EP0578853B1 - Machine rotative avec profiles conjugués en contact continu - Google Patents

Machine rotative avec profiles conjugués en contact continu Download PDF

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Publication number
EP0578853B1
EP0578853B1 EP92112084A EP92112084A EP0578853B1 EP 0578853 B1 EP0578853 B1 EP 0578853B1 EP 92112084 A EP92112084 A EP 92112084A EP 92112084 A EP92112084 A EP 92112084A EP 0578853 B1 EP0578853 B1 EP 0578853B1
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Prior art keywords
rotors
stator
profiles
machine
rotor
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EP92112084A
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German (de)
English (en)
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EP0578853A1 (fr
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Mario Antonio Morselli
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Individual
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Individual
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Priority to DE59207259T priority patent/DE59207259D1/de
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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
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/126—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with elements extending radially from the rotor body not necessarily cooperating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/003—Systems for the equilibration of forces acting on the elements of the machine
    • F01C21/006—Equalization of pressure pulses

Definitions

  • the present invention relates to a rotary machine which can be used as a compressor for suppressible media, as a pump for non-suppressible liquids, or as a motor operated by suppressible or non-suppressible media.
  • the invention relates to a machine whose rotary chambers are delimited by a surface of a stator and the surfaces of two or more counter-rotating rotors (or “rotating pistons") which have conjugate profiles.
  • the rotation of the rotors is synchronized by means of gears located on the outside of the machine.
  • Roots compressor two runners have two or three protrusions with straight or helical generatrices; the compression chamber is defined by the body of the stator and the protrusions of one of the rotors; therefore the compression ratio is 1 and the compression takes place because of the backflow of the medium and in an irregular manner.
  • Such a machine the efficiency of which is lower than that of the machines in which the compression is at least partially gradual, is only used in the case of very low compression ratios.
  • Compressor “Waade” it is similar to the previous compressor. Partial compression in the compression chambers can be achieved in this compressor by the design of the projections of the rotors, as a result of which the compression ratio can be adjusted by changing the width of the inlet opening; its compression ratio can reach 3.
  • Compressor “Bicera” the compression ratio of this compressor can be changed during operation by changing the position of the inlet openings. The application of this machine is currently tentative.
  • Compressor “Lysholm” or screw compressor it is with two rotors equipped with helical projections, the profiles of which are unequal: one of the profiles is convex, the second is concave.
  • the helical line between two successive protrusions of one of the stators and one of the rotors is divided into two chambers by contact with the protrusion of the second stator. As the rotors rotate, this contact moves axially between a first end of the stator in which the input opening is located and a second end in which the output opening is arranged; therefore the volume of the chamber gradually decreases.
  • This compressor is used to generate compressed air with compression ratios up to 5 and flow rates up to 6 m 3 x sec -1 .
  • Compressor “Hunter” in the course of delivery of the agent from the entrance to the exit, one of the two rotors safely causes the tightness; the active member consists of the second rotor, which is equipped with projections running in contact with the walls of the outside of the stator and a stable inner member.
  • the same can be used as compressors, pumps or motors operated by suppressible or non-suppressable media.
  • the machine described in this document has no common or triple contact on the edge of the stator.
  • DE - A 677 150 relates to a rotary lobe pump in which the inlet and outlet slots "t” and “u” are arranged in the end walls of the housing in the region of the recesses “e” so that they can be controlled by these recesses during operation.
  • the outlet slots “t” are connected to the line “w” through the line "v”, while the outlet slots “u” are connected to the line "x” through the lines "y”.
  • the pump works in the following way:
  • the rotating bodies "b” and “b 1 " rotate in the direction indicated by the arrows in Fig.l. As they move away from the position shown, which marks the beginning of the suction stroke, the volume enclosed by the wings on the inlet side is increased and the conveying means; Air, gas or the like is sucked in through the slots "t". At the same time, the volume enclosed between the other sides of the wing pistons is reduced, so that the charge sucked in in the previous working stroke is compressed.
  • This pump is equipped with rotors with a simple projection; therefore the stator is not isolated from the outside of the machine.
  • FR-A-2 593 857 shows a pump for gases or liquids which is made up of two cylindrical cavities existing housing includes; the cavities are interconnected and each contain a helical rotor; each of the rotors includes an axis which passes through the walls of the housing and is connected to a pinion; the pinions mesh with each other and the movements of the motor transmitted to one of the pinions cause the rotors to rotate in opposite directions; the housing includes two openings on the wall opposite the pinion, one of the openings for suction and the second for outflow; in the 0 ° position the two openings are closed by the rotors; the pump is reversible by simply reversing the direction of rotation.
  • This pump has a single tooth and does not allow progressive pressure drops that serve to increase volumetric efficiency.
  • GB-2137696 describes a capsule pump with two shafts comprising: a cavity, two rotors contained in the cavity which rotate with the shafts, each of the rotors being provided with a shoulder and a notch cut; the pump also has an inlet opening and a first outlet opening, which is located at the front end of the cavity and which works together with one of the rotors through which it is controlled so that an internal compression of the medium to be pumped takes place; finally the pump is equipped with a second outlet opening which works together with a pressure relief valve.
  • the pump of this document has the same drawbacks as the pump described in FR-A-2 593 857.
  • FR - A 2 109 922 shows a compression system comprising two compressors which are used for the step-like compression of a medium.
  • the high pressure stage has a cavity with a compression chamber and two intersecting bores in which a main rotor and a valve rotor are contained, each of the rotors having a hub from which at least one radial tooth rises.
  • a cavity is provided in the area of the tooth, which enables the passage of a tooth of the other rotor in the course of a contact of the contours of the rotors, the contact serving for the tightness between the rotors.
  • Another compressor forms a low-pressure stage and has a cavity with at least one compression chamber, and movable compression means in the cavity to compress the medium.
  • the system comprises inlet openings and outlet openings in the high pressure stage, inlet openings and outlet openings in the low pressure stage, a connection between the outlet opening of the low pressure stage and the inlet opening of the high pressure stage and driving means which actuate the compression means of the high pressure stage to compress the medium according to the successive stages.
  • the machine described in this document has no common or triple contact on the edge of the stator.
  • the independent claim emphasizes the shape of the protrusions of the rotors, the edges of which are rounded so that no sharp connecting edge is obtained.
  • this feature denies the possibility of having a triple touch under the edge caused by the intersection of the two cylinders, the edge of a first rotor and the edge of a second rotor.
  • a rotary machine with high volumetric efficiency can be obtained in which a series of pressure drops between the high pressure area and the low pressure area prevents the uncontrolled leakage of the medium to the outside of the machine or from the high pressure area to the low pressure area.
  • the invention seeks to remedy this.
  • the invention solves the problem of creating a rotary machine with conjugated profiles in continuous contact.
  • the following result can be achieved: the tip of the tooth of one rotor leaves contact with the inner wall of the stator at the same time that the tooth comes into contact with the tip of the tooth of the other rotor; an angular position is confirmed at this moment in which there is a triple contact between the teeth and the edge of the stator.
  • the advantages achieved by using the invention are that the uncontrolled leakage of the medium to the outside of the machine or from the high pressure area to the low pressure area is prevented by a pressure drop between the high pressure area and the low pressure area.
  • a secondary line for connecting one of the chambers, in which an irregular pressure value for the operation of the machine occurs, is preferably to one of the lines mentioned.
  • the secondary line connects an inlet opening with a chamber with variable volume, the secondary line with a throttle valve for determining the flow of the medium supplied by the chamber to one of the lines mentioned, in order to limit the pressure of the medium at the start of the working cycle.
  • each of the connecting edges of a rotor begins rotating in a common cavity of adjacent hollow cylinders at the same time that it comes into contact with the side surface of the adjacent rotor.
  • the figures represent a rotating machine with conjugated profiles in continuous contact as well as structural and functional parts of the same machine.
  • a rotary machine 1 essentially consists of a stator 2 located in a central plate 3 and two side plates 4 and 5, which include the central plate 3.
  • a drive 8 ensures the rotation of the shaft 6, to which it is attached.
  • Two toothed wheels 9 and 10 engage with each other to synchronize the rotary movements of the shafts 6 and 7.
  • a first rotor 11 rotates with the shaft 6 and a second rotor 12, which is adjacent to the first rotor 11, rotates with the shaft 7, the rotors 11 and 12 being located in a cavity 13 of the central plate 3; the stator 2 is formed from the middle plate 3 and from the side plates 4 and 5.
  • the cavity 13 shows the cavity 13 in which the rotors 11 and 12 rotate in opposite directions; the cavity 13 consists of two hollow cylinders 14 and 15, the axes of symmetry of which are parallel to the axis of symmetry of the stator 2.
  • the rotor 11 rotates in the hollow cylinder 14 and the rotor 12 rotates in the hollow cylinder 15.
  • the hollow cylinders 14 and 15 are interspersed with one another such that the rotor 11 in the hollow cylinder 15 and the rotor 12 rotate in the hollow cylinder 14 in the course of rotation and at certain angular positions.
  • the rotors 11 and 12 are in opposite directions; their directions of rotation are indicated by the arrows F 1 and F 2 .
  • An intake line 16 connects the cavity 13 to an inlet opening equipped with a filter (not shown), which ensures that a medium enters the machine.
  • An exit opening 17 made in the plate 4 is located in a predetermined position of the hollow cylinder 14. Such an exit opening, not shown, is made in the plate 5. From this and from the outlet opening 17 begins an outflow line 18 which is connected to a user or to a container for the medium used.
  • exit opening (not shown) is not designated in the wake.
  • the hollow cylinder 15 is connected to the suction line 16 by a secondary line 19, the first end 20 of which opens into the hollow cylinder 15 and the second end 21 into the suction line 16.
  • a throttle valve 22 is provided in the secondary line 19 for controlling the flow of the medium through the same secondary line 19.
  • a groove 23 is provided for connecting the suction line 16 to a part of the cavity 13; the purpose of this connection is explained below.
  • the rotor 12 has first and second sides 24 and 25 which slide on walls 26 and 27 with very little friction; the walls 26 and 27 each belong to the plates 4 and 5 and delimit the cavity 13 by two surfaces which are perpendicular to the axis of symmetry of the same cavity 13. This prevents undesired leakage of the medium during the operation of the machine.
  • the rotors 11 and 12 have the same profiles, the design of which is selected such that the same rotors are in continuous contact during their rotation in order to limit chambers with variable volume, the chambers driving the medium during the rotation of the rotors, compressing them and let it expand.
  • Such a profile is formed from an involute connected to a trochoid.
  • the profiles of the rotors 11 and 12 each comprise two identical involute contours E 1 , E 2 , E 3 and E 4 and two identical trochoid contours T 1 , T 2 , T 3 and M 4 .
  • the involute contour E 1 is located in the rotor 11 between an edge C 1 and a connection point R 1 , the trochoid contour T 1 extends between the connection point R 1 and an edge C 2 ; the involute contour E 2 is arranged between the edge C 2 and a connection point R 2 , and the trochoid contour T 2 is provided between the connection point R 2 and the edge C 1 .
  • the involute contour E 3 is located in the rotor 12 between an edge C 3 and a connection point R 3 , the trochoid contour T 3 extends between the connection point R 3 and an edge C 3 ; the involute contour E 4 is arranged between the edge C 4 and a connection point R 4 , and the trochoid contour T 4 is provided between the connection point R 4 and the edge C 4 .
  • Figures 4 to 8 explain the operation of the machine 1 in successive angular positions of the rotors 11 and 12 in the course of their synchronized rotary movements.
  • the line 16 is connected to the chamber 28 with variable volume; the chamber 28 is located. between the contours E 1 and T 1 of the rotor 11, the contours E 3 e T 3 of the rotor 12 and the side wall 29 of the stator 2.
  • the edges C 1 and C 4 of the rotors 11 and 12 are in contact with the side wall 29 ; the medium contained in the chamber 30 has been compressed since the volume of the chamber 30 is smaller than the volume of the chamber 28, the chamber 30 being between the contours E 2 and T 2 of the rotor 11 and the contours E 4 e T 4 of the rotor 12 and the side wall 29 of the stator 2.
  • the rotor 11 closes the outlet opening 17 connected to the outflow line 18 and the groove 23 connects the line 16 to a chamber 31 with variable volume, which by touching the edge C 2 with the contour T 4 and the contour E 2 with the contour E. 4 is limited.
  • the pressure of the medium in the chamber 31 remains constant in the suction value in order to prevent the resistances caused by excessive expansion, since the chamber 31 tends in the directions F 1 and F 2 during the rotation of the rotors 11 and 12. to stretch.
  • the angular position shown in FIG. 5 was achieved by synchronized rotation of the rotors 11 and 12 in the directions F 1 and F 2 .
  • the medium previously contained in the chamber 28 is in two chambers 28a and 28b, the chamber 28a and 28b each by the contours E 1 and T 1 of the rotor 11, the contours E 3 and T 2 of the rotor 12 and will limit the wall 29 of the stator 2.
  • the pressure of the medium contained in the chambers 28a and 28b is equal to the pressure of the medium which was previously found in the chamber 28, since the total volume of the chambers 28a and 28b is equal to the volume of the chamber 28.
  • the pressure of the medium in the chamber 30a is greater than the pressure of the medium previously contained in the chamber 30, since the volume of the chamber 30a is less than the volume of the chamber 30, the chamber 30a being defined by the contours T 2 and E 4 in mutual contact, the edge C 1 and C 2 and the wall 29 with which the edge C 1 and C 2 are in contact is limited.
  • the chamber 30a is delimited by the contours E 2 e T 2 and E 4 . In this operating state, the pressure of the medium contained in the chamber 30 reaches its maximum value because the rotor 11 has not yet opened the outlet opening 17.
  • the angular position shown in FIG. 6 was achieved by a further synchronized rotation of the rotors 11 and 12 in the directions F 1 and F 2 . Because of this rotation, the opening is opened by the rotor 11 so that medium then flows from the chamber 30b to the outflow line 18. In this operating state, the total volume of the chambers 28a and 28b has not changed, so that the pressure value of the medium has remained constant.
  • the edges C 1 and C 3 are in mutual contact to prevent undesired leakage from the outlet opening 17 in order to achieve the maximum volumetric efficiency, the contact in the connecting edge of the hollow cylinder 14 with the hollow cylinder 15 in which the chambers 28 and 30 are variable Part of the stator containing the volume.
  • the chamber 30b is delimited by the contours E 2 and T 2 , the edge C 1 of the rotor 11 and the edge C 2 of the rotor 12 in the course of the mutual contact of the contours E 2 , T 2 and E 4 , T 4 .
  • the angular position shown in FIG. 7 was achieved by a further synchronized rotation of the rotors 11 and 12 in the directions F 1 and F 2 .
  • the chamber 30c is connected to the suction pipe 16; in addition, chambers 28a and 28b are assembled to form a single chamber 28c in which the pressure value of the medium is equal to the pressure value of the medium in the separate chambers 28a and 28b.
  • the outlet opening 17 is connected to the chamber 30c, which is limited by the contact of the edge C 3 with the contours E 2 and T 2 and the contours E 2 , T 2 and E 4 , T 4 .
  • the medium thus opens into the outflow line 18 with a pressure value that is hardly greater than the pressure value of the user or the container.
  • the volume of the chamber 30c is smaller than the volume 30b of FIG. 6, but the pressure of the medium does not increase because the rotor 11 has opened the outlet opening.
  • the angular position shown in FIG. 8 was achieved by a further synchronized rotation of the rotors 11 and 12 in the directions F 1 and F 2 .
  • the compression of the medium contained in the chamber 28c begins.
  • the throttle valve 22 is actuated, which controls the flow of the medium supplied from the chamber 28c to the suction line 16 until the edge C 4 the end 20 of the line 19 as the rotor 11 rotates in the direction of F 1 .
  • the reduction in the volume of the chamber 30d continues until the rotor 11 exits the outlet closes again.
  • the edge C 1 is in contact with the connection point R3. Such contacts occur between the edge C3 and the connection point R1 and so on in order to achieve an operation of the machine with low noise and wear.
  • a circulation machine was thus created by means of which the mutual separation of chambers with variable volume is achieved in order to prevent leakage of the medium to parts with low pressure in any angular position of the rotors.
  • Appropriate dimensions and positions of the groove 23 can be used to achieve controlled leakage paths in order to prevent undesired pressure differences in the various applications of the machine with non-suppressable liquids.
  • each of the edges C 1 , C 2 , C 3 , C 4 , C 5 , C 6 is with two contours E 1 , T 1 , E 2 , T 2 , E 3 , T 3 , E 4 , T 4 , E 5 , T 5 , E 6 , T 6 connected by a circular contour K 1 , K 2 , K 3 , K 4 , K 5 and K 6 , which on the side wall 29 of one of the hollow cylinders 14 or 15 to maintain a primary Tightness slides, each of the circular contours having two separate connecting edges W 1 , W 2 , W 3 , W 4 , W 5 , W 6 , C 1 , C 2 , C 3 , C 4 , C 5 , C 6 .
  • each of the rotors 11, 12 has three involute contours E 1 , E 2 , E 3 and three trochoid contours T 1 , T 2 , T 3 .
  • the two rotors are the same as the previous rotors.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Claims (8)

  1. Machine rotative avec profiles conjugués en contact continu, comprenant les suivants éléments:
    un stator (2), la première part duquel est jointe à une tuyauterie d'admission (16) et la seconde parte est jointe à une tuyauterie de sortie (18) pour un fluide; la tuyauterie de sortie (18) étant reliée à un utilisateur ou à un réservoir;
    une pluralité de rotors (11,12) adjacents et contre-rotants en synchronie, qui sont logés dans une cavité (13) du stator (2), les rotors (11,12) envoient le fluide de la tuyauterie d'admission (16) à la tuyauterie de sortie (18); chaque des rotors (11,12) est logé dans un cylindre creux (14,15) contenu dans la cavité (13); deux cylindres creuses (14,15) adjacents étant introduits dans la partie centrale du stator (2) pour former deux coins et une cavité commune, dans la quelle les rotors (11,12) tournent dans une déterminée position angulaire;
    des éléments de synchronisation (6,7) pour synchroniser les rotations des rotors (11,12);
    les rotors (11,12) présentent surfaces latérales, qui consistent en premières profiles (E1,E2,E3,E4,E5,E6) et en seconds profiles (T1,T2,T3,T4,T5,T6), qui restent in contact continu durant la rotation des rotors (11,12), pour délimiter des chambres (28,28a,28b,28c,30,30a,30b,30c,30d) à volume variable dans le stator (2), les chambres (28,28a,28b,28c,30,30a,30b,30c,30d) déplacent, compriment et font étendre le fluide durant la rotation des rotors (11,12); et
    les rotors (11,12) sont doutés d'une pluralité de dents ou lobes;
       caractérisée en ce que la pointe de la dent d'un rotor (11) abandonne le contact avec la paroi interne du stator (2) en le même instant que la dent vienne à contact avec la pointe de la dent d'autre rotor (12); en cet instant une position angulaire se produit, dans la quelle un triple contact entre les dents et le coin (I1) du stator (2) a lieu.
  2. Machine rotative suivant la revendication 1, caractérisée en ce que chaque des premières profiles (E1,E2,E3,E4,E5,E6) est relié à un des seconds profiles (T1,T2,T3,T4,T5,T6) par une partie en forme d'un arc de cercle (K1, K2,K3,K4,K5,K6), chaque des parties en forme d'un arc de cercle (K1,K2,K3, K4,K5,K6) présentant deux coins de raccord (W1,W2,W3,W4,W5,W6, C1,C2,C3,C4,C5,C6).
  3. Machine rotative suivant la revendication 2, caractérisée en ce que chaque des premières profiles (E1,E2,E3,E4,E5,E6) est raccordé à un des seconds profiles (T1,T2,T3,T4,T5,T6) par une partie en forme d'un arc de cercle (K1,K2,K3,K4,K5,K6), sur la quelle la paroi interne (29) d'un logement cylindrique (14,15) glisse.
  4. Machine rotative suivant la revendication 1, caractérisée en ce que chaque des premières profiles (E1,E2,E3,E4,E5,E6) comprend identiques bords en forme d'une développante et aussi chaque des seconds profiles (T1,T2, T3,T4,T5,T6) comprend identiques bords en forme d'une trochoid; chaque des bords en forme d'une développante étant raccordé avec le relatif bord en forme d'une trochoid par un point de raccord (R1,R2,R3,R4,R5,R6).
  5. Machine rotative suivant la revendication 1, caractérisée en ce que chaque des premières et des seconds profiles (E1,E2,E3,E4,E5,E6,T1,T2,T3,T4, T5,T6) présent des coins de raccord (W1,W2,W3,W4,W5,W6), que viennent in contact avec la paroi latérale (29) du stator (2) ou avec le bord d'un rotor (11,12) adjacente durant la rotation des rotors (11,12).
  6. Machine rotative suivant la revendication 1, caractérisée en ce que une canalisation de by pass (19) relie la tuyauterie d'admission (16) à une chambre (28,30,31) à volume variable; la canalisation de by pass (19) étant fournie d'une soupape d'étranglement (22) pour régler le débit du fluide envoyé de la chambre (28,30,31) à la tuyauterie d'admission (16) ou à la tuyauterie de sortie (18), pour définir la pression du fluide au début de la phase de travail.
  7. Machine rotative suivant la revendication 1, caractérisée en ce que la canalisation de by pass (19) relie une des chambres (31), dans la quelle une irrégulière valeur de pression pour le fonctionnement de la machine a lieu, à une des susdites tuyauteries d'admission ou de sortie (16,18).
  8. Machine rotative suivant les précédents revendications, caractérisée en ce que la machine (1) peut être utilisée comm'un compresseur pour des fluides compressibles, comm'une pompe pour des liquides non compressibles, ou comm'un moteur fonctionnant avec des fluides compressibles ou non compressibles.
EP92112084A 1992-07-15 1992-07-15 Machine rotative avec profiles conjugués en contact continu Expired - Lifetime EP0578853B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP92112084A EP0578853B1 (fr) 1992-07-15 1992-07-15 Machine rotative avec profiles conjugués en contact continu
DE59207259T DE59207259D1 (de) 1992-07-15 1992-07-15 Umlaufmaschine mit conjugierten Profilen in kontinuierlicher Berührung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92112084A EP0578853B1 (fr) 1992-07-15 1992-07-15 Machine rotative avec profiles conjugués en contact continu

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EP0578853A1 EP0578853A1 (fr) 1994-01-19
EP0578853B1 true EP0578853B1 (fr) 1996-09-25

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DE (1) DE59207259D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536830A (zh) * 2012-02-15 2012-07-04 刘晋浩 自共轭转子

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996016251A1 (fr) * 1994-11-21 1996-05-30 Kaloc, Milan Moteur volumetrique, notamment moteur a explosion a pistons rotatifs et a periode de detente prolongee
DE19819538C2 (de) * 1998-04-30 2000-02-17 Rietschle Werner Gmbh & Co Kg Druck-Saug-Pumpe
DE102019200028A1 (de) * 2019-01-03 2020-07-09 Gardner Denver Schopfheim Gmbh Drehkolbenmaschine
CN111350664B (zh) * 2020-02-18 2022-02-18 宁波鲍斯能源装备股份有限公司 一种螺杆转子组及具有该螺杆转子组的氢循环泵
CN111350665B (zh) * 2020-02-25 2022-02-18 宁波鲍斯能源装备股份有限公司 螺杆转子组及具有该螺杆转子组的氢循环泵

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456352A1 (fr) * 1990-05-05 1991-11-13 Drum International Limited Machine rotatif à déplacement positif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE677150C (de) * 1933-08-25 1939-06-20 Northey Rotary Engines Ltd Drehkolbenpumpe mit zwei in einem Gehaeuse umlaufenden Laeufern, die je einen fluegelartigen Drehkolben und eine den Kolben entsprechende Aussparung aufweisen
GB1328847A (en) * 1970-10-05 1973-09-05 Atlas Copco Ab Compressor units comprising rotary positive displacement com pressors
DE2062007A1 (de) * 1970-12-16 1972-07-06 Krüger, Winfried; Krüger, Peter; 4300 Essen Drehkolbengerät
DE3312117A1 (de) * 1983-04-02 1984-10-04 Leybold-Heraeus GmbH, 5000 Köln Zweiwellen-vakuumpumpe mit innerer verdichtung
FR2593857B1 (fr) * 1986-01-31 1988-06-24 Luere Dominique Pompe contrarotative de conception simple, a debit et pression eleves ne comportant ni frottements ni mouvements alternatifs, a tout moment reversible par simple inversion du sens de rotation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456352A1 (fr) * 1990-05-05 1991-11-13 Drum International Limited Machine rotatif à déplacement positif

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536830A (zh) * 2012-02-15 2012-07-04 刘晋浩 自共轭转子
CN102536830B (zh) * 2012-02-15 2015-01-21 刘晋浩 自共轭转子

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EP0578853A1 (fr) 1994-01-19
DE59207259D1 (de) 1996-10-31

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