EP3245005A1

EP3245005A1 - Rotor of a dual centrifuge

Info

Publication number: EP3245005A1
Application number: EP15808121.6A
Authority: EP
Inventors: Klaus-Günter Eberle; Ulrich Massing; Jovan DOBOS; Vittorio ZIROLI
Original assignee: Andreas Hettich GmbH and Co KG
Current assignee: Andreas Hettich GmbH and Co KG
Priority date: 2015-01-16
Filing date: 2015-11-24
Publication date: 2017-11-22
Also published as: CN107206397B; US10322419B2; US20180036744A1; WO2016113023A1; JP2018501953A; CN107206397A; JP6924143B2; DE102015100613A1

Abstract

The invention relates to a rotor (10) of a dual centrifuge. The rotor can be rotated about a drive axis (A) in a centrifuge and comprises rotary units (26) that are arranged symmetrically to one another and have a bearing (32) and a rotary head (30) which is connected to the bearing and which is mounted in the bearing in a rotatable manner about a rotational axis (R1, R2). The rotary head (30) can be driven about the rotational axis (R1, R2) relative to the rotor by another rotary mechanism (46) of the centrifuge and has a rotary head receiving area (80) for at least one sample container or sample container receptacle (100, 110). The rotational axis (R1, R2) of the rotary head (30) is inclined relative to the drive axis (A) of the rotor, the rotary head receiving area (80) is designed to receive an elongated sample container receptacle (100, 110) or an elongated sample container, and the longitudinal axis of the sample container receptacle (100, 110) introduced into the rotary head receiving area (80) or the longitudinal axis of the sample container introduced into the rotary head receiving area (80) is oriented at an angle ranging between more than 0° and less than 90° relative to the rotational axis (R1, R2). At least one connection region (52) is provided to which at least one damping mass (54) can be attached in a releasable manner and in a rigid manner via a fixing element.

Description

Rotor of a dual centrifuge

The invention relates to a rotor of a dual centrifuge according to the preamble of

Claim 1 specified type.

From EP 2 263 654 A2 a method for the production of lipid-based nanoparticles as well as kits and accessories for the production of the lipid-based nanoparticles by homogenization in an asymmetric dual centrifuge is known. As can be seen from the document, better results are achieved if the longitudinal axis of a sample container in which the materials for producing the lipid-based nanoparticles are contained, arranged at an angle, preferably in the range of 70 ° to 110 ° to a rotational axis of a rotary unit is. Often, two or more rotary units are provided in the dual centrifuge to increase the number of sample containers and thus process more sample material simultaneously. The homogenization of materials, as well as the mixing or milling of samples in sample containers, whose longitudinal axis are preferably arranged at an angle of 70-110 ° to the axis of rotation of a rotary unit, based on the rapid

Movement of materials in the sample containers, depending on the position of the containers to the centrifugal force of the dual centrifuge. These rapid movements of material in the containers temporarily lead to an unequal loading of the dual centrifuge, and thus to imbalance.

The high number of revolutions required for many homogenizing, mixing or grinding processes then lead to correspondingly large mass imbalances. The orientation of the sample container can be a major cause of the formation of imbalances in the rotor. If the sample container has a longitudinal axis that is not concentric or aligned parallel with the axis of rotation of the rotary unit, there is a higher risk that imbalances in the rotor arise. On the other hand, an asynchronous arrangement of the sample containers in the individual rotary units enhances the

Effect of mass imbalances, as the mass movements in the sample containers may not be synchronous. These unbalances required for the process not only lead to noise and disturbing vibrations, but also promote premature wear of mechanical components, which negatively affects the safety of the centrifuge and causes unnecessary costs. In addition, the quality of the sample material to be produced suffers from imbalances that go beyond the necessary level. It is therefore necessary to reduce or compensate the necessary process imbalances to the required degree.

From EP 2 263 653 A2 and FR 2 955 042 A1 asymmetric centrifuges are known. Here, masses are inserted into the rotor to compensate for the asymmetric load. The subject of this application, however, is a symmetrical centrifuge and thus relates to another

Problem.

The object of the invention is to provide a rotor of a dual centrifuge while avoiding the disadvantages mentioned, in which although necessary for the process mass shifts and thus imbalances in the sample containers occur, but in which the imbalances of the complete rotor unit does not exceed the technically acceptable level ,

This object is achieved by the characterizing features of claim 1 in conjunction with its generic features.

The dependent claims form advantageous developments of the invention.

The invention is based on the knowledge, the total mass of the rotor by additional

To increase damping masses and / or align the sample container receptacle and thus the sample container to the rotor the same and to synchronize the movement of the at least two existing rotary units as optimally as possible.

Incidentally, these findings are valid not only in connection with the production of lipid-based nanoparticles, but generally applicable to rotors used in dual centrifuges. Examples of important processes include grinding samples or mixing samples. According to the invention, a rotor of a dual centrifuge, which is rotatable about a main axis in the centrifuge, at least two mutually symmetrically arranged rotating units, each having a bearing and a bearing connected to the bearing, in this about a rotation axis rotatably mounted rotary head. The rotary heads are relative to the rotor of another

Rotary mechanism of the centrifuge about the rotation axis drivable and has a rotary head receptacle for at least one sample container and / or at least one sample container receptacle. The axis of rotation of the rotary unit of the rotor is aligned obliquely to the drive axis of the rotor. The rotary head receptacle is designed to receive an elongated sample container receptacle and / or an elongate sample container. The longitudinal axis of the introduced into the rotary head receptacle sample receptacle or the longitudinal axis of the introduced into the rotary head receptacle

Sample container is aligned perpendicular to the axis of rotation of the rotary head or between greater than 0 ° to less than 90 ° to the axis of rotation. In this case, at least one connection region is provided on the rotor, to which optionally at least one damping mass can be detachably fixed and fixedly attached via a fixing device for operation. Thus, one or more suitable damping masses can be selected and applied as needed. This can reduce the impact of in-service imbalances of the entire dual centrifuge. This results in improved reliability and a longer life of the centrifuge.

According to an advantageous development of the invention, the main axis of the dual centrifuge and the axis of rotation of the rotary unit intersect and describe a plane in which the axis of rotation intersects the major axis at an angle which is greater than 0 ° and less than 90 °.

In one embodiment, in a rotor of a dual centrifuge, two identically designed rotating units are provided, which are aligned in the same direction to the main axis in a zero position. In this case, the rotary head recordings, preferably with the sample container receptacles and / or the

Sample containers, arranged in the rotating units in each case the same and the rotary units perform in operation with each other a synchronous movement. The drive axis - main axis - the centrifuge is the mirror axis of the rotary units. By the same arrangement of the rotary head recordings, in particular with the sample container receptacles and / or the sample containers, and the synchronous movements of the rotary units, the occurrence of imbalances in the entire centrifuge is counteracted. It is advantageous if also at least one connection region is provided on the rotor, on which optionally at least one damping mass is releasably and fixedly attached via a fixation for operation. It is favorable if at least one damping mass is arranged on the rotor in the connection region. This significantly reduces the impact of system imbalance on the overall system. If the damping mass of a connection region consists of several mass elements, the imbalance can be counteracted even more targeted. In other words, an optimum can be created between the highest possible damping mass to compensate for the imbalances and the total mass of the rotor, which in turn should not be too high because of the necessary rotor acceleration and the existing engine mount. For lower rotor weights, for example, the safety pot of the centrifuge can be made weaker.

According to one aspect of the invention, therefore, a set of differently heavy mass elements is provided from which, if necessary, a predetermined heavy damping mass is formed or more predetermined heavy, each same and / or unequal damping masses are formed. This allows a particularly accurate choice of the damping mass to a variety of different

Requirements such as the uneven loading of the centrifuge with samples or the

meet different sizes of moving through the rotary head receptacle with sample container receptacle and / or sample container mass. It is also possible, instead of compiling the damping mass of different mass elements as needed, to provide from the outset a set of different heavy and / or equally heavy damping masses. If necessary, a damping mass is introduced into the connection region or a plurality of damping masses in connection regions. Thus, the operator of the centrifuge of the respective application can quickly select the appropriate damping mass and attach.

In a further advantageous embodiment, at least one sample container receptacle or a sample container in the rotary head receptacle attachable, and the damping masses are dependent on a total mass of a sample container in the sample container recording sample loading and sample container recording or in dependence of a total mass of a sample container with sample loading and mass the turntable determines. This ensures an exact balance of the masses, which can cause an imbalance. The operation of the centrifuge becomes even quieter and safer. It is furthermore very favorable if the sum of the damping mass or damping masses attached to the rotor in a ratio of at least 0.5: 1, in particular from 1: 1 to

Total mass resulting from the mass of sample loads, the sample container, the

Sample container receptacles, the rotary head receptacle and the rotary unit composed, is or are. At these ratios, sufficient damping mass is available to effectively counteract imbalances that can not be completely compensated by synchronization of the sample container orientation, without, however, placing too great a load on the centrifuge.

In an advantageous embodiment of the invention, the further rotary mechanism is designed such that a relation to the motor shaft fixed first gear and a second rotary gear connected to the second gear is provided, wherein the motor shaft drives the rotor and by the rotational movement of the rotor relative to the fixed first gear second gear is in operative connection with the first gear, whereby the rotary head is moved. This design of the rotating mechanism ensures a particularly uniform drive of the individual rotary heads and thus a uniform rotation of the individual sample container.

According to one embodiment of the invention, it has proved to be advantageous if a plurality of rotary units are provided. In this case, if the transmission of the rotational movement from the first gear to a respective second gear and thus to the respective rotary head of the rotary unit is designed so that all rotary heads of the rotary units have a shape identical gear and therefore perform an equal angular movement, so is a synchronous movement of the rotary units guaranteed.

According to one aspect of the invention, the rotary heads and thus the rotary head recordings with the sample receptacles and / or the sample containers on a zero position relative to the rotor, in which points of intersection of the radial line perpendicular to the axis of rotation of the rotary units through the zero position with a radial line perpendicular to Form main axis of the rotor. The

Turret recordings and the sample container can only in one orientation in the

Turret holder can be used. All intersections lie on a circle around the

Major axis. By this arrangement, the synchronization of the rotary heads is made possible in a simple manner, since in addition to the actual rotational movement and the starting points of the rotational movement are fixed to each other. The turret receptacles and the sample containers with samples introduced indirectly or directly therein are preferably aligned identically in the zero positions of the turrets, all relative to the rotor. In particular, in each case a lid of the sample container is arranged radially outside relative to the rotor. This achieves a further improvement in the synchronization of the rotary heads.

When the sum of the teeth of the engaging second gears of the turrets is integer divisible by the number of teeth of the first gear, it is easier to maintain constant uniform angles between the turrets on the one hand and the rotor on the other hand.

Greater flexibility in the ratio between the main rotational speed of the dual centrifuge and the rotational speed of the rotary units is achieved when a transformer gear is interposed between the first gear and the second gear, the individual transformer gears being of identical shape. By replacing the respective Übertragerzahnrads conveniently a changed transmission ratio can be achieved.

In order to facilitate the manual adjustment of the dual centrifuge with respect to the positions of the rotary heads prior to commissioning, it is advantageous if the zero position of the rotary head is optically marked. This allows the user to see at first glance how the turrets need to be aligned in order to obtain a synchronous movement.

In an advantageous development of the invention, a first bore in the zero position is provided in each rotary head, which passes through the second gear and is aligned in the zero position with a corresponding second bore in a fixed relative to the rotor part. In this case, a pin in the zero position of the rotary unit in the first and second bore can be introduced, whereby the rotary unit is secured in the zero position against rotation from the zero position. Thus, the turrets are aligned even more accurately than is possible by mere optical control. Furthermore, no unwanted twisting when inserting the rotor in the centrifuge is possible. This increases the safety during the application.

In order to further simplify the alignment of the rotary units and to make operation safer, the pins associated with the holes may be connected together by a clamp so that the position of the pins ensures that the weight distribution of two rotary units is aligned symmetrically to each other. This allows the alignment of all turrets to be secured with a single handle.

In a further advantageous embodiment of the pin and / or the clip with a

Blocking device provided that prevents closing of a centrifuge lid in the assembled state of the pin or the clip. This can be z. B. on the use of extra long pins or over a particularly sweeping bracket. This prevents the centrifuge from being put into operation while the turrets are still secured in their respective zero position, causing damage to the device.

Alternatively, the bore and pin arrangement may be reversed such that the turret has a pin and the bracket has an associated bore.

The accuracy of the orientation of the turrets is significantly improved by the fact that the

Zero position has a maximum play of 2.5 ° in the direction of rotation.

According to one embodiment of the invention, the rotary heads are coupled to one another via a further rotary mechanism such that the angular position of the rotary heads of different rotary units is always fixed to one another. Thus, the risk of losing the synchronization of the movement of the turrets during operation of the centrifuge is significantly reduced.

Further advantages, features and possible applications of the present invention will become apparent from the following description in conjunction with the embodiments illustrated in the drawings.

In the description, the claims, and the drawing, the terms and associated reference numerals used in the list of reference numerals below are used. In the drawing: Fig. 1 is a perspective view of a rotor according to the invention; a plan view of the rotor shown in Figure 1;

Fig. 3 is a side sectional view of the rotor shown in Fig. 1; 4 shows a perspective view of an embodiment according to the invention of a rotary unit from below;

Fig. 4a is a view of a pin according to the invention;

Fig. 5 is a plan view of the rotary unit shown in Fig. 4;

Fig. 6 is a view of a clip according to the invention;

7 is a perspective view of an embodiment of the invention

Turret recording;

8a shows a perspective view of an embodiment according to the invention of a sample container receptacle which can be arranged in the rotary head receptacle shown in FIG

8b shows a perspective view of a further embodiment according to the invention of a sample container which can be arranged in the rotary head receptacle shown in FIG. Fig. 1 shows a perspective view of a rotor 10 according to the invention as part of a

symmetrical centrifuge with two rotating units 26 for use in a dual centrifuge, not shown in the figures. FIG. 2 shows a plan view and FIG. 3 shows a side sectional view of the rotor 10 shown in FIG. 1. The rotor 10 has a rotor head 12 with a rotationally symmetrical basic shape, which describes an envelope. The rotor head 12 is provided with a bottom 14 and a bottom 14

circumferential, upwardly extending wall 18 provided. A drive shaft A extends perpendicularly into the center 16 of the rotor head 12. A drive shaft, not shown in the figures, engages with its free end by a recess 20 provided in the bottom 14 with the drive axis A, the rotor head 12. Above the recess 20 is an integral with arranged the bottom 14 pick-up tube 22, the centering and vertical

Fixing the rotor head 12 on the drive shaft is used. The wall 18 has a vertical portion 18a and an obliquely downwards in the direction of the drive axle employed portion 18b. There are two relative to the drive axis A opposing recesses 24 are provided, which pass through the vertical portion 18a of the wall 18 and the inclined section 18b of the wall 18 partially. In the recesses 24 each of the rotary units 26 are introduced.

The rotary units 26 each have an axis of rotation R1, R2 and are through the

Recesses 24 aligned so that the axes of rotation R1 and R2 intersect the drive axis A above the rotor 10 at an acute angle. Furthermore, the free ends of the rotary units 26 facing away from the drive axis A, namely the housings 28 explained below, see FIG. 4, protrude beyond the envelope in the region of the inclined section 18b of the wall 18.

The rotary unit 26 in each case has a largely rotationally symmetrical outer contour and comprises a rotatably mounted rotary head 30, see FIG. 3, for mounting a rotary head receptacle 80 with inserted sample container receptacle 100, 110 for sample containers with samples to be centrifuged and a housing 28 into which a bearing 32 is introduced for the rotary head 30, in which in turn the rotary head 30 provided with a housing 28 on its side facing, the

For clarity, not shown, bearing shaft engages. The rotary head 30 has an outer wall 34 arranged concentrically with the axis of rotation R1, R2. The housing 28 is provided with a wall 38 arranged concentric with the axis of rotation R1, R2. In this case, the diameter of the rotary head 30 is greater than that of the housing 28, so that between the outer wall 34 of the rotary head 30 and the wall 38 of the housing 28, a shoulder 36 is formed, with which the rotary unit 26 partially in their assigned

Recess 24 engages, see Fig. 1st

The housing 28 is adapted in its dimensions to the respectively associated regions of the recesses 24. To produce the rotational strength between the housing 28 and rotor head 12 is in

Housing 28 is provided a parallel to the rotation axis R1, R2 formed groove and on

Rotor head 12 a projection associated with the groove. Groove and projection are not shown in the figures for reasons of clarity. Incidentally, the arrangement of groove and projection can also be reversed. Furthermore, it is conceivable to choose a polygonal design in place of the cylindrical design of the housing 28, so as to achieve a rotationally fixed introduction of a housing in a rotor head. According to FIG. 1, on the side remote from the housing 28, the rotary head 30 is furthermore closed by a closure cover 40 arranged concentrically with the axis of rotation R1, R2. Likewise concentric on the closure lid 40, a closure button 42 is provided which serves as a handle to unlock the closure cover 40 by a rotary movement and remove or put on the closure cover 40 and lock by a direction of unlocking opposite rotational movement.

On the outer wall 34 adjacent to the shoulder 36 circumferentially a projection 44 is provided, see, e.g. Fig. 4, which defines a non-rotatably connected to the outer wall 34 teeth 46 concentric with the axis of rotation R1, R2. To transmit the rotational movement of the rotary heads 30 about the axes of rotation R1, R2 of the rotary units 26 is below the rotor head 12 for the sake of clarity, not shown in the figures central gear, the non-rotatable relative to the rotatable rotor head 12, for example by a screw connection to one in the figures Motor housing, not shown, is connected. Between toothing 46 and central gear, a transformer gear can be provided to different

To achieve transfer ratios. Such a transmission of rotational movements is well known and already described in the prior art, so that it can be dispensed with further explanations thereto.

The ratio of main rotation (rotation of the rotor 10) to reverse rotation (rotation of the rotary head 30) is given by the transmission ratio between the gear 46 and the central gear, not shown, and optionally a further Übertragerzahnrad. at

Removed rotor head 12, the Übertragerzahnrad not shown, and the central gear are easily interchangeable. Therefore, the speed ratio can be easily changed by adjusting the unillustrated gear and the central gear in diameter.

At the remote from the turret 30 side of the housing 28 cooling fins 50 are introduced. The cooling fins 42 are aligned perpendicular to the direction of rotation of the rotor head 12.

The center 16 of the rotor head 12 facing side of the wall 18 is as

Connecting region 52 formed on the two, relative to the center 16 of the rotor head 12, opposing disc-shaped damping masses 54 are arranged. The Damping masses 54 are provided to reduce the effects of imbalances, which may particularly occur in the rotary units 26 during operation.

In Fig. 4, the rotary unit 26 shown in Figures 1 to 3 is shown with the cover cap 40 removed in a perspective view from below. By this view, the arrangement in particular of the projection 44 and the toothing 46 on the outer wall of the rotary head 30 and the cooling fins 50 on the side facing away from the rotary head 30 of the housing 28 is visible.

In Fig. 5, the rotary unit 26 shown in Fig. 4 is shown from above. A bottom 60, having a circular surface and a center 62, and an inner wall 58 concentric with the outer wall 34 of the turret 30 and disposed on the periphery of the bottom 60 define an upwardly open receiving area 56 for a following in FIG. 7 in the bottom 60 are provided on a running around the center 62 circle K2 ten evenly spaced holes for clarity, by means of which the

Turret 30 and the housing 28 are riveted together and form a structural unit.

On another, also around the center 62 extending, circle K2 eight evenly spaced recesses 66 are provided. The recesses 66 are used in the use of the rotary head receptacle 80, as shown for example in Fig. 7, the inclusion of wedges, pins or the like, which are used to guide and improve the safety of storage on the

Turret receptacle 80 are arranged. By a lateral guide, not shown here, which has a corresponding counter-guide on the outer wall, the rotary head receptacle 80 can be introduced only in one orientation in the rotary unit.

Further, adjacent to the inner wall 58, a bore 68 in the bottom 60 is provided. The bore 68 passes through, as also shown in FIG. 4, the bottom 60 completely and serves to receive a pin 70 shown in Fig. 4a. At the same time, the bore 68 marks a zero position N of the rotary unit 26, by means of which the rotary unit 26 so can align that it performs with other arranged in the rotor head 12 rotary units 26 performs a synchronous movement. Diametrically opposite to the bore 68 may be provided a further bore in order to maintain the symmetry and thus to avoid caused by the bore 68 imbalance. The pin 70 has at one end a spherical handle 71 and is dimensioned in its length so that it passes through the bore 68 and engages with its free end in a provided in the rotor head 12 bore, which is not shown for clarity, engages. As a result, the rotary unit 26 is set in the zero position N. In addition, the pin can be dimensioned so that closing of a lid of the centrifuge is prevented.

Fig. 6 shows a bracket 72, by means of which two rotating units 26 can be fixed simultaneously in their respective zero position N. At the two free ends of the bracket 72 each have a pin 74 is arranged. The two pins 74 have the same length as the pin 70 and are spaced apart by a resilient connection clip 76 and at such an angle to each other that they can be introduced simultaneously into two holes 68 of two rotary heads 30. The resilient design of the connection span 76 allows small

Corrections of the distance and angle of attack required during insertion and withdrawal of the pins 74.

Centered on the connecting clip 76, a spherical handle 78 is arranged. The handle 78, on the one hand, facilitates the operation of the clamp 72 and, on the other hand, is positioned in the inserted state of the clamp 72 so as to prevent a complete closing of a centrifuge lid.

FIG. 7 shows an embodiment of a rotary head receptacle 80, which is used for the secure storage of sample receptacles 100 and 110 in the exemplary embodiments shown in FIGS. 8 a and 8 b

Receiving portion 56 of the rotary head 30 can be inserted. The outer circumference of the rotary head receptacle 80 is adapted to the receiving area 56.

The rotary head receptacle 80 has a safety wall 82 and a bottom 84. By an inner contour 86 of the safety wall 82 and the bottom 84 an upwardly open cross-shaped receiving space 88 is limited. In this case, two rectangular legs 88a and 88b of the

Receiving space 88 arranged perpendicular to each other, wherein the bases of the first leg 86a and the second leg 86b are identical and correspond to the base surfaces of the sample container receptacle 100, 110 shown in Figures 8a and 8b.

The first leg 88a serves to receive the sample container receptacle 100. For this purpose, a recess 90 is provided in the safety wall 82 at both ends of the leg 88a, wherein the two Recesses 90 are arranged relative to the leg 88a diametrically opposite each other. The recesses 90 are used for the secure wedging of the sample container receptacle 100 with centrifuge tubes inserted into the rotary head receptacle 80, as will be explained in more detail with reference to FIG. 8a.

The second leg 88b serves to receive the sample container receptacle 110. For this purpose, a recess 92 and at the second end of the leg 88b, two recesses 94 are provided in the safety wall 82 at one end of the leg 88b. The recesses 92, 94 are used for secure wedging of the sample container receptacle 110 in the rotary head receptacle 80, as will be explained in more detail with reference to FIG. 8b.

FIG. 8 a shows a first sample container receptacle 100 according to the invention, which, as described in connection with FIG. 7, is designed to be received in the first leg 88 a of the rotary head receptacle 80.

The sample container receptacle 100 has on two end faces 102 each have a recess 104, in each of which a better overview because not shown centrifuge tube as

Sample container for vertical storage can be introduced. It uses both

End faces 102 a protruding from the respective recess 104 end of a

Centrifuge tube (cover side) in an associated recess 90 in the safety wall 82 a. As a result, the sample container receptacle 100 is wedged in the rotary head receptacle 80.

In Fig. 8b, a second sample container receptacle 110 is shown, which is designed to be received in the second leg 88b of the rotary head receptacle 80.

The sample container receptacle 110 has a view facing the observer in FIG. 8b

End face 112 a recess 114 and on a side facing away from the viewer end face 112, two recesses 114. In the recesses 114 can be introduced for a better overview, not shown for centrifuge tubes for vertical storage. Similar to the solution shown in FIG. 8 a, protruding end of a centrifuge tube also engages in an associated recess 92, 94 in the safety wall 82 on both end faces 112 of the respective recess 114. As a result, the sample container receptacle 110 is wedged in the rotary head receptacle 80. The rotary head receptacle 80 and the sample holder receptacles 100 and 110 were chosen as an example, as an array of elongated sample container receptacles with sample containers perpendicular to

Rotation axis R1, R2 of the rotary unit 26 carries a high risk that imbalances arise, and therefore an attachment of damping mass is particularly advantageous. However, there are countless other examples of different storage of sample container receptacles for sample containers conceivable, even the storage of the sample container directly in the rotary head recording.

LIST OF REFERENCE NUMBERS

rotor

rotor head

ground

center

wall

a vertical section

b obliquely employed section

recess

pickup tube

recess

rotary unit

casing

turret

camp

outer wall

paragraph

wall

cap

shutter button

head Start

gearing

cooling fins

connecting area

mass dampers

reception area 58 inner wall

60 floor

62 center point

64 holes

66 recesses

68 bore

70 pen

71 handle

72 clip

74 pens

76 connection clip

78 handle

80 rotary head holder

82 safety wall

84 ground

86 inner contour

88 recording room

88a first leg

88b second leg

90 recess

92 recess

94 recess

100 sample container receptacle

102 front side

104 recess

110 sample container receptacle

112 front side

114 recess

A drive axle

R1. R2 rotation axes

K1 circle line

K2 circle line

N zero position

Claims

Patent claims

A rotor (10) of a dual centrifuge, which is rotatable about a drive axis (A) in a centrifuge, with at least two mutually symmetrically arranged rotary units (26) each having a bearing (32) and one with the bearing (32) , in said about a rotational axis (R1, R2) rotatably mounted rotary head (30), wherein the rotary head (30) relative to the rotor of a further rotary mechanism (46) of the centrifuge to the

Rotation axis (R1, R2) is driven and a rotary head receptacle (80) for at least one sample container or at least one sample container receptacle (100, 110), the rotational axis (R1, R2) of the rotary head (30) to the drive axis (A) of the rotor obliquely aligned is the rotary head receptacle (80) for receiving an elongated

Sample container receptacle (100, 110) or an elongated sample container is formed, the longitudinal axis of the introduced into the rotary head receptacle (80)

Sample container receptacle (100, 110) or the longitudinal axis of the introduced into the rotary head receptacle (80) sample container perpendicular to the axis of rotation (R1, R2) of the rotary head (30) or between greater than 0 ° is oriented to less than 90 ° to the axis of rotation, characterized

in that at least one connecting region (52) is provided, on which optionally at least one damping mass (54) can be detachably fixed and can be fixedly attached via a fixation for the operation.

2. Rotor of a dual centrifuge according to the preamble of claim 1, characterized

characterized in that two identically formed rotary units (26) are provided, wherein the rotary units (26) are aligned in the same direction to the drive axis (A) in a zero position (N), the rotary head receivers (80) in the rotary unit (26) arranged and aligned the same and the rotary units (26) in operation with the rotary head receivers (80), the sample container receptacles (100, 110) and / or the sample containers perform a synchronous movement with each other, in particular also the characterizing part of Claim 1 is realized.

3. Rotor according to claim 1 or 2, characterized in that at least one

Damping mass (54) is arranged on the rotor in the connecting region (52).

4. Rotor according to claim 3, characterized in that the damping mass (54) of a connecting region (52) consists of several mass elements.

5. Rotor according to claim 3 or 4, characterized in that a set of different gravity mass elements is provided from which, if necessary, a predetermined heavy damping mass (54) is formed or more predetermined heavy, each same and / or unequal damping masses (54) become.

6. Rotor according to one of claims 3 to 5, characterized in that a set of

a damping mass (54) in the connecting region (52) or a connecting region (52) or a plurality of damping masses (54) are introduced into connecting regions (52), if necessary.

7. Rotor according to one of the preceding claims, characterized in that at least one sample container receptacle (100, 110) or a sample container in the rotary head receptacle (80) can be arranged, and in that the damping masses (54) in dependence

Total mass from a in the sample container receptacle (100, 110) introduced

Sample container with sample charge and sample container receptacle or depending on a total mass from a sample container with sample charge and the mass of

Turning unit (26) are determined.

8. Rotor according to claim 7, characterized in that the sum of the rotor

mounted damping mass (54) or damping masses (54) in a ratio of at least 0.5: 1, in particular 1: 1 to the total mass, which consists of the mass of sample loads, the sample container, the sample container receptacles (100, 110)

Turret receptacle (80) and the rotary unit (26) composed, is formed or are.

9. Rotor according to one of the preceding claims, characterized in that the further rotary mechanism (46) is designed such that a relation to a motor shaft fixed first gear and a rotary head (30) connected to the second gear (46) is provided, wherein the Motor shaft drives the rotor and drives the second gear (46), which is in operative connection with the first gear by the rotational movement of the rotor relative to the fixed first gear.

10. Rotor according to claim 9, characterized in that a plurality of rotary units (26)

are provided and that the transmission of the rotational movement of the first gear to a respective second gear (46) and thus to the respective rotary head (30) of the

Turning unit (26) is designed so that all turning heads (30) of the rotary units (26) have a gear identical in terms of the teeth and therefore a same

Perform angular movement.

11. Rotor according to claim 9 or 10, characterized in that the rotary heads (30) and thus the rotary head receivers (80) have a zero position (N) relative to the rotor, that points of intersection of the radial line perpendicular to the axis of rotation (R1, R2) the turrets (30) through the zero position (N) with a radial line perpendicular to the drive axis (A) of the rotor and that all intersections lie on a circle around the drive axis (A).

12. Rotor according to claim 11, characterized in that the rotary head receivers (80) and the indirectly or directly introduced therein sample container in the zero positions (N) of the rotary heads (30) are all aligned with respect to the rotor, in particular in each case a lid of the sample container is arranged radially outside relative to the rotor.

13. Rotor according to claim 9 to 12, characterized in that the sum of the teeth of the engaging second gears (46) of the rotary heads (30) is integer divisible by the number of teeth of the first gear.

14. Rotor according to one of claims 9 to 13, characterized in that between the first gear and the second gear (46) a transformer gear is interposed, wherein the Übertragerzahnräder are identical in shape.

15. Rotor according to one of claims 9 to 14, characterized in that the

Zero position (N) of the rotary head (30) is optically marked.

16. Rotor according to one of claims 9 to 15, characterized in that in each

A first bore (68) is provided in the zero position (N) which passes through the second gear and is in the zero position (N) aligned with a corresponding second bore in the rotor head, wherein a pin (70, 74) in the zero position (N) of the rotary unit (26) in the first (68) and second bore can be introduced, and thereby secures the rotary unit (26) in the zero position (N) before turning from the zero position (N).

17. Rotor according to claim 16, characterized in that the bores (68)

associated pins (74) via a connecting clip (76) to a clip (72) are interconnected so that the position of the pins (74) relative to each other the position of the holes (68) in which they are in the zero positions (N) the turrets (30) are relative to each other, corresponds.

18. Rotor according to claim 16 or 17, characterized in that the pin (70) and / or the clip (72) with a blocking device (78) are provided which in the assembled state of the pin (70) or the clip (72 ) prevents closing of a centrifuge lid.

19. Rotor according to one of claims 11 to 18, characterized in that the zero position has a clearance of a maximum of 2.5 ° in the direction of rotation.

20. Rotor according to one of the preceding claims, characterized in that the

Rotary heads (30) via a further rotary mechanism (46) are coupled together such that the angular position of the rotary heads (30) of different rotary units (26) is always fixed to each other.