ROTARY MACHINE HAVING AN UNBALANCE DRIVE

Abstract

A rotary device with an unbalance drive, a carrier unit, which rotates around a first axis of rotation R1, which is rotatably mounted, at least two unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of first type, each around a corresponding unbalance axis (UA.sub.1; UA.sub.2; . . . UA.sub.x) running parallel to the first axis of rotation R1 and at a distance (d.sub.UA1; d.sub.UA2; . . . d.sub.UAx) and are arranged from the first axis of rotation R1 and an unbalance drive device, which is arranged stationary with respect to the carrier unit and at least for driving the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) and rotationally coupled with the unbalances (U.sub.1; U.sub.2; . . . U.sub.x).

Claims

1. A rotary machine comprising: an unbalance drive; a carrier unit, which is mounted rotatably about a first axis of rotation; a two or more unbalances of a first type, which are each mounted rotatably about a corresponding unbalance axis with respect to the carrier unit and can be moved with the about the first axis of rotation; wherein the unbalance axes are arranged running parallel to the first axis of rotation at a distance from the first axis of rotation; an unbalance drive device, which is arranged in a stationary manner with respect to the carrier unit and is coupled to the unbalances at least for the rotational drive of the unbalances.

2. The rotary machine of claim 1, wherein the unbalances of the first type can be driven at the same speed by means of the unbalance drive device.

3. The rotary machine of claim 1, wherein the unbalances of the first type can be driven in the same direction.

4. The rotary machine of claim 2, wherein the unbalances of the first type can be driven in the same direction.

5. The rotary machine of claim 4, wherein the unbalances of the first type can be driven synchronized with one another in such a way that unbalance centers of gravity simultaneously pass through an outermost and/or innermost position with respect to the first axis of rotation in a radial direction.

6. The rotary machine of claim 4, wherein all unbalances of the first type are arranged distributed in a circumferential direction and/or the radial direction with respect to the carrier unit in such a way that, viewed in a direction parallel to the axis of rotation, a common center of gravity of all unbalances lies on the axis of rotation.

7. The rotary machine of claim 4, wherein all unbalances of the first type perform paths of motion lying in planes, said planes lying at least in pairs or all in a common plane orthogonal to the axis of rotation.

8. The rotary machine of claim 4, wherein one or more unbalances of a second type are provided, which are phase-shifted with respect to the unbalances of the first type, further preferably in the same direction as the latter and further in particular with respect to each other and/or relative to the unbalances of the first type can be driven at the same speed.

9. The rotary machine of claim 4, wherein an at least one motor/generator unit is rotationally drivable and coupled to at least one of the unbalances of a first type.

10. The rotary machine of claim 9, wherein the unbalances of the second type are coupled to rotors of the at least one motor/generator unit in a rotationally fixed manner.

11. The rotary machine of claim 8, wherein the unbalances of the second type execute paths of motion which lie in one or more planes, the planes lying at least in pairs or all in a common plane orthogonal to the axis of rotation.

12. The rotary machine of claim 11, wherein a plane (E) and a plane (E′) are arranged spaced apart and parallel to each other.

13. The rotary machine of claim 8, wherein all unbalances of the first type and all unbalances of the second type are coupled via a synchronization gear.

14. The rotary machine of claim 13, wherein the synchronizing gear is a transmission or a belt transmission, or a synchronizing belt or a gear transmission.

15. The rotary machine of claim 4, wherein a rotor of a first generator is coupled in a rotationally fixed manner to the carrier unit and a stator of the first generator, which is coupled in a rotationally fixed manner to the axis of rotation, wherein the first generator is designed in the manner of an external rotor.

16. The rotary machine of claim 13, wherein for driving the synchronization gear, the unbalance drive device is coupled to the synchronization gear directly or by means of at least one intermediate gear.

17. The rotary machine of claim 8, wherein a phase offset between the unbalances of the first type and the unbalances of the second type is 25° to 55°, especially 35° to 45°, particularly preferably 45°.

18. The rotary machine of claim 4, wherein the unbalance drive device is a direct current motor, wherein an energy supply of the direct current motor is in the form of batteries and/or accumulators and connected to the carrier unit in a manner to be movable therewith.

19. The rotary machine of claim 9, wherein the at least one motor/generator unit is of an alternating current type.

20. The rotary machine of claim 9, wherein at least one control unit is provided which operates the at least one motor-generator unit (24) as a motor or as a generator as a function of a torque amount of the unbalances of the first type and/or as a function of a torque contribution of the unbalances of the second type.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0072] FIG. 1 is an exploded view of a preferred embodiment of the invention showing a rotor/carrier unit of the rotary machine.

[0073] FIG. 2 is a top view of a preferred embodiment of the invention showing a first bearing plate of the carrier unit of the rotary machine with mounted unbalances of the first type.

[0074] FIG. 3 is an exploded view of a preferred embodiment of the invention showing an unbalance of the first type.

[0075] FIG. 4 is a cross-sectional representation of a preferred embodiment of the invention showing the rotary machine in a schematic representation.

DETAILED DESCRIPTION

[0076] A rotary machine 1 according to the invention is shown in FIG. 4 in highly schematized cross-section. The rotary machine 1 has a carrier unit 2, which is rotatable about a fixed axis 3, which forms a rotation axis R1, in a circumferential direction U.

[0077] The carrier unit 2 forms a rotor 4 of the rotary machine 1. The carrier unit 2 is formed, for example, from a base plate 5, a first bearing plate 6 and a second bearing plate 7.

[0078] The base plate 5, the first bearing plate 6 and the second bearing plate 7 are described in more detail below with reference to FIG. 1 and FIG. 2.

[0079] The fixed axle 3 is, for example, fixedly arranged on a base part 8. The carrier unit 2 is rotatably mounted with respect to the fixed axis 3 by means of bearings 9. At a free end of the fixed axis 3, a stator 10 of a generator 11 is arranged stationary. The generator 11 has an external rotor 12, which rotates on the stator 10, so that the generator 11 is formed as an external rotor generator.

[0080] The base plate 5 has a shaft journal 13 extending towards the base part 8, which in the example according to FIG. 4 is coupled to a first external generator 15 via a first belt 14 and to a second external generator 17 via a second belt 16. Thus, a rotation of the rotor 4 or the carrier unit 2 can transmit a rotational motion to the external generators 15 or 17.

[0081] At least one of the external generators 15 and/or 17 can also be operated as a motor, and is thus capable of acting as a starter motor for the rotor 4 and/or the carrier unit 2 in a start-up phase of the rotary machine 1.

[0082] In the embodiment according to FIG. 4, an unbalance drive 20 is provided, which, viewed in a vertical direction V, is arranged between the base plate 5 and the first bearing plate 6. The unbalance drive 20 has unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of a first type and unbalances (U.sub.I; U.sub.II; . . . U.sub.y) of the second kind, which are shown only schematically in the illustration according to FIG. 4.

[0083] In detail, this unbalance drive 20 is described in more detail below with reference to FIG. 1 and FIG. 2.

[0084] In the example according to FIG. 4, the first bearing plate 6 is provided with energy supply devices 21 for supplying energy to at least one unbalance drive device 22.

[0085] The unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type are rotatably mounted about unbalance axes (UA.sub.1; UA.sub.2; . . . UA.sub.x) rotatably mounted. The unbalances (U.sub.I; U.sub.II; . . . U.sub.y) of the second type are mounted about unbalance axes (UA.sub.I; UA.sub.II; . . . UA.sub.y) mounted.

[0086] The support unit 2 may further comprise a control unit 23, which is provided for controlling the unbalance drive device 22 and/or at least the motor/generator unit 24 (cf. also FIG. 1). The unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type are provided in the embodiment according to FIG. 4 with the unbalance axes (UA.sub.I; UA.sub.II; . . . UA.sub.y), which are at the same time rotor axes of the at least one motor/generator unit 24, and are arranged out of phase with the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type. The unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type are in the embodiment according to FIG. 4 with their unbalance axis (UA.sub.1; UA.sub.2; . . . UA.sub.x) are directly connected to the unbalance drive unit. The unbalances are coupled to each other by a synchronization belt 25, which forms a synchronous gear.

[0087] Instead of the synchronizing belt 25 for forming the synchronous gear, a gear train can of course also be arranged.

[0088] The rotary machine 1 according to the invention as shown in FIG. 4 has, distributed in the circumferential direction U, a total of four unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type, which are arranged uniformly distributed over the circumference.

[0089] In the schematic representation according to FIG. 4, however, representative of the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type, only a single unbalance (U.sub.1; U.sub.2; . . . U.sub.x) of the first kind is shown.

[0090] The unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first kind are arranged with their unbalance axes (UA.sub.1; UA.sub.2; . . . UA.sub.x) arranged at a distance (d.sub.UA1; d.sub.UA2; . . . d.sub.UAx) from the rotational axis R1. The unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type all lie in a plane E, which in the embodiment example according to FIG. 4 is aligned perpendicular to the axis of rotation R1. The plane E is aligned perpendicular to the drawing plane in the representation according to FIG. 4.

[0091] The same applies to the unbalances UI; UII; . . . Uy of the second type. These rotate—as described above—about the unbalance axes (UA.sub.I; UA.sub.II; . . . UA.sub.y), which have a distance (d.sub.UA1; d.sub.UA2; . . . d.sub.UAx) from the axis of rotation R1. The unbalances (U.sub.I; U.sub.II; . . . U.sub.y) of the second type rotate in a plane E′, which is also aligned perpendicular to the axis of rotation R1.

[0092] The plane E′ is thus parallel to the plane E and can be arranged at the same level as or offset from the plane E in the vertical direction V.

[0093] In the following, the rotary machine 1 according to the invention will be explained in more detail with reference to FIG. 1 and FIG. 2. The embodiment according to FIG. 1 and FIG. 2 differs only insignificantly from the embodiment according to FIG. 4, in particular in that in the rotary machine 1 according to the invention according to FIG. 1 and FIG. 2 the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type, which in the specific case according to FIG. 2 are four unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type, are located between the first bearing plate 6 and the second bearing plate 7 and are mounted rotatably with respect to these bearing plates by means of rolling bearings 26 about the corresponding unbalance axes UA.sub.1; UA.sub.2; UA.sub.3; UA.sub.4.

[0094] The unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first kind are arranged uniformly in the circumferential direction U, in particular each offset by 90° at a distance d.sub.UA1; d.sub.UA2; d.sub.UA3 and d.sub.UA4 from the axis of rotation R1. The distances spacing dUA1; dUA2; dUA3 and dUA4 are the same for all unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type.

[0095] The unbalance drive device 22 is arranged in the radial direction R within the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first kind. Between the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first kind, a total of four motor/generator units 24 are provided circumferentially and equally spaced. Between each motor/generator unit 24 and an unbalance (U.sub.1; U.sub.2; . . . U.sub.x) of the first type, there is a slight inward offset in the circumferential direction radially relative to the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type. A deflection pulley 27 is arranged in each case.

[0096] The synchronization belt 25 wraps around all deflection pulleys 27, corresponding belt pulleys of the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type, as well as corresponding belt pulleys of the motor pulleys 27. Kind and corresponding belt pulleys of the motor/generator units 24. The unbalance drive unit 22 is driven by means of a drive belt 28, which functions as an intermediate belt transmission, to a pulley of a motor/generator unit 24 and is thus coupled via the synchronization belt 25 to all deflection pulleys 27, all belt wheels of the motor/generator units 24 and all belt wheels of the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type. Thus, by means of the unbalance drive device 22, the entire unbalance drive 20, which is formed by the unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first kind and, in particular, also the unbalances U.sub.I; U.sub.II; U.sub.III; U.sub.IV of the second kind, which are not shown in FIG. 2, is coupled.

[0097] In the embodiment according to FIG. 2, the unbalances U.sub.1; U.sub.II; U.sub.III; U.sub.IV of the second kind are located below the bearing plate 6 and are thus concealed in the representation according to FIG. 2. Only representative for the unbalances U.sub.1; U.sub.II; U.sub.III; U.sub.IV of the second type is an unbalance U.sub.I indicated in dashed (concealed) form. The unbalance U.sub.I is, for example, phase-shifted by 45° measured with respect to the radial direction R in a certain position of the unbalance drive 20.

[0098] To illustrate the arrangement of the components described above in the carrier unit 2, the latter is shown in FIG. 1 rectified in the vertical direction V as an exploded view. FIG. 1 shows almost all components of the carrier unit 2 . For example, the unbalances U.sub.I; U.sub.II; U.sub.III; U.sub.IV of the second type are not shown in the illustration according to FIG. 1, however.

[0099] The base plate 5, the first bearing plate 6 and the second bearing plate 7 are, for example, connected to one another by means of screws 29 and corresponding spacers 30.

[0100] In all other respects, the components as shown in FIG. 1 have already been described in connection with FIG. 2.

[0101] In the following, with reference to FIG. 3, an unbalance (U.sub.1; U.sub.2; . . . U.sub.x) of a first type will be explained in more detail by way of example. The unbalance (U.sub.1; U.sub.2; . . . U.sub.x) of the first type has an unbalance shaft 31, which can be rotated about the corresponding unbalance axis UA.sub.1; UA.sub.2; UA.sub.3; UA.sub.4. At the end of the unbalance shaft 31 sit the rolling bearings 26, which are mounted in the first bearing plate 6 and in the second bearing plate 7, respectively, as described above in the embodiment according to FIG. 1 and FIG. 2.

[0102] The unbalances (U.sub.1; U.sub.2; . . . U.sub.x) of the first type each have an unbalance arm 32 and an unbalance anchor 33. The unbalance armature 33 has a plurality of holes 34 through which bolts 35 are insertable. The bolts 35 penetrate the holes 34, whereby unbalance is created at the projecting ends of the bolts 35. ends of the bolts 35 can be attached unbalance weights 36 as required, whereby the resulting unbalanced mass can be increased or decreased.

[0103] Spacer rings 37 may also be disposed on the unbalance shaft 31 if structurally convenient.

[0104] In the embodiment according to FIG. 3, each shaft end of the unbalance shaft 31 carries a pulley 38, which in the embodiment according to FIG. 3 are designed as toothed belt pulleys.

[0105] As an alternative, it may of course be convenient to provide only one pulley 38 if this is sufficient for adequate coupling to the synchronizing belt 25 and no further coupling to belts needs to be made.

LIST OF NUMERICAL REFERENCES

[0106] 1—Rotary machine [0107] 2—carrier unit [0108] 3—Fixed axis [0109] 4—Rotor [0110] 5—ground plate (base plate) [0111] 6—first bearing plate [0112] 7—second bearing plate [0113] 8—bottom part (base plate) [0114] 9—bearings [0115] 10—stator [0116] 11—generator [0117] 12—Outer rotor [0118] 13—shaft journal [0119] 14—first belt [0120] 15—first external generator [0121] 16—second belt [0122] 17—second external generator [0123] 20—Unbalance drive [0124] 21—Power supply devices [0125] 22—Unbalance drive device/DC motor [0126] 23—control unit [0127] 24—Motor/generator unit [0128] 25—Synchronizing belt [0129] 26—Roller bearing [0130] 27—Idler pulley [0131] 28—Drive belt [0132] 29—Screws [0133] 30—Spacer [0134] 31—Unbalance shaft [0135] 32—Unbalance arm [0136] 33—Unbalance arm [0137] 34—Holes [0138] 35—Bolts [0139] 36—Unbalance weights [0140] 37—Spacer ring [0141] 38—Belt pulley [0142] U.sub.1; U.sub.2; . . . U.sub.x—Unbalances of the first type [0143] U.sub.I; U.sub.II; . . . U.sub.y—Unbalances of second type [0144] UA.sub.1; UA.sub.2; . . . UA.sub.x—Unbalance axes [0145] UA.sub.I; UA.sub.II; . . . UA.sub.y—Unbalance axes [0146] d.sub.UA1; d.sub.UA2; . . . d.sub.UAx—Distance [0147] US.sub.1; US.sub.2; . . . US.sub.x—Unbalance centers of gravity [0148] B.sub.U1; B.sub.U2, . . . B.sub.ux—Trajectories [0149] B.sub.UI; B.sub.UII; . . . B.sub.uy—Trajectories [0150] E—Plane [0151] E′—Plane [0152] E.sub.1; E.sub.2, . . . E.sub.x—Planes [0153] E.sub.l; E.sub.II; . . . E.sub.y—Planes [0154] R—Radial direction [0155] R1—Axis of rotation [0156] S—center of gravity [0157] U—circumferential direction [0158] V—Vertical direction