FR2532991A1 - Rotary piston unit - Google Patents

Rotary piston unit Download PDF

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Publication number
FR2532991A1
FR2532991A1 FR8314708A FR8314708A FR2532991A1 FR 2532991 A1 FR2532991 A1 FR 2532991A1 FR 8314708 A FR8314708 A FR 8314708A FR 8314708 A FR8314708 A FR 8314708A FR 2532991 A1 FR2532991 A1 FR 2532991A1
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France
Prior art keywords
rotor
axis
rotary piston
machine
internal surface
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Granted
Application number
FR8314708A
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French (fr)
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FR2532991B1 (en
Inventor
Konrad Eckert
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of FR2532991A1 publication Critical patent/FR2532991A1/en
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Expired legal-status Critical Current

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Classifications

    • 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
    • F01C1/30Rotary-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
    • F01C1/40Rotary-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
    • F01C1/44Rotary-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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The rotary piston (e.g. hydraulic) pump or compressor comprises a housing (1) with end covers, inlet (4) and outlet (5) whose peripheral wall (2) has an other than cylindrical inner surface (3). A cylindrical hollow rotor in the housing has end covers and carries pivotable (11-13) two-armed sealing elements (14-16) whose outer ends (37-39) are in contact with the cylindrical inner surface. Their radially inner ends (34-36) are pivoted (28-30) to respective rings carried on bearings on a stub shaft (21) eccentric relative to the rotor and secured to one housing end cover.

Description

L'invention part d'une machine è piston rotatif dit à axe parallèle et intérieur, comprenant un corps stationnaire, dont la-paroi latérale présente une surface interne ayant en section droite une forme géométrique déterminée, à l'intérieur duquel est disposé un rotor -qui porte, dans la partie éloignée de l'axe des palettes montées oscillantes et constituant des pièces travaillantes, dont les bords radialement extérieurs coopèrent avec ladite surface interne pour delimiter des chambres de travail. The invention starts from a rotary piston machine said to have a parallel and internal axis, comprising a stationary body, the side wall of which has an internal surface having, in cross section, a predetermined geometric shape, inside which a rotor is disposed. which carries, in the part remote from the axis of the oscillating mounted pallets and constituting working parts, the radially outer edges of which cooperate with said internal surface to delimit working chambers.

Une telle machine à piston rotatif est conne (brevet allemand DE 2 626 449). Dans cette machine connue, l'axe du rotor est parallèle à l'axe du corps de la machine et les bielles, une pour chaque paulette, sont montées sur un arbre dont l'axe géométrique coïncide avec celui du corps de la machine. En raison de l'excentricité du montage des bielles par rapport l'axe du rotor, les bielles sont animées de mouvements et ces mouvements sont transmis aux palettes par un levier particulier articulé sur l'extrémite de la bielle.Le bord libre de chaque palette décrit ainsi une ligne circulaire le long de la surface interne de 1a paroi latérale du corps de la machine, de sorte qu'on obtient une bonne étanchéité des chambres de travail, séparées par les paulettes, lorsque cette surface interne présente en section droite une forme circulaire. Such a rotary piston machine is conne (German patent DE 2 626 449). In this known machine, the axis of the rotor is parallel to the axis of the body of the machine and the connecting rods, one for each shoulder, are mounted on a shaft whose geometric axis coincides with that of the body of the machine. Due to the eccentricity of the mounting of the connecting rods relative to the axis of the rotor, the connecting rods are animated and these movements are transmitted to the pallets by a particular lever articulated on the end of the connecting rod. The free edge of each pallet thus describes a circular line along the internal surface of the side wall of the machine body, so that good sealing of the working chambers, separated by the flaps, is obtained when this internal surface has a cross-sectional shape circular.

La construction connue a cependant l'inconvénient que les bielles et les leviers doivent être disposés à cbté du rotor, ce qui rend la machine connue relativement encombrante. The known construction has the drawback, however, that the connecting rods and the levers must be placed next to the rotor, which makes the known machine relatively bulky.

La sollicitation unilatérale du montage du rotor constitue un autre- inconvénient. Enfin, les masses mobiles sont relativement importantes.Another drawback is the unilateral stress on the mounting of the rotor. Finally, the moving masses are relatively large.

Selon l'invention - qui vise notamment è supprimer ces inconvénients -, une machine a piston rotatif comme indiqué ci-dessus est caractérisée en ce que chaque palette forme un levier du premier degré et présente un point d'attaque et d'articulation, pour lui imprimer le mouvement d'oscillation, d l'extrémité opposée a son bord libre.  According to the invention - which aims in particular to eliminate these drawbacks -, a rotary piston machine as indicated above is characterized in that each pallet forms a lever of the first degree and has a point of attack and of articulation, for give it the oscillation movement, from the end opposite its free edge.

Le principal avantage d'une machine ainsi réalisée est que le système de commande et de guidage des palettes est disposé a l'intérieur du rotor, ce qui se traduit par une réduction considérable de la longueur totale de la machine. The main advantage of a machine thus produced is that the control and guidance system for the pallets is arranged inside the rotor, which results in a considerable reduction in the total length of the machine.

Il s'y ajoute que le rotor n'est pas exposé à des couples latéraux. In addition, the rotor is not exposed to lateral torques.

Encore un autre avantage est que la masse des pièces animées de mouvements ensemble avec les palettes est réduite, ce qui permet -des vitesses de rotation plus élevées. Yet another advantage is that the mass of the moving parts together with the pallets is reduced, which allows higher rotation speeds.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre d'un exemple de réalisation non limitatif, ainsi que du dessin annexé, sur lequel
- la figure 1 est une vue de cêté schématique et partiellement en coupe axiale d'une machine selon l'invention; et
- la figure 2 est une coupe transversale de cette machine d piston rotatif, prise suivant la ligne II-II de la figure 1.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows of a nonlimiting exemplary embodiment, as well as from the appended drawing, in which
- Figure 1 is a schematic side view and partially in axial section of a machine according to the invention; and
- Figure 2 is a cross section of this rotary piston machine, taken along line II-II of Figure 1.

La machine représentée possède un corps stationnaire 1 composé d'un carter central ou principal 2 et de deux carters d'extrémité 44, 45. Le carter central 2 présente une surface interne 3 (figure 2) dont la forme en section droite s'écarte d'une forme circulaire. Une telle cavité non circulaire est actuellement réalisable de façon simple, par exemple par enlèvement de copeaux sur un tour-rectifieuse programmé. The machine shown has a stationary body 1 composed of a central or main casing 2 and two end casings 44, 45. The central casing 2 has an internal surface 3 (FIG. 2) whose shape in cross section deviates of a circular shape. Such a non-circular cavity is currently achievable in a simple manner, for example by removing chips on a programmed lathe-grinder.

Le corps 1 possède une tubulure d'admission 4 et une tubulure de refoulement 5 et son espace intérieur est fermé aux extrémités par les carters 44 et 45. Un rotor 6 de section droite circulaire est disposé excentré par son axe 7 par rapport a la surfàce interne 3 du carter central 2, de manière que son pourtour touche presque la surface interne 3 a l'endroit désigné par "A".  The body 1 has an intake manifold 4 and a discharge manifold 5 and its interior space is closed at the ends by the casings 44 and 45. A rotor 6 of circular cross section is disposed eccentrically by its axis 7 relative to the surface internal 3 of the central casing 2, so that its periphery almost touches the internal surface 3 at the place designated by "A".

Le pourtour du rotor 6 présente trois rainures longitudinales 8, 9 et 10, recevant chacune une palette 14, 15 respectivement 16. Ces palettes possèdent exactement la même longueur que le rotor 6 et celui-ci possède en outre aux extrémités, deux flasques 32 et 33 qui portent les axes 11, 12 et 13 sur lesquels sont montées oscillantes les palettes 14, 15 et 16, dont les tranches frottent sur les flasques 32, 33. The periphery of the rotor 6 has three longitudinal grooves 8, 9 and 10, each receiving a pallet 14, 15 respectively 16. These pallets have exactly the same length as the rotor 6 and the latter also has at the ends, two flanges 32 and 33 which carry the axes 11, 12 and 13 on which the oscillating pallets 14, 15 and 16 are mounted, the edges of which rub on the flanges 32, 33.

Les deux flasques 32 et 33. du rotor sont fixés chacun par trois vis 17 18, 19 au rotor 6 et chacun dieux possède en plus une portion annulaire de centrage qui fait saillie dans un évidement correspondant du carter 44 ou 45 et qui est munie d'un palier lisse ou d'un roulement. The two flanges 32 and 33. of the rotor are each fixed by three screws 17 18, 19 to the rotor 6 and each god has in addition an annular centering portion which projects into a corresponding recess in the casing 44 or 45 and which is provided with '' a plain bearing or a bearing.

L'un des deux carters ex tr d mes 44, 45, le carter 44 dans cet exemple, porte un tourillon 21 quiet solidaire de lui et sur lequel sont montées rotatives, l'une derrière l'autre, trois bielles 22, 23 et 24, chacune avec interposition d'un roulement 25, 26 ou 27. Les bielles sont relativement courtes et chacune d'elles possède un oeil 28, 29 ou 30, sur lequel est articulée une extrémité 34, 35 ou 36 de l'une des palettes 14 à 16.Chaque palette forme un levier du premier degrd, dont le bord libre 37, 38 ou 39 circule le long de la surface interne 3 du carter central et qui est animé d'oscillations autour de l'axe 11, 12 ou 13 par la liaison articulée à l'oeil 28, 29 ou 30 d'une des bielles. One of the two casings ex tr d mes 44, 45, the casing 44 in this example, carries a journal 21 quiet secured to it and on which are rotatably mounted, one behind the other, three connecting rods 22, 23 and 24, each with the interposition of a bearing 25, 26 or 27. The connecting rods are relatively short and each of them has an eye 28, 29 or 30, on which is articulated one end 34, 35 or 36 of one of the pallets 14 to 16. Each pallet forms a lever of the first degree, whose free edge 37, 38 or 39 circulates along the internal surface 3 of the central casing and which is animated by oscillations around the axis 11, 12 or 13 by the articulated connection to the eye 28, 29 or 30 of one of the connecting rods.

Pour l'entrainement du rotor 6 dans le corps sta tionnaire 1 > le flasque 32 du rotor porte un arbre d'entraînement central 41 qui est monté par deux roulements à billes 42, 43 dans le carter extrême 45 et dont l'extrémité porte une poulie à courroie non représentée ou un élément d'-entraînement analogue. Ltautre flasque 33 du rotor est monté rotatif sur le carter extrême 44 par un roulement à billes 40. For driving the rotor 6 in the stationary body 1> the flange 32 of the rotor carries a central drive shaft 41 which is mounted by two ball bearings 42, 43 in the extreme casing 45 and the end of which carries a belt pulley not shown or a similar drive element. The other flange 33 of the rotor is rotatably mounted on the extreme casing 44 by a ball bearing 40.

Fonctionnement
L'entraînement de l'arbre 41 fait tourner le rotor 6 avec les deux flasques 32 et 33. Les trois bielles 22, 23 et 24, montées rotatives sur le tourillon fixe 21, animent les bords libres 37, 38 et 39 des palettes 14, 15 et 16 de mouvements dont la forme s'écarte d'un mouvement circulaire. Les trois chambres de travail délimitées par les palettes changent leurs volumes pendant chaque tour du rotor 6, ce qui produit le transport d'un fluide hydraulique ou gazeux de la tubulure d'admission 4 a la tubulure de refoulement 5.
Operation
The drive of the shaft 41 rotates the rotor 6 with the two flanges 32 and 33. The three connecting rods 22, 23 and 24, rotatably mounted on the fixed pin 21, animate the free edges 37, 38 and 39 of the pallets 14 , 15 and 16 of movements whose shape deviates from a circular movement. The three working chambers delimited by the pallets change their volumes during each revolution of the rotor 6, which produces the transport of a hydraulic or gaseous fluid from the intake manifold 4 to the discharge manifold 5.

I1 est à noter que la masse des pièces mobiles est très petite et que la construction selon l'invention apporte un mécanisme simple pour la commande des palettes. Bien que ce mécanisme ne fasse pas circuler les bords libres des palettes suivant un trajet circulaire, la surface interne 3 - de forme correspondante - du carter principal de la machine > formant la paroi latérale du corps l, est réalisable très simplement par les moyens modernes, de sorte que l'invention crée dans l'ensemble une machine à piston rotatif économique, peu sensible aux perturbations et pouvant avoir des vitesses de rotation élevées. It should be noted that the mass of the moving parts is very small and that the construction according to the invention provides a simple mechanism for controlling the pallets. Although this mechanism does not circulate the free edges of the pallets in a circular path, the internal surface 3 - of corresponding shape - of the main casing of the machine> forming the side wall of the body l, is very simply achievable by modern means , so that the invention as a whole creates an economical rotary piston machine, not very sensitive to disturbances and which can have high speeds of rotation.

Il est dans le cadre de l'invention de choisir un autre nombre de palettes à la place des trois palettes de l'exemple représenté et décrit.  It is within the scope of the invention to choose another number of pallets in place of the three pallets of the example shown and described.

Claims (2)

REVENDICATIONS 1. Machine à piston rotatif dit à axe parallèle et intérieur - dans laquelle l'axe du rotor est parallèle à l'axe ou corps de la machine et des bielles commandant des palettes sur le rotor tournent autour de l'axe du corps -, comprenant un corps stationnaire, dont la paroi latérale présente une surface interne ayant en section droite une forme géométrique déterminée, à l'intérieur duquel est disposé un rotor qui porte, dans sa partie éloignée de l'axe, des palettes montes oscillantes et constituant des pièces travaillantesZ dont les bords radialement extérieurs coopèrent avec ladite surface interne pour délimiter des chambres de travail, caractérisée en ce que chaque palette (14, 15, 16) forme un levier du premier degré et présente un point d'attaque et d'articulation (oeil de bielle 28, 29, 30), pour lui imprimer le mouvement d'oscillation, à l'extrémité opposée à son bord libre (37, 38, 39).1. Rotary piston machine said to have a parallel and internal axis - in which the axis of the rotor is parallel to the axis or body of the machine and connecting rods controlling the vanes on the rotor rotate around the axis of the body -, comprising a stationary body, the side wall of which has an internal surface having, in cross section, a predetermined geometric shape, inside which is arranged a rotor which carries, in its part remote from the axis, oscillating mounted pallets and constituting working partsZ whose radially outer edges cooperate with said internal surface to delimit working chambers, characterized in that each pallet (14, 15, 16) forms a lever of the first degree and has a point of attack and of articulation ( connecting rod eye 28, 29, 30), to give it the oscillation movement, at the end opposite to its free edge (37, 38, 39). 2. Machine à piston rotatif selon la revendication 1, caractérisée en ce que chaque palette (14, 15, 16) est articulée directement sur une bielle (22, 23, 24) et en ce que les bielles sont montées rotatives autour d'un tourillon. commun fixe (21) qui est excentré par rapport au rotor (6) et est solidaire de l'un- (44) des deux carters extrêmes (44, 45) du corps (1) de la machine. 2. rotary piston machine according to claim 1, characterized in that each pallet (14, 15, 16) is articulated directly on a connecting rod (22, 23, 24) and in that the connecting rods are rotatably mounted around a trunnion. common fixed (21) which is eccentric relative to the rotor (6) and is integral with one- (44) of the two end housings (44, 45) of the body (1) of the machine.
FR8314708A 1982-09-15 1983-09-15 ROTARY PISTON MACHINE COMPRISING PALLETS DRIVEN BY CONNECTING RODS, IN PARTICULAR USE AS A COMPRESSOR OR PUMP Expired FR2532991B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823234199 DE3234199A1 (en) 1982-09-15 1982-09-15 Parallel and internal axis rotary piston engine

Publications (2)

Publication Number Publication Date
FR2532991A1 true FR2532991A1 (en) 1984-03-16
FR2532991B1 FR2532991B1 (en) 1988-02-12

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ID=6173280

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8314708A Expired FR2532991B1 (en) 1982-09-15 1983-09-15 ROTARY PISTON MACHINE COMPRISING PALLETS DRIVEN BY CONNECTING RODS, IN PARTICULAR USE AS A COMPRESSOR OR PUMP

Country Status (3)

Country Link
JP (1) JPS5974302A (en)
DE (1) DE3234199A1 (en)
FR (1) FR2532991B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19513197A1 (en) * 1995-03-31 1996-10-02 Hellmut Dr Ing Gerst Generating cyclic volume changes of rotary chambers
CN103912489B (en) * 2014-03-10 2016-05-25 汤斌 Eccentric moving vane pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070791A (en) * 1936-02-03 1937-02-16 Henry E Hubbard Fluid pump
GB608800A (en) * 1939-11-07 1948-09-21 Torleif Schiander Rotary pump for air and gases
FR2315020A1 (en) * 1975-06-16 1977-01-14 Realisa Financieres Cales Et ROTARY MACHINE WITH CHECKED AND MAINTAINED RETRACTABLES, SUCH AS BLADES OR PISTONS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR344678A (en) * 1903-11-05 1904-11-10 John Thomas Pagan Rotary machine
US1550835A (en) * 1923-10-11 1925-08-25 John A Morgan Rotary engine
DE2616322A1 (en) * 1976-04-14 1977-12-01 Rudolf Hagedorn Rotary hydraulic pump or motor - has eccentric cylindrical rotor between mutually eccentric inner and outer stator cylinders
CH618771A5 (en) * 1978-02-10 1980-08-15 Idram Eng Co Est

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070791A (en) * 1936-02-03 1937-02-16 Henry E Hubbard Fluid pump
GB608800A (en) * 1939-11-07 1948-09-21 Torleif Schiander Rotary pump for air and gases
FR2315020A1 (en) * 1975-06-16 1977-01-14 Realisa Financieres Cales Et ROTARY MACHINE WITH CHECKED AND MAINTAINED RETRACTABLES, SUCH AS BLADES OR PISTONS

Also Published As

Publication number Publication date
DE3234199A1 (en) 1984-03-15
JPS5974302A (en) 1984-04-26
FR2532991B1 (en) 1988-02-12

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