (or rhombus) can be realized in different ways.
  • an external cavity 8 (it is understood external to the rotor 3) of work is formed by an extrados peripheral cavity 14.
  • Such a cavity extrados peripheral 14 is formed by the extrados face 9 of one of the pistons 6 of the rhombus 4 against the inner wall of the stator 2 and the closing flanges 12,13 on either side of the machine.
  • the figure 1 shows the example of the extrados peripheral cavity 14 left. In the initial position ( figure 1a ), the peripheral cavity extrados in the lower part is initially empty, or at minimum volume.
  • the following figures (1b to 1f) show the evolution of this cavity (shown dashed) when the diamond 4 rotates in the direction indicated in the figure.
  • the figure does not represent the filling devices.
  • the figure 1b shows the beginning of the admission.
  • the figure 1c shows a state of the admission phase where the cavity increases in volume.
  • the left extrados peripheral cavity 14 has reached its maximum volume; preferably, the diamond 4 then takes the form of a square.
  • the volume of the cavity decreases and the fluid is evacuated.
  • the delivery devices are not shown in this figure.
  • the left extrados peripheral cavity 14 reaches its minimum volume or empties completely.
  • Each extrados peripheral cavity 14 performs a cycle by half-turn.
  • the displacement of such a cavity represents approximately 1/50 th of the machine volume, ie a displacement of 4/50 th of the machine volume per revolution.
  • these extrados peripheral cavities 14 can be accessed by channels made in the pistons 6, or in the pivots 7 or in the stator 2 or in the lateral flanges 12, 13 as will be explained later.
  • extrados peripheral cavities 14 may have the same function (pump, compressor, motor, etc.) or not.
  • a cavity can receive a pressurized gas that sets the rotor in motion, while the others work as a compressor or as a pump. If several cavities work as a pump, they can work with the same fluid or with a different fluid.
  • the extrados peripheral cavities 14 using the same inner wall of the stator there is a risk of contamination between the different fluids extrados peripheral cavities 14, because there will always be a permanent film that is formed on the inner wall.
  • the machine illustrated in figure 1 has a number of extrados left peripheral cavities 14 of 2 or 4 per turn, a number of right extrados peripheral cavities 14 of 2 per turn, and a central cavity, which makes an instantaneous total number of cavities, which can fulfill three functions.
  • an external cavity is an external junction cavity defined by the space between two pistons 6 connected to the rotor 3 or which have a pivot connection (or pivot joint) 7 in common and the inner wall of the stator 2 (or enclosure 1), four cavities being thus defined in the space between the rotor 3 and the stator 2.
  • the stator 2 may have an enclosure 1 of oval or circular shape. In the case where the enclosure is circular, it has a longitudinal axis which is common with that of rotation of the machine and the cavity defined with the lateral closure flanges is an extrados circular cavity 15. Such an extrados circular cavity 15 performs a cycle by half turn of rotation of the rotor, and the four cavities succeed one another.
  • the displacement of the extrados circular cavity 15 may represent 1/100 th of the volume of the machine, ie a displacement of 2/25 th of the machine volume per revolution if the cycles performed at each half-turn and the four cavities are accumulated on the same function.
  • the guide of the deformation of the rotor 3 is formed by a central shaft of oval section 16.
  • the volume of this cavity varies according to the position of the rotor 3, in particular, it grows from a position where the volume is minimal ( Fig. 2a ) at a fluid inlet position ( Fig. 2b ), reaches its maximum volume in maximum deformation position of the diamond 4 ( Fig. 2c ), to decrease further and compress the fluid ( Fig.
  • these circular cavities can be accessed extrados 15 by channels made in the pistons 6, or in the pivots 7 or in the stator 2 or in the lateral flanges 12, 13 closing.
  • this variant embodiment comprises a constructive simplification associated with a significant reduction in the manufacturing cost, insofar as the stator 2 and the enclosure 1 can be obtained directly from a standard profile of circular section, avoiding machining operations by removal of material.
  • the machine illustrated in figures 2 has a number of extrados circular cavities of 8 per turn, a number of intrados peripheral cavities 17 of 8 per turn, which makes an instantaneous total number of 8 cavities, which can fulfill four functions.
  • a working cavity is formed by an internal cavity of the rotor 3.
  • This cavity uses a profile internal to the diamond 4, this profile being of the MRLD type. , ie a profile which respects the laws of deformation of the diamond, which is, in a first variant illustrated with the Figures 3a to 3d associated with the inner surface called the intrados face 11 of the pistons 6.
  • the figure 3a shows an example of four peripheral intrados cavities 17, two on the left and two on the right, as seen with respect to a vertical axis passing through the center of the rotor 3. It is also possible to use, alternatively or at the same time, the peripheral cavity left intrados or the right one. Thus, it is possible, as in the case of extrados peripheral cavities 14, up to four peripheral cavities intrados 17 simultaneous work, which can perform different functions, but which share a common element, the central shaft, likely to lead cross-contamination.
  • the profile that is outside the diamond provides a surface common to all extrados peripheral cavities. In the same way, the profile which is inside the rhombus offers a surface common to all the intrados peripheral cavities.
  • the dynamic seal between the flanges of the machine and the pistons may allow cross-contamination.
  • the extrados cavities 14 left and 17 left intrados are in phase opposition (the volume of one increases, while the volume of the other decreases with the rotation of the diamond 4, and reaches a maximum value while the value the other is minimal) and it is the same for the extrados cavities 14 and intrados 17 right.
  • the cubic capacity of a peripheral intrados cavity 17 is slightly lower than that of the extrados peripheral cavity 14, this difference in displacement is essentially related to the thickness of the pistons.
  • the ratio of the cubic capacity of the intrados cavities to that of the extrados cavities is less than 1.
  • these peripheral intrados cavities 17 can be accessed by channels made in the pistons 6, or in the pivots 7 or in the stator 2 or in the lateral flanges 12, 13 of closure.
  • the machine illustrated in figures 3 has two left extrados peripheral cavities 14, two straight extrados peripheral cavities 14, two left intrados peripheral cavities 17 and two right intrados peripheral cavities 17, which makes an instantaneous total number of 8 cavities, which can fulfill four functions.
  • the internal cavities are intrados circular cavities 18, a cavity being formed by the space between two pistons 6 connected (or having a pivot connection 7 in common), a cylinder of revolution 19 internal to the diamond 4, the longitudinal axis is common to the central shaft of the machine.
  • a circular cavity intrados 18 performs a cycle by half-turn and the four cavities succeed one another.
  • the displacement of such a circular intrados cavity 18 represents approximately 1/100 th of the volume of the machine, ie a displacement of 2/25 th of the volume of the machine per revolution if the four cavities are combined and both cycles per revolution.
  • the machine illustrated in figures 4 has two left extrados peripheral cavities 14, two extrados straight peripheral cavities 14, and four intrados circular cavities 18, which makes an instantaneous total number of 8 cavities, which can fulfill four functions.
  • the rotary deformable diamond machine of the invention makes it possible, by virtue of its construction with at least three variable volume cavities, to perform several functions chosen from those of: motor, pump, compressor or turbine, or a combination thereof a fluid exchange being established with one or more external circuits to the machine, as well as between the various variable volume cavities thereof.
  • the exchange zones (or means of transfer or exchange) of fluid within the machine are illustrated in the Figures 5 to 9 . These exchange zones are inlet or discharge ports communicating, on the one hand, with fluid circuits external to the machine and, on the other hand, with channels formed within its elements opening into external cavities. or internal of the machine, as will be explained later.
  • the figure 5 illustrates four radial orifices 51 of admission or discharge of the fluid in the external cavities of the machine, these orifices are formed on the outer surface of the stator 2 and radially cross its thickness to open into the outer cavities 8 of the machine.
  • FIGS. 6a to 6c illustrate orifices made in the lateral flanges 12, 13 of closure of the machine, in particular in the form of axial orifices and peripheral lights.
  • two axial orifices 52 allow admission of the fluid axially (in the direction of the longitudinal axis of the machine) inside the rotor, these orifices may advantageously be provided with valves ensuring their closure and respectively their opening.
  • the two lateral flanges 12, 13 are also each provided with four peripheral lights 53 which are slots having a generally half-moon shape, their dimensions and their arrangement being made so that, at least in one of the positions of the rotor 3, these peripheral lights 53 are completely obstructed by the pivoting joints 7 of the rotor 3.
  • the figure 6b illustrates such a position where the four peripheral lights 53 are covered by the four pivoting joints 7 of the rotor 3.
  • the peripheral lights 53 are gradually exposed and the surface of the exchange zone increases with the angle of rotation to a position where they are completely open ( Fig. 6c ), then the section of the fluid exchange zone then decreases to the position illustrated in FIG. figure 6b .
  • This solution provides progressive and automatic opening and closing of the exchange zone between a fluid circuit upstream or downstream of the machine and the external cavities 8 of the machine, all the closures and orifice openings being in phase. between them.
  • FIGS. 7a and 7b illustrate another alternative embodiment of the fluid exchange zones inside the machine, in particular via inlet or discharge channels 54 made at the pivoting joints 7 of the rotor 3.
  • the rotation which takes place between the pistons 6 and their pivots 7 allows an opening and an automatic closing of these channels 54 extending radially and to a certain depth along the pivoting joint 7. It is noted that the opening and closing of the channels belonging to two pivoting joints opposing (facing each other) are in phase.
  • the Figures 8a to 8c illustrate another alternative embodiment of the fluid exchange zones, this exchange being done by channels 55 made in a radial direction in the pistons 6.
  • the figure 8a illustrates the rotor 3 of the machine where each piston 6 comprises two through holes, the fluid passage can be made in both directions (inside out and vice versa).
  • the figure 8b illustrates an example of a rotor in which each piston comprises a through orifice made so as to be able to receive a closing valve ensuring the passage of the fluid from the inside to the outside of the rotor (in the direction of the arrows of the 8B ).
  • the figure 8c illustrates an example similar to the previous one, but where the passage of the fluid is allowed from the outside towards the inside of the rotor (in the direction of the arrows of the fig.8c ).
  • the figure 9 illustrates another embodiment of axial channel 56 for admission or discharge of fluid, the latter being formed in the central shaft or rotation 57 of the machine.
  • the internal cavity of the rotation shaft 57 comprises a first axial channel 56 whose inlet orifice is at a first end 58 of the shaft and the outlet orifice 59 at the center plane of the machine, and a second axial channel 56 'which starts from this middle plane and goes to the second end 60 of the rotation shaft 57.
  • Orifices preferably provided with valves, allow the admission of the fluid conveyed by the central shaft in the cavities it passes through, or the discharge of the cavity fluid via the axial channel of the shaft to an external circuit of the machine.
  • the fluid inlet and outlet channels in various cavities of the machine may have so-called free sections (eg orifices, slots or slots) which are successively obstructed, then open when the rotor is rotated, or they may be provided with valves or valves (possibly spring return) actuated opening / closing by a fluid pressure difference, or, in another embodiment, they can be provided with closing / opening devices controlled by electric actuators or electromechanical (eg solenoid valves, controlled valves, etc ).
  • a combination of the means for closing / opening the channels can also be envisaged, for example said free sections may furthermore comprise a controlled device (such as a rotational shutter with controlled rotation) that can, for example, make a variation of the surface of the section. of the exchange zone.
  • the technical characteristics of the machine are given below as an example.
  • the machine has a very compact size. Indeed, the length (along the long axis of the stator cross section) is about 70 mm, the width (along the minor axis of the stator cross section) is about 60 mm and the depth (according to the longitudinal axis) is about 40 mm.
  • An improved, more compact and lighter machine can be designed for higher rotational speeds, while providing it with sealing systems at its fluid exchange zones. Conversely, it is also possible to consider a larger dimensioning of the machine, when it increases the pistons to increase the moment of inertia of the diamond around the axis of rotation.
  • the dimensional and geometric tolerances are of the order of a hundredth of a millimeter in order to limit leaks.
  • the maximum volume of an extrados peripheral cavity 14 is about 5 cm 3 .
  • the dead volume of an extrados peripheral cavity 14 is negligible and depends essentially on the inlet and outlet pipes, ie about 0.1 cm 3 for a pipe of the air pump and 1 cm 3 for a pipe of the water turbine.
  • the machine is waterproof vis-à-vis the outside because it is satisfied with static seals (no relative movement of parts).
  • the internal sealing of the machine is essentially by reduced clearance, large areas of lamination of leaks and the use of deformations of pressurized parts to reduce play and improve sealing.
  • the machine can be made with plastic materials with a low coefficient of friction to ensure the lightness of the assembly, because the pressure is low and the parts have a very robust design.
  • the machine can cope with water problems in air pumps, thanks in particular to dead volumes, which serve as pneumatic dampers to prevent hydraulic shock when the volume decreases.
  • dead volumes which serve as pneumatic dampers to prevent hydraulic shock when the volume decreases.
  • the pressure increasing strongly, the pistons and the flanges deform to release a fluid passage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

Domaine de l'inventionField of the invention

La présente invention concerne une machine rotative à losange déformable. Une telle machine comporte généralement un ensemble fixe ou stator et un ensemble mobile ou rotor ayant une forme de losange articulé à ses sommets et tournant autour de son centre, apte à se déformer lors de sa rotation. Chaque côté du losange détermine avec le profil interne du stator ayant une forme générale ovale, une chambre de volume variable lors du mouvement du rotor. Les côtés du losange articulé sont matérialisés par des plaques appelées pistons ayant, pour la plupart, une surface extérieure de forme curviligne. Ces pistons sont parfois munis, dans leur zone de contact avec le profil interne du stator de segments d'étanchéité.The present invention relates to a rotary machine with deformable rhombus. Such a machine generally comprises a stationary assembly or stator and a movable assembly or rotor having a diamond shape articulated at its vertices and rotating around its center, able to deform during its rotation. Each side of the diamond determines with the internal profile of the stator having a generally oval shape, a chamber of variable volume during the movement of the rotor. The sides of the articulated diamond are materialized by plates called pistons having, for the most part, an outer surface of curvilinear shape. These pistons are sometimes provided, in their area of contact with the internal profile of the stator of sealing segments.

Une telle machine peut être utilisée en tant que moteur à combustion, turbine, compresseur, pompe, ventilateur, etc. Elle présente l'avantage d'avoir un centre de gravité fixe, pouvant ainsi éviter les vibrations, de pouvoir atteindre des compressions équivalentes à celles des moteurs à pistons, d'avoir un débit plus important que les moteurs à pistons, d'avoir un rapport de pression supérieur aux turbines et d'être plus simple que la plupart des machines généralement connues remplissant les mêmes fonctions.Such a machine can be used as a combustion engine, turbine, compressor, pump, fan, etc. It has the advantage of having a fixed center of gravity, thus being able to avoid vibrations, to be able to reach compressions equivalent to those of piston engines, to have a higher flow rate than piston engines, to have a higher pressure ratio to the turbines and to be simpler than most generally known machines performing the same functions.

Etat de la techniqueState of the art

Les machines rotatives à losange déformable (MRLD) possèdent un stator généralement constitué d'une enceinte cylindrique non circulaire (on comprend un cylindre dont la courbe directrice n'est pas un cercle) extérieure au rotor en forme de losange et une pluralité (le plus souvent quatre) d'éléments rotatifs articulés entre eux au niveau de leurs bords adjacents selon une liaison pivot d'un axe parallèle à l'axe longitudinal de l'enceinte, chacun des éléments rotatifs délimitant avec la paroi intérieure de l'enceinte une chambre ou cavité à volume variable. Ces machines ont été décrites depuis longtemps, mais elles ne sont guère utilisées. A l'instar du moteur Wankel, bien connu de l'homme du métier, ces machines avaient été imaginées d'abord comme moteur à combustion. Le brevet FR 1 404 453 (J. Lemaitre ), le brevet US 3,196,854 (A. Novak ), le brevet FR 2 145 133 (J. Martin Artajo ) la demande de brevet WO 01/88341 (P. Szorenyi ), le brevet CA 997998 (E. Steinbrink ) et la demande de brevet FR 2 493 397 (J.P. Ambert ) décrivent l'idée et la conception théorique d'un tel moteur. Les demandes de brevet WO 2004/070169 et US2004079321 (G. Saint-Hilaire ) décrivent un moteur à combustion interne rotatif à losange déformable en détaillant sa structure. D'autres moteurs à explosion de type MRLD sont décrits par exemple dans les documents EP 1 295 012 B1 (Nivesh SA ), et US 3,387,596 (L. Niemand ).Deformable diamond rotating machines (MRLD) have a stator generally consisting of a cylindrical non-circular enclosure (a cylinder whose non-circular direction is a cylinder) outside the diamond-shaped rotor and a plurality (the most often four) of rotating elements articulated with each other at their adjacent edges in a pivot connection of an axis parallel to the longitudinal axis of the chamber, each of the rotary elements delimiting with the inner wall of the chamber a chamber or cavity with variable volume. These machines have been described for a long time, but they are hardly used. Like the Wankel engine, well known to those skilled in the art, these machines had been imagined first as a combustion engine. The patent FR 1 404 453 (J. Lemaitre ), the patent US 3,196,854 (A. Novak ), the patent FR 2 145 133 (J. Martin Artajo ) the patent application WO 01/88341 (P. Szorenyi ), the patent CA 997998 (E. Steinbrink ) and the patent application FR 2 493 397 (JP Ambert ) describe the idea and theoretical design of such an engine. Patent applications WO 2004/070169 and US2004079321 (G. Saint-Hilaire ) describe a rotating internal combustion engine with deformable rhombus by detailing its structure. Other MRLD type explosion engines are described for example in the documents EP 1 295 012 B1 (Nivesh SA ), and US 3,387,596 (L. Niemand ).

Il a été reconnu très tôt que les MRLD peuvent aussi servir comme pompes. Cela est décrit par exemple dans les brevets US 3,295,505 (A. Jordan ) et EP 1 092 838 A2 (J. Sanchez Talero ) et dans les demandes de brevet WO 86/00370 (I. Contiero ) et WO 2005/106204 (P. Okulov ). Plus particulièrement, le document WO 86/00370 décrit un concept de MRLD comportant quatre chambres externes à volume variable, définies entre la surface externe du rotor, la surface interne du stator, ainsi qu'une chambre interne à volume variable définie à l'intérieur du rotor déformable, ces chambres étant délimitées axialement par deux flasques latéraux de fermeture. Dans une variante, un même fluide est véhiculé entre la chambre interne fonctionnant comme compresseur et les chambres externes fonctionnant comme moteur.It was recognized early on that MRLDs can also be used as pumps. This is described for example in patents US 3,295,505 (A. Jordan ) and EP 1 092 838 A2 (J. Sanchez Talero ) and in patent applications WO 86/00370 (I. Contiero ) and WO 2005/106204 (Okulov, P. ). More particularly, the document WO 86/00370 describes a concept of MRLD comprising four external chambers with variable volume, defined between the outer surface of the rotor, the inner surface of the stator, and an internal chamber of variable volume defined inside the deformable rotor, these chambers being defined axially by two lateral closing flanges. In a variant, the same fluid is conveyed between the internal chamber functioning as a compressor and the external chambers operating as a motor.

Une MRLD dispose de plusieurs cavités plus ou moins indépendantes, et qui peuvent être utilisées de différentes manières. La demande de brevet FR 2 911 631 (Ph. Kuzdzal ) décrit un moteur à explosion ou à injection de gaz sous pression possédant, en plus des cavités externes limitées par la paroi intérieure de l'enceinte et les éléments rotatifs articulés, quatre cavités internes délimitées chacune par les parois intérieures d'éléments rotatifs adjacents et celles extérieures d'un arbre central. De plus, le moteur comprend deux autres cavités internes situées chacune au niveau d'une articulation entre deux éléments mobiles, destinées à lubrifier les segments de l'articulation. L'huile de lubrification peut être également utilisée pour refroidir le moteur et, dans ce cas, les cavités internes communiquent entre elles en étant reliées par des canaux de circulation de l'huile. L'huile est amenée dans un circuit interne de lubrification/refroidissement du moteur par une pompe, les cavités internes étant utilisées seulement pour ouvrir et fermer des clapets du circuit interne du moteur permettant de refroidir le moteur à explosion en circuit fermé. Il est à noter que la variation de volume des cavités internes au cours d'un cycle complet de la machine est faible, mais probablement suffisante pour un fonctionnement en circuit fermé du lubrifiant.A MRLD has several more or less independent cavities, which can be used in different ways. The patent application FR 2 911 631 (Ph. Kuzdzal) ) discloses an internal combustion engine or pressurized gas injection engine having, in addition to external cavities limited by the inner wall of the enclosure and the articulated rotary members, four internal cavities each delimited by the inner walls of adjacent rotating elements and the outer ones of a central tree. In addition, the engine comprises two other internal cavities each located at a joint between two movable elements for lubricating the segments of the joint. The lubricating oil can also be used to cool the engine and, in this case, the internal cavities communicate with each other by being connected by oil circulation channels. The oil is fed into an internal lubrication / cooling circuit of the engine by a pump, the internal cavities being used only to open and close valves of the internal circuit of the engine for cooling the engine in a closed circuit. It should be noted that the variation in volume of the internal cavities during a complete cycle of the machine is small, but probably sufficient for a closed circuit operation of the lubricant.

La demande de brevet WO 2004/070169 , déjà mentionnée, évoque la possibilité d'utiliser les cavités internes comme pompe, alors que les cavités externes servent comme moteur à combustion, ainsi que la possibilité d'utiliser les cavités externes comme pompe ou compresseur, alors que les cavités internes sont utilisées en tant que moteur. Aucun mode de réalisation concret n'est donné pour illustrer ces concepts.The patent application WO 2004/070169 already mentioned, refers to the possibility of using the internal cavities as a pump, while the external cavities serve as a combustion engine, as well as the possibility of using the external cavities as pump or compressor, while the internal cavities are used in as an engine. No concrete embodiment is given to illustrate these concepts.

On souhaite réaliser une machine rotative à losange déformable possédant une densité de puissance et/ou une densité de fonctions supérieure aux machines MRLD connues.It is desired to produce a deformable diamond rotary machine having a higher power density and / or functional density than known MRLD machines.

Résumé de l'inventionSummary of the invention

Des modes de réalisation de MRLD selon l'invention sont définis dans les revendications jointes.Embodiments of MRLD according to the invention are defined in the claims attached.

Description des figuresDescription of figures

  • les figures 1a à 1f illustrent l'évolution d'une cavité externe lors d'un cycle complet du losange ;the Figures 1a to 1f illustrate the evolution of an external cavity during a complete diamond cycle;
  • les figures 2a à 2d illustrent l'évolution de cavités externes et internes réalisées selon un premier mode de réalisation de MRLD, lors d'un cycle complet du losange;the Figures 2a to 2d illustrate the evolution of external and internal cavities made according to a first embodiment of MRLD, during a complete cycle of the diamond;
  • les figures 3a à 3d illustrent des cavités externes et internes selon un deuxième mode de réalisation;the Figures 3a to 3d illustrate external and internal cavities according to a second embodiment;
  • les figures 4a à 4d illustrent des cavités externes et internes selon un troisième mode de réalisation ;the Figures 4a to 4d illustrate external and internal cavities according to a third embodiment;
  • la figure 5 illustre une vue en perspective simplifiée de la machine ;the figure 5 illustrates a simplified perspective view of the machine;
  • la figure 6a illustre une vue en coupe transversale d'un ensemble stator et flasques latéraux de la machine ;the figure 6a illustrates a cross-sectional view of a stator assembly and lateral flanges of the machine;
  • les figures 6b et 6c illustrent des vues en coupe de la machine de l'invention, le losange étant représenté en deux positions angulaires différentes ;the Figures 6b and 6c illustrate sectional views of the machine of the invention, the diamond being represented in two different angular positions;
  • les figures 7a et 7b illustrent des vues en perspective simplifiées de la machine, le losange étant représenté en deux positions angulaires différentes ;the Figures 7a and 7b illustrate simplified perspective views of the machine, the diamond being shown in two different angular positions;
  • les figures 8a à 8c illustrent des vues en perspective simplifiées d'un losange déformable de l'invention ;the Figures 8a to 8c illustrate simplified perspective views of a deformable rhombus of the invention;
  • la figure 9 illustre une vue en coupe transversale de la machine de l'invention.the figure 9 illustrates a cross-sectional view of the machine of the invention.
Liste des repères :List of landmarks: 11 EnceintePregnant 22 Statorstator 33 RotorRotor 44 Losange déformableDeformable lozenge 55 Sommet du losangeDiamond Summit 66 PistonPiston 77 Articulation pivotante (pivot)Swivel joint (pivot) 88 Cavité externeExternal cavity 99 Face Extrados du pistonExtrados side of the piston 1010 Cavité interneInternal cavity 1111 Face Intrados du pistonOpposite side of the piston 1212 Flasque latéralLateral flange 1313 Flasque latéralLateral flange 1414 Cavité périphérique extradosExtrados peripheral cavity 1515 Cavité circulaire extradosExtrados circular cavity 1616 Arbre central ovaleOval central tree 1717 Cavité périphérique intradosPeripheral cavity 1818 Cavité circulaire intradosCavity circular intrados 1919 Cylindre de révolutionCylinder of revolution 5151 Orifice radial d'admission / refoulement de fluideRadial inlet / outlet fluid orifice 5252 Orifice axial d'admission / refoulement de fluideAxial inlet / outlet of fluid 5353 Lumières périphériquesPeripheral lights 5454 Canaux admission / refoulement dans les articulationsInlet / discharge channels in the joints 5555 Canaux d'admission/refoulement via les pistonsInlet / discharge channels via pistons 56, 56'56, 56 ' Canal axialAxial channel 5757 Arbre de rotation (central)Rotating shaft (central) 5858 Première extrémité de l'arbre de rotationFirst end of the rotation shaft 5959 Orifice sortie plan médianMidplane outlet port 6060 Deuxième extrémité de l'arbre de rotationSecond end of the rotation shaft Description de l'inventionDescription of the invention

L'invention concerne une machine rotative à losange déformable (MRLD) comportant un stator 2 ayant une forme générale tubulaire de section environ ovale, dont le profil est en accord avec les règles géométriques imposées par la déformation du losange au cours de sa rotation et dont la surface interne définit une enceinte 1 de réception d'un rotor 3 qui est un losange déformable 4.The invention relates to a rotary deformable diamond machine (MRLD) comprising a stator 2 having a generally tubular shape of approximately oval section, whose profile is in accordance with the geometric rules imposed by the deformation of the diamond during its rotation and of which the inner surface defines an enclosure 1 for receiving a rotor 3 which is a deformable rhombus 4.

Le losange déformable 4 est un ensemble de quatre pistons 6 reliés entre eux par des liaisons pivot, matérialisées par des articulations pivotantes 7, et qui forment une chaîne refermée sur elle-même. Le rotor 3 est généralement la partie tournante de la machine, mais on peut, dans une variante, entraîner l'enceinte 1 en rotation qui tourne alors par rapport au losange 4 fixe en rotation mais dont les côtés se déforment (on comprend par côté le segment qui relie, dans un plan perpendiculaire à l'axe de rotation de la machine, les axes de deux liaisons pivot adjacentes). Les projections des axes de liaisons pivots des pistons dans un plan perpendiculaire à l'axe de rotation de la machine représentent les sommets 5 du losange. Le segment qui relie deux sommets 5 opposés forme une diagonale du losange. On comprend, dans ce qui suit, par diagonale également une pièce ou liaison mécanique construite selon ce segment.The deformable rhombus 4 is a set of four pistons 6 interconnected by pivot links, materialized by pivoting joints 7, and which form a chain closed on itself. The rotor 3 is generally the rotating part of the machine, but it is possible, in a variant, to drive the chamber 1 in rotation which then rotates relative to the rhombus 4 fixed in rotation but whose sides are deformed (the side segment that connects, in a plane perpendicular to the axis of rotation of the machine, the axes of two adjacent pivot links). The projections of axes of pivot connections of the pistons in a plane perpendicular to the axis of rotation of the machine represent the vertices 5 of the diamond. The segment that connects two opposing vertices 5 forms a diagonal of the rhombus. It will be understood in the following, also diagonally a part or mechanical connection built according to this segment.

Un piston 6 est une pièce ayant une forme de portion de cylindre de directrice parallèle à l'axe de rotation de la machine. Les surfaces situées aux deux extrémités de cette pièce assurent chacune une partie d'une liaison pivot d'axe de rotation parallèle à l'axe de rotation de la machine. Le segment qui relie deux points médians des côtés opposés du losange, notamment de deux pistons opposés, forme une médiane du losange. On comprend, dans ce qui suit, par médiane également une pièce ou liaison mécanique construite selon ce segment.A piston 6 is a part having a shape of cylinder portion of director parallel to the axis of rotation of the machine. The surfaces located at the two ends of this piece each provide a part of a rotational axis pivot connection parallel to the axis of rotation of the machine. The segment that connects two midpoints of opposite sides of the rhombus, including two opposed pistons, forms a median of the rhombus. In the following, we also understand, by median, also a part or mechanical connection built according to this segment.

L'intersection des diagonales ou des médianes du losange définit le centre de la machine. Par arbre de rotation 57 (fig. 9) ou arbre central de la machine, on comprend une pièce ou un ensemble de pièces mécaniques permettant de récupérer le mouvement de rotation du rotor ou du stator via un système de transmission mécanique adapté.The intersection of the diagonals or medians of the diamond defines the center of the machine. By rotation shaft 57 ( Fig. 9 ) or central shaft of the machine, it comprises a part or a set of mechanical parts for recovering the rotational movement of the rotor or the stator via a suitable mechanical transmission system.

La machine comporte également deux flasques latéraux 12, 13 de fermeture (fig. 6a), disposés perpendiculairement à l'arbre de rotation de la machine et qui prennent appui contre les faces frontales avant et arrière du stator et du rotor.The machine also comprises two lateral flanges 12, 13 of closure ( Fig. 6a ), arranged perpendicularly to the rotation shaft of the machine and bearing against the front and rear faces of the stator and the rotor.

Dans ce qui suit, on comprend par l'extrados 9 du piston la surface externe du piston 6, située à l'extérieur du losange 4, et par l'intrados 11 du piston, la surface interne du piston 6, située à l'intérieur du losange 4.In what follows, the extrados 9 of the piston comprises the outer surface of the piston 6, located outside the rhombus 4, and the lower surface 11 of the piston, the inner surface of the piston 6, located at the inside the diamond 4.

Par volume de la machine, on comprend le cylindre de révolution fermé par les flasques latéraux et englobant le profil externe du stator de la machine selon une réalisation classique ou englobant la pièce la plus excentrée par rapport l'axe de rotation.By volume of the machine, it comprises the revolution cylinder closed by the side flanges and encompassing the outer profile of the stator of the machine according to a conventional embodiment or encompassing the most eccentric piece relative to the axis of rotation.

L'invention utilise la propriété de la machine rotative à losange déformable munie de moyens de l'invention afin de créer des cavités dont le volume varie lors de la déformation du losange, ces cavités externes et internes au rotor (ou au losange) pouvant être réalisées de différentes manières.The invention uses the property of the deformable diamond rotary machine provided with means of the invention to create cavities whose volume varies during the deformation of the rhombus, these external cavities and internal to the rotor (or rhombus) can be realized in different ways.

Dans un premier mode de réalisation qui est relatif aux cavités externes, représenté sur la figure 1 par un cycle complet du losange 4, une cavité externe 8 (on comprend externe au rotor 3) de travail est formée par une cavité périphérique extrados 14. Une telle cavité périphérique extrados 14 est formée par la face extrados 9 de l'un des pistons 6 du losange 4 contre la paroi intérieure du stator 2 et les flasques de fermeture 12,13 de part et d'autre de la machine. La figure 1 montre l'exemple de la cavité périphérique extrados 14 gauche. Dans la position initiale (figure 1a), la cavité périphérique extrados en la partie inférieure est initialement vide, ou à volume minimal. Les figures suivantes (1b à 1f) montrent l'évolution de cette cavité (représentée pointillée) quand le losange 4 tourne dans le sens indiqué sur la figure. La figure ne représente pas les dispositifs de remplissage. La figure 1b montre le début de l'admission. La figure 1c montre un état de la phase d'admission où la cavité augmente encore en volume. Sur la figure 1d, la cavité périphérique extrados 14 gauche a atteint son volume maximal ; de manière préférée, le losange 4 prend alors la forme d'un carré. Ensuite (figure 1e), le volume de la cavité décroît et le fluide est évacué. Les dispositifs de refoulement ne sont pas représentés sur cette figure. Sur la figure 1f, la cavité périphérique extrados 14 gauche atteint son volume minimal voire se vide complètement. C'est à la fois la fin du refoulement et le début de l'admission pour la cavité qui suit. Chaque cavité périphérique extrados 14 effectue un cycle par demi-tour. A titre d'exemple, la cylindrée d'une telle cavité représente environ 1/50ième du volume de la machine, soit une cylindrée de 4/50ième du volume de la machine par tour. Afin de pouvoir échanger un fluide avec un circuit extérieur à la machine, on peut accéder à ces cavités périphériques extrados 14 par des canaux pratiqués dans les pistons 6, ou dans les pivots 7 ou dans le stator 2 ou encore dans les flasques latéraux 12, 13 de fermeture, tel qu'il sera expliqué par la suite.In a first embodiment which relates to external cavities, shown in the figure 1 by a complete cycle of the rhombus 4, an external cavity 8 (it is understood external to the rotor 3) of work is formed by an extrados peripheral cavity 14. Such a cavity extrados peripheral 14 is formed by the extrados face 9 of one of the pistons 6 of the rhombus 4 against the inner wall of the stator 2 and the closing flanges 12,13 on either side of the machine. The figure 1 shows the example of the extrados peripheral cavity 14 left. In the initial position ( figure 1a ), the peripheral cavity extrados in the lower part is initially empty, or at minimum volume. The following figures (1b to 1f) show the evolution of this cavity (shown dashed) when the diamond 4 rotates in the direction indicated in the figure. The figure does not represent the filling devices. The figure 1b shows the beginning of the admission. The figure 1c shows a state of the admission phase where the cavity increases in volume. On the figure 1d , the left extrados peripheral cavity 14 has reached its maximum volume; preferably, the diamond 4 then takes the form of a square. Then ( figure 1e ), the volume of the cavity decreases and the fluid is evacuated. The delivery devices are not shown in this figure. On the figure 1f , the left extrados peripheral cavity 14 reaches its minimum volume or empties completely. It is at the same time the end of the repression and the beginning of the admission for the cavity which follows. Each extrados peripheral cavity 14 performs a cycle by half-turn. By way of example, the displacement of such a cavity represents approximately 1/50 th of the machine volume, ie a displacement of 4/50 th of the machine volume per revolution. In order to be able to exchange a fluid with a circuit external to the machine, these extrados peripheral cavities 14 can be accessed by channels made in the pistons 6, or in the pivots 7 or in the stator 2 or in the lateral flanges 12, 13 as will be explained later.

On peut ainsi réaliser un dispositif qui exploite une, deux, trois ou quatre cavités périphériques extrados 14 simultanément, l'écart de phase de deux cavités adjacentes étant de 90°. Ces cavités périphériques extrados 14 peuvent avoir la même fonction (pompe, compresseur, moteur etc.) ou non. A titre d'exemple, une cavité peut recevoir un gaz sous pression qui met le rotor en mouvement, alors que les autres travaillent comme compresseur ou comme pompe. Si plusieurs cavités travaillent comme pompe, elles peuvent travailler avec le même fluide ou avec un fluide différent. Cependant, les cavités périphériques extrados 14 utilisant la même paroi intérieure du stator, il y a un risque de contamination entre les différents fluides des cavités périphériques extrados 14, car il y aura toujours un film permanent qui se forme sur cette paroi intérieure. Il faut évaluer ce risque pour chaque cas ; il peut par exemple être acceptable de transporter deux liquides alimentaires (p.ex. eau et lait ou lait et pâte à base de lait) dans deux cavités périphériques extrados, mais il ne serait probablement pas acceptable de transporter un liquide alimentaire et un liquide non alimentaire dans deux cavités périphériques extrados 14, adjacentes ou non. Pour éviter tout risque de contamination croisée, il faut utiliser deux cavités totalement séparées. Cela sera expliqué ci-dessous.It is thus possible to produce a device that exploits one, two, three or four extrados peripheral cavities 14 simultaneously, the phase difference of two adjacent cavities being 90 °. These extrados peripheral cavities 14 may have the same function (pump, compressor, motor, etc.) or not. For example, a cavity can receive a pressurized gas that sets the rotor in motion, while the others work as a compressor or as a pump. If several cavities work as a pump, they can work with the same fluid or with a different fluid. However, the extrados peripheral cavities 14 using the same inner wall of the stator, there is a risk of contamination between the different fluids extrados peripheral cavities 14, because there will always be a permanent film that is formed on the inner wall. This risk must be assessed for each case; for example, it may be acceptable to carry two food liquids (eg water and milk or milk and milk-based dough) in two extrados peripheral cavities, but it would probably not be acceptable to carry a liquid food and a non-liquid. in two extrados peripheral cavities 14, adjacent or not. To avoid any risk of cross-contamination, use two completely separate cavities. This will be explained below.

Ainsi, à titre d'exemple, la machine illustrée à la figure 1 présente un nombre de cavités périphériques extrados gauche 14 de 2 ou 4 par tour, un nombre de cavités périphériques extrados droite 14 de 2 par tour, et une cavité centrale, ce qui fait un nombre total instantané de 5 cavités, pouvant remplir trois fonctions.For example, the machine illustrated in figure 1 has a number of extrados left peripheral cavities 14 of 2 or 4 per turn, a number of right extrados peripheral cavities 14 of 2 per turn, and a central cavity, which makes an instantaneous total number of cavities, which can fulfill three functions.

Dans un mode de réalisation illustré à la figure 2, une cavité externe est une cavité externe de jonction en étant définie par l'espace compris entre deux pistons 6 connexes du rotor 3 ou qui ont une liaison pivot (ou articulation pivotante) 7 en commun et la paroi intérieure du stator 2 (ou enceinte 1), quatre cavités étant ainsi définies dans l'espace compris entre le rotor 3 et le stator 2. Le stator 2 peut présenter une enceinte 1 de forme ovale ou circulaire. Dans le cas où l'enceinte est circulaire, elle présente un axe longitudinal qui est commun avec celui de rotation de la machine et la cavité définie avec les flasques latéraux de fermeture est une cavité circulaire extrados 15. Une telle cavité circulaire extrados 15 effectue un cycle par demi-tour de rotation du rotor, et les quatre cavités se succèdent sur un tour. A titre d'exemple, la cylindrée de la cavité circulaire extrados 15 peut représenter 1/100ième du volume de la machine, soit une cylindrée de 2/25ième du volume de la machine par tour si les cycles effectués à chaque demi-tour et les quatre cavités sont cumulés sur une même fonction. Le guidage de la déformation du rotor 3 est réalisé par un arbre central de section ovale 16. Le volume de cette cavité varie en fonction de la position du rotor 3, notamment, il croît d'une position où le volume est minimal (fig. 2a) à une position d'admission de fluide (fig. 2b), atteint son volume maximal en position de déformation maximum du losange 4 (fig. 2c), pour décroître encore et comprimer le fluide (fig. 2d) avant de l'éliminer complètement de la cavité circulaire extrados 15 (position du losange similaire à celle de la position 2a). Afin de pouvoir échanger un fluide avec un circuit extérieur à la machine, on peut accéder à ces cavités circulaires extrados 15 par des canaux pratiqués dans les pistons 6, ou dans les pivots 7 ou dans le stator 2 ou encore dans les flasques latéraux 12,13 de fermeture.In an embodiment illustrated in figure 2 , an external cavity is an external junction cavity defined by the space between two pistons 6 connected to the rotor 3 or which have a pivot connection (or pivot joint) 7 in common and the inner wall of the stator 2 (or enclosure 1), four cavities being thus defined in the space between the rotor 3 and the stator 2. The stator 2 may have an enclosure 1 of oval or circular shape. In the case where the enclosure is circular, it has a longitudinal axis which is common with that of rotation of the machine and the cavity defined with the lateral closure flanges is an extrados circular cavity 15. Such an extrados circular cavity 15 performs a cycle by half turn of rotation of the rotor, and the four cavities succeed one another. For example, the displacement of the extrados circular cavity 15 may represent 1/100 th of the volume of the machine, ie a displacement of 2/25 th of the machine volume per revolution if the cycles performed at each half-turn and the four cavities are accumulated on the same function. The guide of the deformation of the rotor 3 is formed by a central shaft of oval section 16. The volume of this cavity varies according to the position of the rotor 3, in particular, it grows from a position where the volume is minimal ( Fig. 2a ) at a fluid inlet position ( Fig. 2b ), reaches its maximum volume in maximum deformation position of the diamond 4 ( Fig. 2c ), to decrease further and compress the fluid ( Fig. 2d ) before completely removing it from the extrados circular cavity 15 (diamond position similar to that of position 2a). In order to be able to exchange a fluid with a circuit outside the machine, these circular cavities can be accessed extrados 15 by channels made in the pistons 6, or in the pivots 7 or in the stator 2 or in the lateral flanges 12, 13 closing.

Avantageusement, lorsque l'enceinte 1 est circulaire, cette variante de réalisation comporte une simplification constructive associée à une réduction significative du coût de fabrication, dans la mesure où le stator 2 et l'enceinte 1 peuvent être obtenus directement à partir un profilé standard de section circulaire, évitant les opérations d'usinage par enlèvement de matière.Advantageously, when the enclosure 1 is circular, this variant embodiment comprises a constructive simplification associated with a significant reduction in the manufacturing cost, insofar as the stator 2 and the enclosure 1 can be obtained directly from a standard profile of circular section, avoiding machining operations by removal of material.

Ainsi, à titre d'exemple, la machine illustrée aux figures 2 présente un nombre de cavités circulaires extrados 15 de 8 par tour, un nombre de cavités périphériques intrados 17 de 8 par tour, ce qui fait un nombre total instantané de 8 cavités, pouvant remplir quatre fonctions. Dans un second mode de réalisation relatif aux cavités internes, qui peut être combiné avec le premier mode, une cavité de travail est formée par une cavité interne au rotor 3. Cette cavité utilise un profil interne au losange 4, ce profil étant de type MRLD, c'est à dire un profil qui respecte les lois de déformation du losange, qui est, dans une première variante illustrée aux figures 3a à 3d, associé avec la surface intérieure appelée face intrados 11 des pistons 6. La figure 3a montre un exemple de quatre cavités périphériques intrados 17, dont deux à gauche et deux à droite, tel que vu par rapport à un axe vertical passant par le centre du rotor 3. On peut aussi utiliser, alternativement ou en même temps, la cavité périphérique intrados gauche ou celle de droite. Ainsi, on dispose, comme dans le cas des cavités périphériques extrados 14, de jusqu'à quatre cavités périphériques intrados 17 de travail en simultané, qui peuvent remplir différentes fonctions, mais qui partagent un élément commun, l'arbre central, susceptible de conduire à une contamination croisée. Le profil qui est à l'extérieur du losange offre une surface commune à toutes les cavités périphériques extrados. De la même manière, le profil qui est à l'intérieur du losange offre une surface commune à toutes les cavités périphériques intrados. Toutefois, l'étanchéité dynamique entre les flasques de la machine et les pistons peuvent permettre une contamination croisée. Comme indiqué ci-dessus, il y a peu de risque de contamination croisée entre les cavités périphériques extrados 14 et les cavités périphériques intrados 17, et si l'on veut utiliser deux fluides de travail incompatibles entre eux, on emploie le premier de ces fluides dans une cavité périphérique extrados 14, et le second dans une cavité périphérique intrados 17. Il est à noter sur les figures 3b à 3d que les cavités extrados 14 gauche et intrados 17 gauche sont en opposition de phase (le volume de l'une croît, alors que le volume de l'autre décroît avec la rotation du losange 4, et arrive à une valeur maximale alors que la valeur de l'autre est minimale) et il en est de même pour les cavités extrados 14 et intrados 17 de droite. La cylindrée d'une cavité périphérique intrados 17 est légèrement plus faible que celle de la cavité périphérique extrados 14, cette différence de cylindrée est essentiellement liée à l'épaisseur des pistons. Le rapport de la cylindrée des cavités intrados sur celle des cavités extrados est inférieur à 1. Afin de pouvoir échanger un fluide avec un circuit extérieur à la machine, on peut accéder à ces cavités périphériques intrados 17 par des canaux pratiqués dans les pistons 6, ou dans les pivots 7 ou dans le stator 2 ou encore dans les flasques latéraux 12,13 de fermeture.For example, the machine illustrated in figures 2 has a number of extrados circular cavities of 8 per turn, a number of intrados peripheral cavities 17 of 8 per turn, which makes an instantaneous total number of 8 cavities, which can fulfill four functions. In a second embodiment relating to the internal cavities, which can be combined with the first mode, a working cavity is formed by an internal cavity of the rotor 3. This cavity uses a profile internal to the diamond 4, this profile being of the MRLD type. , ie a profile which respects the laws of deformation of the diamond, which is, in a first variant illustrated with the Figures 3a to 3d associated with the inner surface called the intrados face 11 of the pistons 6. The figure 3a shows an example of four peripheral intrados cavities 17, two on the left and two on the right, as seen with respect to a vertical axis passing through the center of the rotor 3. It is also possible to use, alternatively or at the same time, the peripheral cavity left intrados or the right one. Thus, it is possible, as in the case of extrados peripheral cavities 14, up to four peripheral cavities intrados 17 simultaneous work, which can perform different functions, but which share a common element, the central shaft, likely to lead cross-contamination. The profile that is outside the diamond provides a surface common to all extrados peripheral cavities. In the same way, the profile which is inside the rhombus offers a surface common to all the intrados peripheral cavities. However, the dynamic seal between the flanges of the machine and the pistons may allow cross-contamination. As indicated above, there is little risk of cross-contamination between the extrados peripheral cavities 14 and the intrados peripheral cavities 17, and if it is desired to use two working fluids which are incompatible with each other, the first of these fluids is used. in an extrados peripheral cavity 14, and the second in a peripheral intrados cavity 17. It should be noted on the Figures 3b to 3d the extrados cavities 14 left and 17 left intrados are in phase opposition (the volume of one increases, while the volume of the other decreases with the rotation of the diamond 4, and reaches a maximum value while the value the other is minimal) and it is the same for the extrados cavities 14 and intrados 17 right. The cubic capacity of a peripheral intrados cavity 17 is slightly lower than that of the extrados peripheral cavity 14, this difference in displacement is essentially related to the thickness of the pistons. The ratio of the cubic capacity of the intrados cavities to that of the extrados cavities is less than 1. In order to be able to exchange a fluid with a circuit outside the machine, these peripheral intrados cavities 17 can be accessed by channels made in the pistons 6, or in the pivots 7 or in the stator 2 or in the lateral flanges 12, 13 of closure.

Dans un cas extrême, on dispose ainsi de huit cavités de travail différentes. A titre d'exemple, si le rotor est mu par un moteur externe, toutes les deux fois quatre cavités peuvent être utilisées comme compresseur ou comme pompe.In an extreme case, there are thus eight different working cavities. For example, if the rotor is driven by an external motor, every two times four cavities can be used as a compressor or as a pump.

Ainsi, à titre d'exemple, la machine illustrée aux figures 3 présente deux cavités périphériques extrados gauches 14, deux cavités périphériques extrados droites 14, deux cavités périphériques intrados gauches 17 et deux cavités périphériques intrados droites 17, ce qui fait un nombre total instantané de 8 cavités, pouvant remplir quatre fonctions.For example, the machine illustrated in figures 3 has two left extrados peripheral cavities 14, two straight extrados peripheral cavities 14, two left intrados peripheral cavities 17 and two right intrados peripheral cavities 17, which makes an instantaneous total number of 8 cavities, which can fulfill four functions.

Les figures 2a à 2d montrent par ailleurs des cavités périphériques intrados 17, gauche et droite, qui peuvent être combinées avec des cavités circulaires extrados 15, tel qu'il a été expliqué plus haut, afin d'obtenir jusqu'à huit cavités de travail différentes.The Figures 2a to 2d Furthermore, there are left and right intrados peripheral cavities 17, which can be combined with extrados circular cavities 15, as explained above, to obtain up to eight different working cavities.

Dans une deuxième variante de ce mode de réalisation illustrée aux figures 4a à 4d, les cavités internes sont des cavités circulaires intrados 18, une cavité étant formée par l'espace compris entre deux pistons 6 connexes (ou qui ont une liaison pivot 7 en commun), un cylindre de révolution 19 interne au losange 4, dont l'axe longitudinal est commun à l'arbre central de la machine. Une telle cavité circulaire intrados 18 effectue un cycle par demi-tour et les quatre cavités se succèdent sur un tour. A titre d'exemple, la cylindrée d'une telle cavité circulaire intrados 18 représente environ 1/100ième du volume de la machine, soit une cylindrée de 2/25ième du volume de la machine par tour si on cumule les quatre cavités et les deux cycles par tour. Il est à noter que la déformation du losange 4 est dans ce cas guidée par le profil interne de l'enceinte 1 du stator 2. Afin de pouvoir échanger un fluide avec un circuit extérieur à la machine, on peut accéder à ces cavités circulaires intrados 18 par des canaux pratiqués dans les pistons 6, ou dans les pivots 7 ou dans le stator 2 ou encore dans les flasques latéraux 12,13 de fermeture.In a second variant of this embodiment illustrated in Figures 4a to 4d , the internal cavities are intrados circular cavities 18, a cavity being formed by the space between two pistons 6 connected (or having a pivot connection 7 in common), a cylinder of revolution 19 internal to the diamond 4, the longitudinal axis is common to the central shaft of the machine. Such a circular cavity intrados 18 performs a cycle by half-turn and the four cavities succeed one another. By way of example, the displacement of such a circular intrados cavity 18 represents approximately 1/100 th of the volume of the machine, ie a displacement of 2/25 th of the volume of the machine per revolution if the four cavities are combined and both cycles per revolution. It should be noted that the deformation of the rhombus 4 is in this case guided by the internal profile of the chamber 1 of the stator 2. In order to be able to exchange a fluid with a circuit outside the machine, these circular cavities can be accessed. 18 by channels in the pistons 6, or in the pivots 7 or in the stator 2 or in the side flanges 12, 13 closing.

Ainsi, à titre d'exemple, la machine illustrée aux figures 4 présente deux cavités périphériques extrados gauches 14, deux cavités périphériques extrados droites 14, et quatre cavités circulaires intrados 18, ce qui fait un nombre total instantané de 8 cavités, pouvant remplir quatre fonctions.For example, the machine illustrated in figures 4 has two left extrados peripheral cavities 14, two extrados straight peripheral cavities 14, and four intrados circular cavities 18, which makes an instantaneous total number of 8 cavities, which can fulfill four functions.

La machine rotative à losange déformable de l'invention permet, de par sa construction avec au moins trois cavités à volume variable, d'assurer plusieurs fonctions choisies parmi celles de : moteur, pompe, compresseur ou turbine, ou une combinaison de celles-ci, un échange de fluide étant établi avec un ou plusieurs circuits externes à la machine, ainsi qu'entre les diverses cavités à volume variable de celle-ci. Les zones d'échange (ou moyens de transfert ou d'échange) de fluide au sein de la machine sont illustrées dans les figures 5 à 9. Ces zones d'échanges sont des orifices d'admission ou de refoulement communiquant, d'une part, avec des circuits de fluide externes à la machine et d'autre part, avec des canaux pratiqués au sein de ses éléments débouchant dans des cavités externes ou internes de la machine, tel qu'il sera expliqué par la suite.The rotary deformable diamond machine of the invention makes it possible, by virtue of its construction with at least three variable volume cavities, to perform several functions chosen from those of: motor, pump, compressor or turbine, or a combination thereof a fluid exchange being established with one or more external circuits to the machine, as well as between the various variable volume cavities thereof. The exchange zones (or means of transfer or exchange) of fluid within the machine are illustrated in the Figures 5 to 9 . These exchange zones are inlet or discharge ports communicating, on the one hand, with fluid circuits external to the machine and, on the other hand, with channels formed within its elements opening into external cavities. or internal of the machine, as will be explained later.

La figure 5 illustre quatre orifices radiaux 51 d'admission ou refoulement du fluide dans les cavités externes de la machine, ces orifices sont pratiqués sur la surface externe du stator 2 et traversent radialement son épaisseur pour déboucher dans les cavités externes 8 de la machine.The figure 5 illustrates four radial orifices 51 of admission or discharge of the fluid in the external cavities of the machine, these orifices are formed on the outer surface of the stator 2 and radially cross its thickness to open into the outer cavities 8 of the machine.

Les figures 6a à 6c illustrent des orifices pratiqués dans les flasques latéraux 12,13 de fermeture de la machine, réalisés notamment sous forme d'orifices axiaux et de lumières périphériques. Tel que visible à la figure 6a, deux orifices axiaux 52 permettent une admission du fluide axialement (dans le sens de l'axe longitudinal de la machine) à l'intérieur du rotor, ces orifices pouvant avantageusement être munis de clapets assurant leur fermeture et respectivement leur ouverture. Les deux flasques latéraux 12,13 sont également munis chacun de quatre lumières périphériques 53 qui sont des fentes ayant une forme générale de demi-lune leurs dimensions et leur agencement étant réalisés de manière à ce que, au moins dans l'une des positions du rotor 3, ces lumières périphériques 53 soient complètement obstruées par les articulations pivotantes 7 du rotor 3. La figure 6b illustre une telle position où les quatre lumières périphériques 53 sont recouvertes par les quatre articulations pivotantes 7 du rotor 3. Lors de la rotation du rotor 3 dans le sens indiqué par la flèche dans les figures 6b et 6c, les lumières périphériques 53 sont découvertes progressivement et la surface de la zone d'échange augmente avec l'angle de rotation jusqu'à une position où elles sont complètement ouvertes (fig. 6c), puis la section de la zone d'échange de fluide diminue ensuite jusqu'à la position illustrée dans la figure 6b. Cette solution assure une ouverture et une fermeture progressives et automatiques de la zone d'échange entre un circuit de fluide en amont ou en aval de la machine et les cavités externes 8 de la machine, toutes les fermetures et ouvertures d'orifices étant en phase entre elles.The Figures 6a to 6c illustrate orifices made in the lateral flanges 12, 13 of closure of the machine, in particular in the form of axial orifices and peripheral lights. As visible at figure 6a , two axial orifices 52 allow admission of the fluid axially (in the direction of the longitudinal axis of the machine) inside the rotor, these orifices may advantageously be provided with valves ensuring their closure and respectively their opening. The two lateral flanges 12, 13 are also each provided with four peripheral lights 53 which are slots having a generally half-moon shape, their dimensions and their arrangement being made so that, at least in one of the positions of the rotor 3, these peripheral lights 53 are completely obstructed by the pivoting joints 7 of the rotor 3. The figure 6b illustrates such a position where the four peripheral lights 53 are covered by the four pivoting joints 7 of the rotor 3. When rotating the rotor 3 in the direction indicated by the arrow in the Figures 6b and 6c , the peripheral lights 53 are gradually exposed and the surface of the exchange zone increases with the angle of rotation to a position where they are completely open ( Fig. 6c ), then the section of the fluid exchange zone then decreases to the position illustrated in FIG. figure 6b . This solution provides progressive and automatic opening and closing of the exchange zone between a fluid circuit upstream or downstream of the machine and the external cavities 8 of the machine, all the closures and orifice openings being in phase. between them.

Les figures 7a et 7b illustrent une autre variante de réalisation des zones d'échange de fluide à l'intérieur de la machine, notamment via des canaux 54 d'admission ou refoulement pratiqués au niveau des articulations pivotantes 7 du rotor 3. La rotation qui a lieu entre les pistons 6 et leur pivots 7 permet une ouverture et une fermeture automatique de ces canaux 54 s'étendant radialement et sur une certaine profondeur le long de l'articulation pivotante 7. On note que l'ouverture et la fermeture des canaux appartenant à deux articulations pivotantes opposées (se faisant face) sont en phase.The Figures 7a and 7b illustrate another alternative embodiment of the fluid exchange zones inside the machine, in particular via inlet or discharge channels 54 made at the pivoting joints 7 of the rotor 3. The rotation which takes place between the pistons 6 and their pivots 7 allows an opening and an automatic closing of these channels 54 extending radially and to a certain depth along the pivoting joint 7. It is noted that the opening and closing of the channels belonging to two pivoting joints opposing (facing each other) are in phase.

Les figures 8a à 8c illustrent une autre variante de réalisation des zones d'échange de fluide, cet échange se faisant par des canaux 55 pratiqués dans une direction radiale dans les pistons 6. La figure 8a illustre le rotor 3 de la machine où chaque piston 6 comprend deux orifices traversants, le passage de fluide pouvant être réalisé dans les deux sens (intérieur vers l'extérieur et vice-versa). La figure 8b illustre un exemple de rotor où chaque piston comprend un orifice traversant réalisé de manière à pouvoir recevoir un clapet de fermeture assurant le passage du fluide de l'intérieur vers l'extérieur du rotor (dans le sens des flèches de la fig.8b). La figure 8c illustre un exemple similaire au précédent, mais où le passage du fluide est permis depuis l'extérieur vers l'intérieur du rotor (dans le sens des flèches de la fig.8c).The Figures 8a to 8c illustrate another alternative embodiment of the fluid exchange zones, this exchange being done by channels 55 made in a radial direction in the pistons 6. The figure 8a illustrates the rotor 3 of the machine where each piston 6 comprises two through holes, the fluid passage can be made in both directions (inside out and vice versa). The figure 8b illustrates an example of a rotor in which each piston comprises a through orifice made so as to be able to receive a closing valve ensuring the passage of the fluid from the inside to the outside of the rotor (in the direction of the arrows of the 8B ). The figure 8c illustrates an example similar to the previous one, but where the passage of the fluid is allowed from the outside towards the inside of the rotor (in the direction of the arrows of the fig.8c ).

La figure 9 illustre une autre variante de réalisation de canal axial 56 d'admission ou de refoulement de fluide, celui-ci étant réalisé dans l'arbre central ou de rotation 57 de la machine. La cavité interne de l'arbre de rotation 57 comprend un premier canal axial 56 dont l'orifice d'entrée se trouve à une première extrémité 58 de l'arbre et l'orifice de sortie 59 au niveau du plan médian de la machine, ainsi qu'un deuxième canal axial 56' qui part de ce plan milieu et va jusqu'à la deuxième extrémité 60 de l'arbre de rotation 57. Des orifices, munis de préférence de clapets, permettent l'admission du fluide véhiculé par l'arbre central dans les cavités qu'il traverse, voire le refoulement du fluide des cavités via le canal axial de l'arbre vers un circuit externe de la machine.The figure 9 illustrates another embodiment of axial channel 56 for admission or discharge of fluid, the latter being formed in the central shaft or rotation 57 of the machine. The internal cavity of the rotation shaft 57 comprises a first axial channel 56 whose inlet orifice is at a first end 58 of the shaft and the outlet orifice 59 at the center plane of the machine, and a second axial channel 56 'which starts from this middle plane and goes to the second end 60 of the rotation shaft 57. Orifices, preferably provided with valves, allow the admission of the fluid conveyed by the central shaft in the cavities it passes through, or the discharge of the cavity fluid via the axial channel of the shaft to an external circuit of the machine.

Les canaux d'admission et de refoulement de fluide dans diverses cavités de la machine peuvent présenter des sections dites libres (par exemple des orifices, des lumières ou fentes) qui sont successivement obstruées, puis ouvertes lors de la rotation du rotor, ou ils peuvent être munis de clapets ou soupapes (éventuellement à ressort de rappel) actionnés en ouverture/fermeture par une différence de pression de fluide, ou, dans une autre variante de réalisation, ils peuvent être munis de dispositifs de fermeture/ouverture commandés par des actionneurs électriques ou électromécaniques (par exemple électrovannes, soupapes commandées, etc ...). Une combinaison des moyens de fermeture/ouverture des canaux peut être également envisagée, par exemple lesdites sections libres peuvent comporter, de plus, un dispositif piloté (tel un obturateur rotatif à rotation contrôlée) pouvant par exemple effectuer une variation de la surface de la section de la zone d'échange.The fluid inlet and outlet channels in various cavities of the machine may have so-called free sections (eg orifices, slots or slots) which are successively obstructed, then open when the rotor is rotated, or they may be provided with valves or valves (possibly spring return) actuated opening / closing by a fluid pressure difference, or, in another embodiment, they can be provided with closing / opening devices controlled by electric actuators or electromechanical (eg solenoid valves, controlled valves, etc ...). A combination of the means for closing / opening the channels can also be envisaged, for example said free sections may furthermore comprise a controlled device (such as a rotational shutter with controlled rotation) that can, for example, make a variation of the surface of the section. of the exchange zone.

Les caractéristiques techniques de la machine sont données ci-dessous à titre d'exemple. La machine a une taille très compacte. En effet, la longueur (selon le grand axe de la section transversale du stator) est d'environ 70 mm, la largeur (selon le petit axe de la section transversale du stator) est d'environ 60 mm et la profondeur (selon l'axe longitudinal) est d'environ 40 mm.The technical characteristics of the machine are given below as an example. The machine has a very compact size. Indeed, the length (along the long axis of the stator cross section) is about 70 mm, the width (along the minor axis of the stator cross section) is about 60 mm and the depth (according to the longitudinal axis) is about 40 mm.

Une machine améliorée, plus compacte et plus légère peut être conçue pour des vitesses de rotation plus élevées, tout en la munissant de systèmes d'étanchéité au niveau de ses zones d'échange de fluide. À l'inverse, il est aussi possible d'envisager un dimensionnement plus important de la machine, lorsque l'on alourdit les pistons afin d'augmenter le moment d'inertie du losange autour de l'axe de rotation.An improved, more compact and lighter machine can be designed for higher rotational speeds, while providing it with sealing systems at its fluid exchange zones. Conversely, it is also possible to consider a larger dimensioning of the machine, when it increases the pistons to increase the moment of inertia of the diamond around the axis of rotation.

A titre indicatif, les tolérances dimensionnelles et géométriques sont de l'ordre du centième de mm afin de limiter les fuites. Le volume maximal d'une cavité périphérique extrados 14 est d'environ 5 cm3. Le volume mort d'une cavité périphérique extrados 14 est négligeable et dépend essentiellement des conduites d'admission et de refoulement, soit d'environ 0,1 cm3 pour une conduite de la pompe à air et 1 cm3 pour une conduite de la turbine à eau. La machine est étanche vis-à-vis de l'extérieur car elle se satisfait d'étanchéités statiques (sans mouvement relatifs de pièces). Les étanchéités internes de la machine se font essentiellement par des jeux réduits, de grandes zones de laminage de fuites et l'utilisation des déformations des pièces sous pression pour diminuer les jeux et améliorer l'étanchéité.As an indication, the dimensional and geometric tolerances are of the order of a hundredth of a millimeter in order to limit leaks. The maximum volume of an extrados peripheral cavity 14 is about 5 cm 3 . The dead volume of an extrados peripheral cavity 14 is negligible and depends essentially on the inlet and outlet pipes, ie about 0.1 cm 3 for a pipe of the air pump and 1 cm 3 for a pipe of the water turbine. The machine is waterproof vis-à-vis the outside because it is satisfied with static seals (no relative movement of parts). The internal sealing of the machine is essentially by reduced clearance, large areas of lamination of leaks and the use of deformations of pressurized parts to reduce play and improve sealing.

La machine peut être réalisée à l'aide de matériaux plastiques à bas coefficient de frottement pour assurer la légèreté de l'ensemble, car la pression est faible est les pièces on une conception très robuste.The machine can be made with plastic materials with a low coefficient of friction to ensure the lightness of the assembly, because the pressure is low and the parts have a very robust design.

La machine peut encaisser les problèmes de présence d'eau dans les pompes à air, grâce notamment aux volumes morts, ceux-ci servant d'amortisseurs pneumatiques pour éviter le choc hydraulique lors de la diminution du volume. De plus, en cas de fort excès de liquide dans les zones pneumatiques, la pression augmentant fortement, les pistons et les flasques se déforment pour libérer un passage au fluide.The machine can cope with water problems in air pumps, thanks in particular to dead volumes, which serve as pneumatic dampers to prevent hydraulic shock when the volume decreases. In addition, in case of a large excess of liquid in the pneumatic zones, the pressure increasing strongly, the pistons and the flanges deform to release a fluid passage.

Claims (6)

  1. Rotary machine with a deformable lozenge comprising:
    • a stator (2) defining an oval-section enclosure (1);
    • four pistons of similar shape (6) connected to each other by pivoting connectors (7) with parallel axes to form a rotor (3) with a deformable lozenge (4), each piston having a surface (9) external to the lozenge cooperating with the wall of the enclosure to define an external cavity (14, 15) with a variable volume; and
    characterized in that it comprises a central shaft (16, 19) of oval section centered in the enclosure, and in that each piston has a surface (11) internal to the lozenge cooperating with the central shaft to define an internal cavity (17, 18) of variable volume, the internal surface of each piston comprising a part configured to completely marry up with the central shaft at each half-turn of the rotor rotation.
  2. Machine according to claim 1, wherein said part of the internal surface of the pistons is configured to marry up with the smallest radius parts of the central shaft (16).
  3. Machine according to claim 2, wherein:
    • the enclosure (1) is of circular section,
    • the central shaft (16) is of non-circular section, and
    • the pistons (6) are configured so that the pivoting connectors (7) are continuously in contact with the central shaft during one turn of the rotor (3) rotation.
  4. Machine according to claim 3, wherein the external surface (9) of each piston is configured so that its central zone is continuously in contact with the wall of the enclosure during one turn of the rotor (3) rotation.
  5. Machine according to claim 2, wherein:
    • the enclosure (1) and the central shaft (16) have parallel non-circular sections, and
    • the pistons (6) are configured so that the pivoting connectors (7) are continuously in contact with the walls of the enclosure (1) and the central shaft during one turn of the rotor rotation.
  6. Machine according to claim 1, wherein:
    • the central shaft (19) is of circular section,
    • the enclosure (1) is of non-circular section,
    • the pistons (6) are configured so that the pivoting connectors (7) are continuously in contact with the wall of the enclosure (1) during one turn of the rotor rotation, and
    • the internal surface of each piston is configured in two symmetrical concave cylindrical sectors, of the same radius as the central shaft, and arranged so that their connecting zone is continuously in contact with the central shaft.
EP16151876.6A 2008-09-22 2009-09-22 Multifunction rotary machine with deformable rhomb Not-in-force EP3045656B1 (en)

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FR0805177A FR2936272B1 (en) 2008-09-22 2008-09-22 ROTATING MACHINE WITH DEFORMABLE MULTIFUNCTION
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FR3005106B1 (en) 2013-04-25 2017-11-24 Jean Pierre Ambert ROTARY VOLUMIC MACHINE WITH THREE PISTONS
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US9523276B2 (en) 2016-12-20
FR2936272A1 (en) 2010-03-26
US20110236240A1 (en) 2011-09-29
EP3045656A1 (en) 2016-07-20
FR2936272B1 (en) 2012-07-13
EP2334906B1 (en) 2016-01-27
WO2010031927A1 (en) 2010-03-25
EP2334906A1 (en) 2011-06-22
DK2334906T3 (en) 2016-05-02

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