EP2873803A1 - Spiro-orbital expansion member - Google Patents

Spiro-orbital expansion member Download PDF

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Publication number
EP2873803A1
EP2873803A1 EP20140190464 EP14190464A EP2873803A1 EP 2873803 A1 EP2873803 A1 EP 2873803A1 EP 20140190464 EP20140190464 EP 20140190464 EP 14190464 A EP14190464 A EP 14190464A EP 2873803 A1 EP2873803 A1 EP 2873803A1
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EP
European Patent Office
Prior art keywords
spiro
orbital
expansion
detent
spiral
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140190464
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German (de)
French (fr)
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EP2873803B1 (en
Inventor
Arnaud Legros
Mouad Diny
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PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Priority to FR1361280A priority Critical patent/FR3013382B1/en
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2873803A1 publication Critical patent/EP2873803A1/en
Application granted granted Critical
Publication of EP2873803B1 publication Critical patent/EP2873803B1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00Rotary-piston machines or engines
    • F01C1/02Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F01C1/0207Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F01C1/0215Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00Sealing arrangements in rotary-piston machines or engines
    • F01C19/12Sealing arrangements in rotary-piston machines or engines for other than working fluid
    • F01C19/125Shaft sealings specially adapted for rotary or oscillating-piston machines or engines

Abstract

Organe de détente spiro-orbital (8) logeant un élément de spirale fixe (13) et un élément de spirale mobile (14) et comprenant un arbre excentrique (10) pourvu d'un plateau (23) porteur de l'élément de spirale mobile (14). L'organe de détente spiro-orbital (8) est pourvu d'un orifice d'admission (19) d'un premier fluide et comprend au moins un canal de dérivation (24) qui est ménagé entre l'orifice d'admission (19) et un point d'arrivée (25) ménagé en vis-à-vis du plateau (23), le point d'arrivée (25) étant équipé d'un joint d'étanchéité (28).A spiro-orbital detent member (8) housing a fixed scroll member (13) and a movable scroll member (14) and comprising an eccentric shaft (10) provided with a spiral element carrier plate (23) mobile (14). The spiro-orbital detent (8) is provided with an inlet (19) for a first fluid and comprises at least one bypass channel (24) which is provided between the inlet orifice ( 19) and an end point (25) formed opposite the plate (23), the end point (25) being equipped with a seal (28).

Description

  • L'invention porte sur un organe de détente du type organe spiro-orbital logeant un élément de spirale fixe et un élément de spirale mobile, l'organe de détente spiro-orbital comprenant un arbre excentrique pourvu d'un plateau porteur de l'élément de spirale mobile, l'organe de détente spiro-orbital étant pourvu d'un orifice d'admission d'un premier fluide.The invention relates to an expansion element of the spiro-orbital body type housing a fixed spiral element and a movable spiral element, the spiro-orbital expansion element comprising an eccentric shaft provided with a carrier plate of the element mobile spiral, the spiro-orbital detent member being provided with an inlet for a first fluid.
  • Le document FR2988127 décrit un organe de détente spiro-orbital qui est prévu pour être installé sur une boucle d'échange thermique à l'intérieur de laquelle circule un fluide diphasique ou sous forme vapeur, tel que de l'eau, du dioxyde de carbone ou analogue. L'organe de détente spiro-orbital comprend un élément de spirale fixe, un élément de spirale mobile et un arbre excentrique qui est associé à un vilebrequin. L'élément de spirale fixe comporte une spire fixe qui comprend un enroulement de type développante de cercle ou de type spirale d'Archimède. L'élément de spirale mobile comporte une spire mobile qui est de même type que celle de la spire fixe. La spire mobile est intercalée entre l'enroulement de la spire fixe. Autrement dit, la spire fixe et la spire mobile sont emboîtées l'une dans l'autre, la spire mobile étant mobile par rapport à la spire fixe.The document FR2988127 discloses a spiro-orbital expansion member which is intended to be installed on a heat exchange loop within which a two-phase fluid or in vapor form circulates, such as water, carbon dioxide or the like. The spiro-orbital detent comprises a fixed scroll member, a movable scroll member and an eccentric shaft which is associated with a crankshaft. The fixed spiral member has a fixed turn which comprises an involute type winding or an Archimedean spiral type winding. The mobile spiral element comprises a mobile coil which is of the same type as that of the fixed coil. The mobile coil is interposed between the winding of the fixed coil. In other words, the fixed coil and the mobile coil are nested one inside the other, the mobile coil being movable relative to the fixed coil.
  • La spire mobile subit un mouvement circo-orbital qui fait varier un volume interne compris entre deux faces en vis-à-vis de la spire fixe et la spire mobile. La spire mobile est positionnée de manière à ce que le volume interne comprennent une pluralité de chambres d'expansion qui sont diamétralement opposées les unes aux autres. La spire mobile subit un mouvement orbital qui entraîne une augmentation successive d'un volume de chacune des chambres d'expansion. Une telle augmentation de volume des chambres d'expansion permet une détente du fluide diphasique ou sous forme vapeur qui circule depuis un orifice d'admission, ménagé sensiblement au centre radial des spires vers un orifice d'évacuation, ménagé à la périphérie radiale des spires. Ces dispositions sont telles que le fluide diphasique ou sous forme vapeur atteint une pression de décharge à l'orifice d'évacuation qui est inférieure à une pression de charge à l'orifice d'admission.The mobile coil undergoes a circo-orbital movement that varies an internal volume between two faces vis-à-vis the fixed coil and the mobile coil. The moving coil is positioned so that the internal volume comprises a plurality of expansion chambers which are diametrically opposed to each other. The movable turn is orbited by an increase in volume of each of the expansion chambers. Such an increase in volume of the expansion chambers allows an expansion of the two-phase fluid or in vapor form which circulates from an intake orifice formed substantially at the radial center of the turns to an outlet orifice formed at the radial periphery of the turns. . These arrangements are such that the two-phase fluid or vapor form reaches a discharge pressure at the discharge port that is less than a charge pressure at the inlet port.
  • Un problème général posé pour un tel organe de détente spiro-orbital réside dans le fait que le fluide diphasique ou sous forme vapeur qui parcourt l'organe de détente spiro-orbital est couramment un fluide conducteur électrique de telle sorte qu'une génératrice électrique liée à un étage de détente que comprend l'organe de détente spiro-orbital est susceptible d'être en liaison avec l'arbre excentrique ce qui peut engendrer une détérioration, voire une cassure de l'arbre excentrique. De plus, dans le cas fréquent où le fluide diphasique ou sous forme vapeur est un fluide bon conducteur thermique, tel que l'eau, l'arbre excentrique tend à s'échauffer rapidement ce qui est préjudiciable.A general problem posed for such a spiro-orbital detent device lies in the fact that the two-phase or vapor-form fluid which flows through the spiro-orbital expansion element is currently an electrically conductive fluid such that an electrical generator connected on a relaxation stage that includes the spiro-orbital detent is likely to be in connection with the eccentric shaft which can cause a deterioration, or even a breakage of the eccentric shaft. In addition, in the frequent case where the two-phase fluid or vapor form is a good thermal conductive fluid, such as water, the eccentric shaft tends to heat up quickly which is detrimental.
  • Un but de la présente invention est de proposer un organe de détente spiro-orbital qui est robuste, peu encombrant, léger, dont des performances de détente d'un premier fluide sont optimisées, l'organe de détente spiro-orbital étant apte à fonctionner avec un premier fluide qui est diphasique ou sous forme vapeur, tel que de l'eau, un tel fluide étant notamment un bon conducteur électrique, sans que cette caractéristique ne oporte préjudice à une pérennité de l'organe spiro-orbital.An object of the present invention is to provide a spiro-orbital expansion element which is robust, compact, lightweight, whose expansion performance of a first fluid is optimized, the spiro-orbital expansion element being able to operate with a first fluid which is diphasic or in vapor form, such as water, such a fluid being in particular a good electrical conductor, without this characteristic does not affect the durability of the spiro-orbital organ.
  • Un organe de détente de la présente invention est un organe de détente spiro-orbital logeant un élément de spirale fixe et un élément de spirale mobile. L'organe de détente spiro-orbital comprend un arbre excentrique pourvu d'un plateau porteur de l'élément de spiral mobile. L'organe de détente spiro-orbital est pourvu d'un orifice d'admission d'un premier fluide.An expansion member of the present invention is a spiro-orbital detent member housing a fixed scroll member and a movable scroll member. The spiro-orbital detent comprises an eccentric shaft provided with a carrier plate of the movable spiral element. The spiro-orbital detent is provided with an inlet for a first fluid.
  • Selon la présente invention, l'organe de détente spiro-orbital comprend au moins un canal de dérivation qui est ménagé entre l'orifice d'admission et un point d'arrivée ménagé en vis-à-vis du plateau, et le point d'arrivée est équipé d'un joint d'étanchéité.According to the present invention, the spiro-orbital detent device comprises at least one bypass channel which is formed between the intake orifice and a point of arrival arranged opposite the plate, and the point d arrival is equipped with a gasket.
  • Le joint d'étanchéité obstrue avantageusement le canal de dérivation.The seal advantageously obstructs the bypass channel.
  • Le joint d'étanchéité est avantageusement en contact avec le plateau.The seal is advantageously in contact with the plate.
  • Le point d'arrivée est avantageusement ménagé en vis-à-vis d'une première face du plateau qui est pourvue de l'arbre excentrique.The point of arrival is advantageously arranged vis-à-vis a first face of the plate which is provided with the eccentric shaft.
  • Le joint d'étanchéité est avantageusement en contact avec la première face du plateau.The seal is advantageously in contact with the first face of the plate.
  • Le canal de dérivation est préférentiellement ménagé à l'intérieur d'un carter de l'organe de détente spiro-orbital qui loge l'élément de spirale fixe et l'élément de spirale mobile.The bypass channel is preferably formed inside a housing of the spiro-orbital expansion member which houses the fixed spiral element and the movable spiral element.
  • Le canal de dérivation est notamment agencé en une enveloppe d'un volume d'enceinte qui loge l'élément de spirale fixe et l'élément de spirale mobile.The bypass channel is in particular arranged in an envelope of a speaker volume which houses the fixed spiral element and the mobile spiral element.
  • Une boucle d'échange thermique de la présente invention est principalement reconnaissable en ce que la boucle d'échange thermique est équipée d'un tel organe de détente spiro-orbital.A heat exchange loop of the present invention is mainly recognizable in that the heat exchange loop is equipped with such a spiro-orbital expansion member.
  • Une ligne d'échappement de la présente invention est principalement reconnaissable en ce que la ligne d'échappement est équipée d'une telle boucle d'échange thermique.An exhaust line of the present invention is mainly recognizable in that the exhaust line is equipped with such a heat exchange loop.
  • Un véhicule automobile de la présente invention est principalement reconnaissable en ce que le véhicule automobile est équipé d'une telle ligne d'échappement.A motor vehicle of the present invention is mainly recognizable in that the motor vehicle is equipped with such an exhaust line.
  • D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui va en être faite d'exemples de réalisation, en relation avec les figures des planches annexées, dans lesquelles :Other characteristics and advantages of the present invention will become apparent on reading the description which will be given of exemplary embodiments, in relation to the figures of the attached plates, in which:
  • La figure 1 est une vue schématique d'une boucle d'échange thermique de la présente invention.The figure 1 is a schematic view of a heat exchange loop of the present invention.
  • La figure 2 est une vue schématique partielle en éclatée d'un organe de détente spiro-orbital de la présente invention qui équipe la boucle d'échange thermique illustrée sur la figure 1.The figure 2 is a partial schematic exploded view of a spiro-orbital expansion member of the present invention which equips the heat exchange loop illustrated on FIG. figure 1 .
  • La figure 3 est une vue schématique d'étapes successives de fonctionnement de l'organe de détente spiro-orbital illustré sur la figure 2.The figure 3 is a schematic view of successive steps of operation of the spiro-orbital detent member illustrated in FIG. figure 2 .
  • La figure 4 est une vue en coupe transversale partielle de l'organe de détente illustrée sur les figures 2 et 3.The figure 4 is a partial cross-sectional view of the expansion member illustrated in FIGS. figures 2 and 3 .
  • La figure 5 est une vue schématique en coupe longitudinale de l'organe de détente illustrée sur les figures 2 à 4.The figure 5 is a schematic view in longitudinal section of the detent member illustrated in FIGS. Figures 2 to 4 .
  • Sur la figure 1, un véhicule automobile est équipé d'un moteur à combustion interne 1 pour sa mise en mouvement. Le moteur à combustion interne 1 produit des gaz d'échappement 2 qui sont évacués vers un environnement extérieur 3 par l'intermédiaire d'une ligne d'échappement 4. Cette dernière est équipée d'un échangeur thermique 5 constitutif d'une première boucle d'échange thermique 6 à l'intérieur de laquelle circule un premier fluide 7. L'échangeur thermique 5 est destiné à capter des calories véhiculées par les gaz d'échappement 2 pour les transférer au premier fluide 7. L'échangeur thermique 5 constitue préférentiellement un évaporateur pour le premier fluide 7, de telle sorte que ce dernier passe d'un état liquide à un état vapeur à l'intérieur de l'échangeur thermique 5. Selon un sens d'écoulement S du premier fluide 7 à l'intérieur de la boucle d'échange thermique 6, cette dernière comprend l'échangeur thermique 5, un organe de détente spiro-orbital 8, un condenseur 11 à l'intérieur duquel le premier fluide 7 se condense et une pompe 12 pour mettre en circulation le premier fluide 7 à l'intérieur de la boucle d'échange thermique 6. A l'intérieur de l'organe de détente spiro-orbital 8, le premier fluide 7 subit une détente pour transmettre une puissance mécanique 9 à un arbre excentrique 10 que comporte l'organe de détente spiro-orbital 8. L'arbre excentrique 10 est mobile en rotation. L'arbre excentrique 10 est relié à une génératrice non représentée sur la figure.On the figure 1 , a motor vehicle is equipped with an internal combustion engine 1 for its setting in motion. The internal combustion engine 1 produces exhaust gases 2 which are discharged to an external environment 3 via an exhaust line 4. The latter is equipped with a heat exchanger 5 constituting a first loop heat exchange 6 inside which circulates a first fluid 7. The heat exchanger 5 is intended to capture calories carried by the exhaust gas 2 to transfer them to the first fluid 7. The heat exchanger 5 is preferably an evaporator for the first fluid 7, so that the latter moves from a liquid state to a vapor state inside the heat exchanger 5. According to a flow direction S of the first fluid 7 to the inside the heat exchange loop 6, the latter comprises the heat exchanger 5, a spiro-orbital expansion element 8, a condenser 11 inside which the first fluid 7 condenses and a pump 12 to circulating the first fluid 7 inside the heat exchange loop 6. Inside the spiro-orbital detent 8, the first fluid 7 undergoes expansion to transmit a mechanical power 9 to an eccentric shaft 10 comprises the spiro-orbital detent member 8. The eccentric shaft 10 is movable in rotation. The eccentric shaft 10 is connected to a generator not shown in the figure.
  • Il en résulte que le premier fluide 7 est à l'état de vapeur haute-pression entre l'échangeur thermique 5 et l'organe de détente spiro-orbital 8, que le premier fluide 7 est à l'état de vapeur basse-pression entre l'organe de détente spiro-orbital 8 et le condenseur 11, que le premier fluide 7 est à l'état de liquide basse pression entre le condenseur 11 et la pompe 12, et que le premier fluide 7 est à l'état de liquide haute-pression entre la pompe 12 et l'échangeur thermique 5. Le premier fluide 7 est un fluide diphasique, tel que de l'eau, du dioxyde de carbone ou analogue.As a result, the first fluid 7 is in the high-pressure vapor state between the heat exchanger 5 and the spiro-orbital detent 8, the first fluid 7 is in the low-pressure vapor state. between the spiro-orbital detent 8 and the condenser 11, that the first fluid 7 is in the low-pressure liquid state between the condenser 11 and the pump 12, and that the first fluid 7 is in the state of high-pressure liquid between the pump 12 and the heat exchanger 5. The first fluid 7 is a two-phase fluid, such as water, carbon dioxide or the like.
  • Sur la figure 2, l'organe de détente spiro-orbital 8 comprend un élément de spirale fixe 13, un élément de spirale mobile 14, un organe de couple anti-rotation 15 et l'arbre excentrique 10 qui est associé à une première face 26 de l'organe de détente spiro-orbital 8 contre laquelle s'appuie l'élément de spirale mobile 14. L'élément de spirale fixe 13 comporte une spire fixe 13', du type spire d'Archimède ou déroulante de cercle, qui comprend des circonvolutions 13" d'enroulement de la spire fixe 13' sur elle-même. L'élément de spirale mobile 14 comporte une spire mobile 14', qui est de même type que celle de la spire fixe 13', voire qui est homothétique à cette dernière. La spire mobile 14' est intercalée entre les circonvolutions 13" de la spire fixe 13'. Autrement dit, la spire fixe 13' et la spire mobile 14' sont emboîtées l'une dans l'autre, la spire mobile 14' étant mobile par rapport à la spire fixe 13'. L'organe de couple anti-rotation 15 est par exemple une bague de Oldham qui permet, en association avec l'arbre excentrique 10, de réaliser un mouvement circulaire de l'arbre excentrique 10 à partir d'un mouvement orbital de la spire mobile 14'.On the figure 2 , the spiro-orbital detent 8 comprises a fixed spiral element 13, a movable spiral element 14, an anti-rotation torque member 15 and the eccentric shaft 10 which is associated with a first face 26 of the spiro-orbital detent member 8 against which the moving spiral element 14 rests. The fixed spiral element 13 comprises a fixed turn 13 ', of the Archimedean spiral or circle pulling type, which comprises convolutions 13 The moving spiral element 14 comprises a mobile coil 14 'which is of the same type as that of the fixed coil 13', or which is homothetic to the latter. The moving coil 14 'is interposed between the convolutions 13 "of the fixed turn 13'. In other words, the fixed turn 13 'and the mobile turn 14' are nested one inside the other, the mobile turn 14 'being movable relative to the fixed turn 13'. The anti-rotation torque member 15 is for example an Oldham ring which makes it possible, in association with the eccentric shaft 10, to produce a circular movement of the eccentric shaft 10 from an orbital movement of the mobile coil 14 '.
  • Sur la figure 3, la spire mobile 14' subit un mouvement circo-orbital qui fait varier un volume interne 17 compris entre deux faces en vis-à-vis de la spire fixe 13' et la spire mobile 14'. Plus particulièrement, et en se reportant également sur la figure 4, la spire mobile 14' comporte une face externe mobile 14a' et une face interne mobile 14b', et la spire fixe 13' comporte une face externe fixe 13a' et une face interne fixe 13b'. La face externe mobile 14a' est la face de la spire mobile 14' qui est orientée vers l'extérieur de la spire mobile 14' tandis que la face interne mobile 14b' est la face de la spire mobile 14' qui est orientée vers l'intérieur de la spire mobile 14'. La face externe fixe 13a' est la face de la spire fixe 13' qui est orientée vers l'extérieur de la spire fixe 13' tandis que la face interne fixe 13b' est la face de la spire fixe 13' qui est orientée vers l'intérieur de la spire fixe 13'. Le volume interne 17 est délimité d'une part par la face externe mobile 14a' et la face interne fixe 13b' et d'autre part la face interne mobile 14b' et la face externe fixe 13a'.On the figure 3 , the mobile coil 14 'undergoes a circo-orbital movement which varies an internal volume 17 between two faces vis-à-vis the fixed turn 13' and the mobile coil 14 '. In particular, and also referring to the figure 4 , the spire mobile 14 'has a movable outer face 14a' and a movable inner face 14b ', and the fixed turn 13' has a fixed outer face 13a 'and a fixed inner face 13b'. The movable external face 14a 'is the face of the moving coil 14' which is oriented towards the outside of the mobile coil 14 'while the mobile inner face 14b' is the face of the mobile coil 14 'which is oriented towards the inside the mobile coil 14 '. The fixed outer face 13a 'is the face of the fixed turn 13' which is oriented towards the outside of the fixed turn 13 'while the fixed inner face 13b' is the face of the fixed turn 13 'which is oriented towards the inside the fixed turn 13 '. The internal volume 17 is delimited on the one hand by the mobile outer face 14a 'and the fixed inner face 13b' and on the other hand the movable inner face 14b 'and the fixed outer face 13a'.
  • La spire mobile 14' est positionnée de manière à ce que le volume interne 17 comprennent une pluralité de chambres d'expansion 18 qui sont diamétralement opposées les unes aux autres. La spire mobile 14' subit un mouvement orbital qui entraîne une augmentation successive d'un volume de chacune des chambres d'expansion 18. Une telle augmentation de volume des chambres d'expansion 18, visible sur les étapes successives numérotées de 1 à 8 décomposant le mouvement orbital de la spire mobile 14', permet une détente du premier fluide 7 qui circule depuis un orifice d'admission 19, ménagé sensiblement au centre radial des spires 13', 14' vers un orifice d'évacuation 20, ménagé à la périphérie radiale des spires 13',14'. Ces dispositions sont telles que le premier fluide 7 atteint une pression de décharge à l'orifice d'évacuation 20 qui est inférieure à une pression de charge à l'orifice d'admission 19.The moving coil 14 'is positioned so that the internal volume 17 comprises a plurality of expansion chambers 18 which are diametrically opposed to each other. The mobile turn 14 'undergoes an orbital movement which causes a successive increase in a volume of each of the expansion chambers 18. Such an increase in volume of the expansion chambers 18, visible on the successive steps numbered from 1 to 8 decomposing the orbital movement of the mobile coil 14 ', allows an expansion of the first fluid 7 which circulates from an inlet 19, formed substantially at the radial center of the turns 13', 14 'to a discharge orifice 20, provided at the radial periphery of the turns 13 ', 14'. These arrangements are such that the first fluid 7 reaches a discharge pressure at the discharge port 20 which is lower than a charge pressure at the inlet port 19.
  • Sur la figure 5, l'organe de détente spiro-orbital 8 comprend un carter 21 qui loge l'élément de spirale fixe 13 et l'élément de spirale mobile 14 et dont émerge l'arbre excentrique 10. Le carter 21 est également pourvu de l'orifice d'admission 19 du premier fluide 7 qui est préférentiellement ménagée à l'opposé de l'arbre excentrique 10. Le carter 21 délimite un volume d'enceinte 22 à l'intérieur duquel sont disposés l'élément de spirale fixe 13 et l'élément de spirale mobile 14, le volume d'enceinte 22 étant en relation aéraulique avec l'orifice d'admission 19. Le volume d'enceinte 22 loge un plateau 23 qui est interposé entre l'arbre excentrique 10 et l'élément de spirale mobile 14.On the figure 5 , the spiro-orbital detent 8 comprises a casing 21 which houses the fixed spiral element 13 and the movable spiral element 14 and from which emerges the eccentric shaft 10. The casing 21 is also provided with the orifice intake 19 of the first fluid 7 which is preferably arranged opposite the eccentric shaft 10. The housing 21 defines an enclosure volume 22 inside which are arranged the fixed spiral element 13 and the mobile spiral element 14, the enclosure volume 22 being in aeraulic relationship with the inlet orifice 19. The enclosure volume 22 houses a plate 23 which is interposed between the eccentric shaft 10 and the spiral element mobile 14.
  • L'organe de détente spiro-orbital 8 est avantageusement pourvu d'au moins un canal de dérivation 24 qui relie l'orifice d'admission 19 à au moins un point d'arrivée 25 ménagé en vis-à-vis du plateau 23. Plus particulièrement, le point d'arrivée 25 est ménagé en vis-à-vis de la première face 26 du plateau 23, la première face 26 étant pourvu de l'arbre excentrique 10. La première face 26 est par ailleurs la face opposée à une deuxième face 27 du plateau 23 qui est porteur de l'élément de spirale mobile 14.The spiro-orbital detent 8 is advantageously provided with at least one bypass channel 24 which connects the inlet orifice 19 with at least one end point 25 formed opposite the plate 23. More particularly, the arrival point 25 is formed vis-à-vis the first face 26 of the plate 23, the first face 26 being provided with the eccentric shaft 10. The first face 26 is also the opposite face to a second face 27 of the plate 23 which carries the mobile spiral element 14.
  • Le point d'arrivée 25 est avantageusement équipé d'un joint d'étanchéité 28 qui obstrue le canal de dérivation 24. Ce dernier véhiculant le premier fluide 7 à une pression qui est la pression la plus importante entre une pression d'admission et une pression de refoulement du premier fluide 7 à l'intérieur de l'organe de détente spiro-orbital 8 ou bien qui est une pression intermédiaire entre la pression d'admission et la pression de refoulement du premier fluide 7 à l'intérieur de l'organe de détente spiro-orbital 8, puisqu'en relation avec l'orifice d'admission 19, il en découle que le joint d'étanchéité 28 est constamment appuyé contre la première face 26 du plateau 23. Il en résulte un contact constant entre le joint d'étanchéité 28 et le plateau 23. Il en découle finalement que l'arbre excentrique 10 est isolé du premier fluide 7 et qu'une étanchéité optimisée est réalisée entre le volume d'enceinte 22 et l'arbre excentrique 10.The arrival point 25 is advantageously equipped with a seal 28 which obstructs the bypass channel 24. The latter conveys the first fluid 7 at a pressure which is the most important pressure between an intake pressure and a discharge pressure of the first fluid 7 inside the spiro-orbital expansion member 8 or which is an intermediate pressure between the inlet pressure and the discharge pressure of the first fluid 7 inside the spiro-orbital expansion member 8, since in relation to the inlet port 19, it follows that the seal 28 is constantly pressed against the first face 26 of the plate 23. This results in a constant contact between the seal 23 and the plate 23. It finally follows that the eccentric shaft 10 is isolated from the first fluid 7 and that an optimized seal is made between the enclosure volume 22 and the eccentric shaft 10.
  • Selon diverses variantes, l'organe de détente spiro-orbital 8 comprend un ou plusieurs canal/canaux de dérivation 24 tel que décrit ci-dessus, chaque canal de dérivation 24 étant équipé d'un joint d'étanchéité 28 en son point d'arrivée 25.According to various variants, the spiro-orbital expansion member 8 comprises one or more channels / bypass channels 24 as described above, each branch channel 24 being equipped with a seal 28 at its point of contact. arrival 25.
  • Préférentiellement, chaque canal de dérivation 24 est ménagé à l'intérieur d'une âme du carter 21, autrement dit à l'intérieur d'une matière constituant le carter 21 de telle sorte que l'organe de détente spiro-orbital 8 est le plus léger possible. De plus, un tel agencement du canal de dérivation 24 procure une isolation du volume d'enceinte 22 ménagé au coeur de l'organe de détente spiro-orbital 8, le canal de dérivation 24 étant lui ménagé en périphérie de l'organe de détente spiro-orbital 8. Préférentiellement, le canal de dérivation 24 est agencé en une enveloppe du volume d'enceinte 22 qui entoure ce dernier. Il en résulte aussi une minimisation d'un encombrement global de l'organe de détente spiro-orbital 8 et une optimisation du volume d'enceinte 22.Preferably, each bypass channel 24 is formed inside a core of the housing 21, in other words inside a material constituting the housing 21 so that the spiro-orbital expansion member 8 is the lighter possible. In addition, such an arrangement of the bypass channel 24 provides an isolation of the chamber volume 22 formed in the heart of the spiro-orbital expansion member 8, the bypass channel 24 being formed thereat on the periphery of the expansion member Preferably, the bypass channel 24 is arranged in an envelope of the enclosure volume 22 which surrounds the latter. It also results in a minimization of an overall size of the spiro-orbital detent 8 and an optimization of the speaker volume 22.
  • Il résulte de ces dispositions une isolation électrique entre la génératrice reliée à l'arbre excentrique 10 et le premier fluide 7 ce qui augmente une pérennité de l'arbre excentrique 10.It results from these provisions an electrical insulation between the generatrix connected to the eccentric shaft 10 and the first fluid 7 which increases durability of the eccentric shaft 10.
  • Il résulte par ailleurs de l'ensemble de ces dispositions que l'arbre excentrique 10 est portée à une température qui est la plus faible possible, ce qui procure une pérennité améliorée à l'arbre excentrique 10 lui-même, mais aussi à des roulements avec lequel l'arbre excentrique 10 est en relation.It also results from all these provisions that the eccentric shaft 10 is brought to a temperature which is as low as possible, which provides improved durability to the eccentric shaft 10 itself, but also to bearings with which the eccentric shaft 10 is in relation.
  • De plus, il est particulièrement avantageux que le canal de dérivation 24 équipé du joint d'étanchéité 28 soit en relation avec l'orifice d'admission 19 car il découle une sollicitation du joint d'étanchéité 28 qui est fonction d'une pression d'admission du premier fluide 7. Ainsi, une force appliquée par le joint d'étanchéité 28 sur le plateau 23 est proportionnelle à la pression d'admission du premier fluide 7, et il en découle qu'une force de maintien de l'élément de spirale mobile 14 contre l'élément de spirale fixe 13 est fonction des conditions d'utilisation de l'organe de détente spiro-orbital 8, ce qui minimise des frottements entre les deux dits éléments 14,14' et conforte une pérennité optimisée de l'organe de détente spiro-orbital 8.In addition, it is particularly advantageous that the bypass channel 24 equipped with the seal 28 is in relation with the inlet orifice 19 because it results in a stressing the seal 28 which is a function of an inlet pressure of the first fluid 7. Thus, a force applied by the seal 28 on the plate 23 is proportional to the inlet pressure of the first fluid 7 and it follows that a holding force of the movable spiral element 14 against the fixed spiral element 13 is a function of the conditions of use of the spiro-orbital expansion element 8, which minimizes friction between the two said elements 14,14 'and confirms an optimized durability of the spiro-orbital detent 8.

Claims (10)

  1. Organe de détente spiro-orbital (8) logeant un élément de spirale fixe (13) et un élément de spirale mobile (14), l'organe de détente spiro-orbital (8) comprenant un arbre excentrique (10) pourvu d'un plateau (23) porteur de l'élément de spiral mobile (14), l'organe de détente spiro-orbital (8) étant pourvu d'un orifice d'admission (19) d'un premier fluide (7), caractérisé en ce que l'organe de détente spiro-orbital (8) comprend au moins un canal de dérivation (24) qui est ménagé entre l'orifice d'admission (19) et un point d'arrivée (25) ménagé en vis-à-vis du plateau (23), et en ce que le point d'arrivée (25) est équipé d'un joint d'étanchéité (28).A spiro-orbital detent member (8) housing a fixed spiral member (13) and a movable scroll member (14), the spiro-orbital detent member (8) comprising an eccentric shaft (10) provided with a platen (23) carrying the movable spiral element (14), the spiro-orbital detent member (8) being provided with an inlet (19) of a first fluid (7), characterized in that that the expansion member spiro-orbital (8) comprises at least one bypass channel (24) which is provided between the inlet (19) and an end point (25) formed in facing -vis the tray (23), and in that the arrival point (25) is equipped with a seal (28).
  2. Organe de détente spiro-orbital (8) selon la revendication précédente, caractérisé en ce que le joint d'étanchéité (28) obstrue le canal de dérivation (24).Spiro-orbital detent member (8) according to the preceding claim, characterized in that the seal (28) obstructs the bypass channel (24).
  3. Organe de détente spiro-orbital (8) selon l'une quelconque des revendications précédentes, caractérisé en ce que le joint d'étanchéité (28) est en contact avec le plateau (23).Spiro-orbital detent member (8) according to one of the preceding claims, characterized in that the seal (28) is in contact with the plate (23).
  4. Organe de détente spiro-orbital (8) selon l'une quelconque des revendications précédentes, caractérisé en ce que le point d'arrivée (25) est ménagé en vis-à-vis d'une première face (26) du plateau (23) qui est pourvue de l'arbre excentrique (10).Spiro-orbital detent member (8) according to one of the preceding claims, characterized in that the end point (25) is arranged opposite a first face (26) of the plate (23). ) which is provided with the eccentric shaft (10).
  5. Organe de détente spiro-orbital (8) selon la revendication 4, caractérisé en ce que le joint d'étanchéité (28) est en contact avec la première face (26) du plateau (23).Spiro-orbital detent member (8) according to claim 4, characterized in that the seal (28) is in contact with the first face (26) of the plate (23).
  6. Organe de détente spiro-orbital (8) selon l'une quelconque des revendications précédentes, caractérisé en ce que le canal de dérivation (24) est ménagé à l'intérieur d'un carter (21) de l'organe de détente spiro-orbital (8) qui loge l'élément de spirale fixe (13) et l'élément de spirale mobile (14).Spiro-orbital expansion element (8) according to any one of the preceding claims, characterized in that the bypass channel (24) is formed inside a casing (21) of the spiral expansion element orbital (8) housing the fixed scroll member (13) and the movable scroll member (14).
  7. Organe de détente spiro-orbital (8) selon l'une quelconque des revendications précédentes, caractérisé en ce que le canal de dérivation (24) est agencé en une enveloppe d'un volume d'enceinte (22) qui loge l'élément de spirale fixe (13) et l'élément de spirale mobile (14).Spiro-orbital detent member (8) according to any one of the preceding claims, characterized in that the bypass channel (24) is arranged in an envelope of an enclosure volume (22) which houses the element of fixed spiral (13) and the movable spiral element (14).
  8. Boucle d'échange thermique (6) équipée d'un organe de détente spiro-orbital (8) selon l'une quelconque des revendications précédentes.Heat exchange loop (6) equipped with a spiro-orbital expansion element (8) according to any one of the preceding claims.
  9. Ligne d'échappement (2) d'un véhicule automobile équipée d'une boucle d'échange thermique selon la revendication 8.Exhaust line (2) of a motor vehicle equipped with a heat exchange loop according to claim 8.
  10. Véhicule automobile équipé d'une ligne d'échappement (2) selon la revendication 9.Motor vehicle equipped with an exhaust line (2) according to claim 9.
EP14190464.9A 2013-11-18 2014-10-27 Spiro-orbital expansion member Active EP2873803B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1361280A FR3013382B1 (en) 2013-11-18 2013-11-18 SPIRO-ORBITAL RELAXATION BODY

Publications (2)

Publication Number Publication Date
EP2873803A1 true EP2873803A1 (en) 2015-05-20
EP2873803B1 EP2873803B1 (en) 2016-08-17

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EP14190464.9A Active EP2873803B1 (en) 2013-11-18 2014-10-27 Spiro-orbital expansion member

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EP (1) EP2873803B1 (en)
FR (1) FR3013382B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2988127A1 (en) 2012-03-13 2013-09-20 Peugeot Citroen Automobiles Sa Coil for forming spiral element of spiro-orbital expansion device of heat exchange loop of internal combustion engine of car, has external face and fixed internal face that are made of ceramic material, and core made of ceramic material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2988127A1 (en) 2012-03-13 2013-09-20 Peugeot Citroen Automobiles Sa Coil for forming spiral element of spiro-orbital expansion device of heat exchange loop of internal combustion engine of car, has external face and fixed internal face that are made of ceramic material, and core made of ceramic material

Also Published As

Publication number Publication date
FR3013382A1 (en) 2015-05-22
EP2873803B1 (en) 2016-08-17
FR3013382B1 (en) 2015-12-25

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