EP1812714B1 - Ensemble comprenant un ventilateur et une pompe - Google Patents

Ensemble comprenant un ventilateur et une pompe Download PDF

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Publication number
EP1812714B1
EP1812714B1 EP05783017A EP05783017A EP1812714B1 EP 1812714 B1 EP1812714 B1 EP 1812714B1 EP 05783017 A EP05783017 A EP 05783017A EP 05783017 A EP05783017 A EP 05783017A EP 1812714 B1 EP1812714 B1 EP 1812714B1
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EP
European Patent Office
Prior art keywords
arrangement according
rotor
stator
fan
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05783017A
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German (de)
English (en)
Other versions
EP1812714A1 (fr
Inventor
Günther Strasser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP1812714A1 publication Critical patent/EP1812714A1/fr
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Publication of EP1812714B1 publication Critical patent/EP1812714B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D31/00—Pumping liquids and elastic fluids at the same time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/0646—Details of the stator

Definitions

  • the invention relates to an arrangement with a fan, a pump, and a drive motor.
  • the document EP 1 191 197 discloses an arrangement with a fan and a fluid pump and with an electric drive motor.
  • this object is achieved by the subject matter of claim 1.
  • This achieves a space-saving arrangement, because the same stator drives both a permanent magnet outer rotor and a fan through this, as well as a permanent magnetic inner rotor, which in turn drives a pump.
  • stator has an additional function because it surrounds the inner rotor in the manner of a split pot.
  • a coreless winding means a large air gap, but in the largely homogeneous magnetic field between the outer rotor and inner rotor can produce a very constant torque with suitable energization, resulting in a smooth running of such an arrangement for Episode has.
  • the optimal form of the current depends on the type of magnetization of the outer and inner rotor.
  • Fig. 1 shows in the schematic representation of an arrangement 20 according to the invention.
  • the air gaps which should naturally be very small, are exaggerated for reasons of clarity. This illustration essentially serves to explain the mode of action. Pump and fan are only hinted at.
  • the assembly 20 has a motor 21 with a stator 22, which is preferably shown as an ironless winding 23 with a plastic part 24 which surrounds a permanent magnet inner rotor 26 in the manner of a split pot liquid-tight and is separated from it by an inner air gap 28.
  • the plastic part 24 forms part of the inner air gap 28, as well as the outer air gap 51 described below, since it is magnetically transparent. If the winding 23 is formed without iron, the entire gap between the inner rotor 26 and the outer rotor 48 magnetically represents a uniform air gap.
  • the inner rotor 26 drives a turbomachine 27, here an impeller 30.
  • Fig. 11 shows a typical impeller above, which is integrally formed with an inner rotor.
  • the rotor 26 and the impeller 30 are liquid-tightly enclosed on the left side of the plastic part 24 and on the right side of a pump cover 32, as in Fig. 11 , below, is exemplified.
  • a seal 34 of any kind is located between the plastic part 24 and the pump cover 32 is located in Fig. 1 a seal 34 of any kind. In practice, the parts 24 and 32 are glued or welded.
  • Fig. 1 In the pump cover 32 are at Fig. 1 an inlet 34 and an outlet 36 for the fluid to be pumped, eg oil in a motor vehicle, or cooling water, or a fluid in a medical device.
  • Rotor 26 and impeller 30 are shown in the illustration Fig. 1 mounted on the left in the plastic part 24 and on the right in the pump cover 32. Another type of storage is described below.
  • the plastic part 24 is attached via radially extending webs 38, of which only one is shown, to an air guide housing 40, within which In operation, turn fan blade 42 to move air through this fan housing. Shown is an axial fan, but in the same way a diagonal fan or a radial fan would be possible.
  • the fan blades 42 are attached to a permanent magnetic outer rotor 44, which is shown in longitudinal section and which is mounted on roller bearings 46, 48 on the plastic part 24.
  • a magnetic yoke in the form of a soft iron part 46 is fixed, which rotates a magnetic ring 48, which is preferably formed here four-pole, as well as the inner rotor 26th
  • a damping arrangement 50 On the radially inner side of the magnet ring 48 is a damping arrangement 50, e.g. in the form of a short-circuit cage or a thin-walled ring of copper sheet.
  • a damping arrangement 50 e.g. in the form of a short-circuit cage or a thin-walled ring of copper sheet.
  • Such attenuation is useful because usually one of the two rotors controls the rotating field of the winding 23 via Hall sensors, and because the other rotor then normally follows this rotating field as in a synchronous machine, but e.g. When starting any relative movement between the inner rotor 26 and the outer rotor 44 is attenuated. This prevents the rotors 26 and 44 from falling out of step during dynamic processes.
  • the damping arrangement 50 is separated from the stator 22 by the outer air gap 51.
  • a printed circuit board 52 is provided on which three Hall sensors 54 are provided in a winding with three phases, of which in Fig. 1 only one is shown, which is controlled by the magnetic ring 48 in this embodiment.
  • a printed circuit board 56 can be placed on the outside of the housing 40 and the rotor position is then calculated by an algorithm, eg an algorithm according to the EP 0 536 113 B1 the applicant.
  • a damping 50 proves to be expedient, and such may possibly also on the inner rotor 26, or on both rotor magnets 26, 48 are provided.
  • Fig. 2 shows a highly schematic and not to scale section through the arrangement of Fig. 1
  • Fig. 3 shows an example of the structure of a suitable three-phase winding 23.
  • the magnetic yoke 46 is shown, in which there is the rotor magnet 48 shown in quadrupole, whose four radially magnetized poles are indicated in the usual way with N and S.
  • the rotor magnet 48 is separated from the stator 22 by the outer air gap 51, and this in turn is separated from the four-pole inner rotor 26 by the inner air gap 28.
  • the stator 22 includes, as shown, twelve evenly distributed conductors 1 to 12, the connections in Fig. 3 are shown.
  • the illustrated winding 23 according to Fig. 3 is a four-pole, three-phase, "twelve-groove" winding without crimping. (If no stator iron is used, there are no grooves in the usual sense.) Of course, the use of soft ferromagnetic material in the stator 22 is not excluded.)
  • Fig. 3 shows the three phases U, V and W in a representation as if twelve evenly distributed grooves 1 to 12 were present.
  • the phase U has two terminals u1 and u2, the phase V has two terminals v1 and v2, and the phase W has two terminals w1 and w2.
  • the phase U is shown in black, the phase V dash-dotted and the phase W dashed.
  • the phase U goes from the terminal u1 to the groove 1, then to the groove 4, then to the groove 7 and to the groove 10, and from this to the terminal u2.
  • Phase V goes v1 to groove 3, then to grooves 6, 9 and 12, and from there to v2.
  • phase W goes from w1 to the groove 5, then to the grooves 8, 11 and 2, from there to w2.
  • the magnet 48 of the outer rotor 52 and the inner magnetic rotor 26 are magnetically coupled together as in FIG Fig. 2 schematically through the four flow lines 60, 62, 64, 66 is shown.
  • the pump rotor 26 and the fan rotor 52 together form a magnetic flux which is four-pole relative to the air gaps 28 and 51.
  • the two rotors 26 and 52 are positioned relative to each other as in a magnetic coupling, which in Fig. 2 is shown, wherein forms a substantially homogeneous magnetic flux in the air gaps.
  • the pump needs more torque than the fan, which is the case acts as if the rotor 26 braked so that he, based on Fig. 2 , runs slightly behind the outer rotor 52, ie, the magnetic boundaries are correspondingly shifted from each other, as is readily apparent to one skilled in the electrical engineering.
  • the possible relative rotation of the two rotors is damped by the damping ring 50 at the inner radius of the outer magnet ring 48. If a relative movement occurs between the inner rotor 26 and the outer rotor 52, a current load is induced in the damping ring 50, which counteracts a relative movement.
  • Fig. 4 shows a circuit for the power supply of the winding 13 with its three phases U, V, W. These are each with their inductive component, for. B. Lu, their resistance component, z. B. Ru and their induced voltage z. B. Uu, how to do that in a computer simulation. (The coupling inductances, which are also taken into consideration in a simulation, are not shown.) - Shown is a delta connection whose connection points are designated 65, 67 and 69.
  • a full bridge circuit 68 To power the winding 13 is a full bridge circuit 68, often referred to as an inverter. This receives its power from a DC voltage source 70, z. B. a vehicle battery or the power supply of a computer.
  • the DC voltage source 70 is connected to its negative pole to ground 71. Its positive pole feeds via a diode 72, which protects against false connection, a positive line 74, also called dc link.
  • a storage capacitor is disposed between the line 74 and ground 71, z. With 4,700 ⁇ F. It supplies the full bridge circuit with reactive power.
  • the full-bridge circuit 68 has three upper npn transistors 81, 82, 83 and three lower npn transistors 84, 85, 86, to each of which a freewheeling diode 81 'to 86' is connected in anti-parallel.
  • the collectors of the upper transistors 81, 82, 83 are connected to the positive line 74 connected.
  • the emitters of the lower transistors 84, 85, 86 are connected to a negative line 78, which is connected via a measuring resistor 80 to ground 71.
  • the measuring resistor 80 is part of a (not shown) current limit.
  • the emitter of the transistor 81 and the collector of the transistor 84 are connected to the terminal 65.
  • the emitter of the transistor 82 and the collector of the transistor 85 are connected to the terminal 67.
  • the emitter of the transistor 83 and the collector of the transistor 86 are connected to the terminal 69.
  • Fig. 2 shows an angle ⁇ , which has the value 0 in the illustrated position of the rotor poles relative to the stator 22 and increases clockwise upon rotation of the rotors.
  • Fig. 5 shows the values s1 to s6 for the different values of ⁇ .
  • the circuit leaves state 1 and goes to state STAT 2 when a transient state TRANS 1 is reached where ⁇ ⁇ 60 ° el.
  • the signals s1 to s6 for the various rotation angle ranges are in Fig. 5 specified.
  • a normal block commutation is preferably used, ie the currents are supplied in the form of current blocks in which the amplitude can be changed by means of a PWM control.
  • the angle ⁇ can be measured sensorless, cf. the mentioned European Patent 0 536113 B1 the applicant.
  • Fig. 6 and 7 show a first embodiment of a practical realization of an inventive arrangement. Same or equivalent parts as in the Fig. 1 to 5 are denoted by the same reference numerals, but with a trailing apostrophe, z. 52 instead of 52, and are not usually described again.
  • Fig. 6 left shows a liquid cooler 90, whose inlet is indicated at 92. (The drain is in Fig. 6 not shown.)
  • This cooler 90 has in the middle a recess 92 into which a bearing portion 94 of the assembly 20 'protrudes.
  • the fan blades 42 ' are configured to either blow air through the radiator 90, that is, from right to left, or to suck air from left to right through the radiator.
  • the bearing portion 94 serves to support an outer rotor 44 '.
  • the structure of the storage corresponds to the according Fig. 8 and 10 and is therefore described there.
  • a shaft 96 is mounted, with which a hub 98 via a Rotor bell 100 is connected.
  • This has, where it protrudes into the cooler 90, a smaller diameter, which expands over a portion 102 to a rotor bell 104 of larger diameter, in which a four-pole permanent magnet 106 is arranged, for which the rotor bell 104 serves as a magnetic yoke.
  • This permanent magnet 106 has on its radially inner side a copper layer 105 to allow an asynchronous start.
  • the rotor bell 104 is encapsulated with a plastic jacket 107, with which the wings 42 'are integrally formed.
  • the wings 42 have on their outer side air guide elements 108 which extend in the axial direction and reduce the air flow which flows through the gap 110 between a wing tip and the fan housing 112 from the pressure side of the fan to the suction side. This reduces the fan noise.
  • a sealed cavity 114 On the outer circumference of the fan housing 112 is a sealed cavity 114, in which a circuit board 116 is arranged, which serves to control the motor.
  • an ironless stator winding 118 Radially within the outer rotor 106 is an ironless stator winding 118, which is preferably designed as a three-phase winding for generating a rotating field, as in Fig. 1 described. This winding is supplied from the circuit board 116 with a three-phase current.
  • the circuit board 116 may be connected to a source of three-phase power or a DC power supply.
  • the stator winding 118 is located on the outside of a containment shell 120 provided with guide protrusions 122 for this purpose. These projections 122 serve to secure the winding 118 in the desired angular position on the split pot 120.
  • the containment shell 120 is implemented as a magnetically transparent part, preferably made of plastic.
  • a standing wave 126 Within the containment shell 120 is mounted in an axial projection 124, a standing wave 126, whose in Fig. 6 right end in an axial projection 128 of a pump cover 130 is guided, which is provided with an inlet port 132.
  • coolant flows through the connection 132 to a centrifugal pump 134.
  • the containment shell 120 expands on its in Fig. 6 right side via a radially extending portion 135 to a hollow cylindrical portion 136 of larger diameter, in which an impeller 138 rotates in operation.
  • This section 146 is connected to the fan housing 112 by three webs or spokes 137. These webs 137 extend transversely to an annular air passage 139.
  • This impeller 138 has a protruding left extension 140 of magnetizable material, eg. B. plastic with embedded Hartferriten, and this extension 140 is here four-pole magnetized (like the magnetic ring 106) and is located radially within the ironless winding 118, from which it is liquid-tightly separated by the containment shell 120.
  • the extension 140 is provided on its inside with two sintered bearings 142, 144, by means of which it is rotatably mounted on the shaft 126.
  • the axial extensions 124 and 128 form thrust bearings for the extension 140 and the impeller 138 integral therewith.
  • an outlet nozzle 146 extends approximately tangentially outwards. The direction of flow is indicated by an arrow 148.
  • stator winding 118 is energized by circuit board 116 to generate a rotating electromagnetic field. As in Fig. 2 described in detail, this rotating field drives both the outer rotor magnet 106 as well as the inner rotor magnet 140. Any relative movement of the rotor magnets 106, 140 is damped by the copper layer 105.
  • both the outer rotor magnet 106 with the fan blades 42 'and the inner rotor 140 with the impeller 138 are synchronously driven by the winding 118.
  • Fig. 8 shows a second embodiment of the invention. Like or similar parts will be denoted by the same reference numerals as in the preceding figures and will not be described again.
  • the bearing section 94 has a bearing tube 148, which is formed integrally with the containment shell 120 and has a cylindrical inner recess 150, cf. Fig. 10 ,
  • Fig. 10 shows in its upper part the corresponding bearing arrangement.
  • This has two rolling bearings 154, 156 whose inner rings on the shaft 96 are axially displaceable. Between the outer rings of the bearings 154, 156 is a spacer member 158, which is also axially displaceable on the shaft 96 and has a slightly smaller diameter than the cylindrical inner recess 150th
  • a hub 98 is fixed here, to which a rotor bell 100 'is attached.
  • This has here a continuous circular cylindrical portion 104 '(constant diameter), whose in Fig. 10 lower part serves as a magnetic return for the rotor magnet 106 of the outer motor.
  • the fan blades 42 "attached, which have the same shape as the wings 42' at Fig. 6 ,
  • the hub 98 has its in Fig. 10 lower side a recess 160, and between this and the inner ring of the upper roller bearing 154, a compression spring 162 is arranged.
  • the recess 160 is in Fig. 10 bounded on the outside by a downwardly projecting edge 164, which abuts against the outer ring of the upper roller bearing 154 when the spring 162 is compressed.
  • a snap ring 166 is fixed, and the inner ring of the lower roller bearing 156 is pressed by the spring 162 against this snap ring 166.
  • the bearing assembly 94 is pressed in the direction of arrow 168 in the recess 150 of the bearing tube 148.
  • the spring 162 is compressed, so that the edge 164 presses against the outer ring of the upper roller bearing 154, and this outer ring presses via the spacer 158 against the outer ring of the lower bearing 156, so that the entire bearing assembly 94 so far pressed into the bearing tube 148 until the outer ring of the lower roller bearing 156 abuts against a shoulder 170 (FIG. Fig. 10 ) of the inner recess 150 abuts.
  • the spring 162 relaxes and thereby displaces the shaft 96 so far up until the snap ring 166 abuts against the inner ring of the lower bearing 156, as the Fig. 6 . 8th and 10 demonstrate.
  • the assembly of the bearing assembly 94 is then completed, and it is not necessary to perform additional work inside the bearing tube 148.
  • the bearing tube 148 has a cylindrical outer side 174, and on this two printed circuit boards 176, 178 are attached, which carry the electronic components for the control of the currents in the ironless winding 118.
  • Hall sensors are arranged, which detect the position of the inner rotor 140 and serve to control the commutation of the ironless winding 118.
  • Fig. 11 shows below the pump cover 130 with its inlet nozzle 132 and the (provided with radial holes) part 128, in which the in Fig. 10 lower end of the shaft 126 is supported.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Claims (15)

  1. Ensemble comprenant un ventilateur (42 ; 42', 42") et une pompe à fluide (27 ; 134), et comprenant un moteur électrique d'entraînement (21 ; 106), lequel présente un stator (22) avec un enroulement statorique (23 ; 118) qui est conçu pour générer un champ tournant, caractérisé en ce qu'un rotor extérieur (48 ; 106) à aimant permanent pour entraîner le ventilateur (42 ; 42', 42") et un rotor intérieur (26 ; 140) à aimant permanent pour entraîner la pompe à fluide (27 ; 134) sont associés au stator (22), lesquels rotors sont tous deux en interaction avec le champ tournant du stator et entraînés par celui-ci en fonctionnement.
  2. Ensemble selon la revendication 1, dans lequel le rotor intérieur (26 ; 140) est séparé du stator (22) par une pièce magnétiquement transparente (24 ; 120) qui sépare le rotor intérieur (26 ; 140) du rotor extérieur (48 ; 106) de manière étanche aux liquides.
  3. Ensemble selon la revendication 1 ou 2, dans lequel l'enroulement statorique est réalisé sous forme d'enroulement sans fer (23 ; 118).
  4. Ensemble selon l'une des revendications précédentes, dans lequel le nombre de pôles du rotor extérieur (48 ; 106) coïncide avec le nombre de pôles du rotor intérieur (26 ; 140).
  5. Ensemble selon l'une des revendications précédentes, dans lequel à au moins un des rotors à aimant permanent est associé un élément d'amortissement (50 ; 105) qui permet une marche asynchrone de ce rotor.
  6. Ensemble selon la revendication 5, dans lequel l'élément d'amortissement est réalisé à la manière d'une cage d'écureuil ou de court-circuit (50 ; 105).
  7. Ensemble selon la revendication 6, dans lequel l'élément d'amortissement (50 ; 105) est réalisé à la manière d'un amortissement par courants de Foucault.
  8. Ensemble selon l'une des revendications précédentes, dans lequel le ventilateur présente des ailettes de ventilateur (421 ; 42") qui, en fonctionnement, tournent dans un boîtier de guidage d'air (40 ; 112 ; 112').
  9. Ensemble selon la revendication 8, dans lequel un passage de guidage d'air (139) est réalisé entre le boîtier de guidage d'air (40 ; 112 ; 112') et la pompe à fluide (27 ; 134).
  10. Ensemble selon la revendication 9, dans lequel le boîtier de guidage d'air (40 ; 112 ; 112') est relié à la pompe à fluide (27; 134) par au moins un élément de liaison mécanique (38 ; 137).
  11. Ensemble selon les revendications 9 et 10, dans lequel l'élément de liaison mécanique (38 ; 137) s'étend transversalement au passage de guidage d'air (139).
  12. Ensemble selon l'une des revendications 9 à 11, dans lequel l'élément de liaison mécanique (38 ; 137), le boîtier de guidage d'air (112 ; 112') et un élément (136) de la pompe à fluide (134) sont réalisés sous forme de pièce en matière plastique d'un seul tenant (fig. 10).
  13. Ensemble selon l'une des revendications précédentes, dans lequel la pompe à fluide est réalisée sous forme de pompe centrifuge (134).
  14. Ensemble selon la revendication 13, dans lequel la pompe centrifuge (134) présente une roue de pompe (138) qui est réalisée d'un seul tenant avec le rotor intérieur (26 ; 140) à aimant permanent.
  15. Ensemble selon la revendication 14, dans lequel le rotor intérieur (26 ; 140) est séparé du stator (22) par une boîte d'entrefer (24; 120) magnétiquement transparente qui est réalisée sous forme d'élément d'une pièce stationnaire (136) de la pompe centrifuge (134).
EP05783017A 2004-11-19 2005-09-06 Ensemble comprenant un ventilateur et une pompe Not-in-force EP1812714B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004018458 2004-11-19
PCT/EP2005/009543 WO2006056249A1 (fr) 2004-11-19 2005-09-06 Ensemble comprenant un ventilateur et une pompe

Publications (2)

Publication Number Publication Date
EP1812714A1 EP1812714A1 (fr) 2007-08-01
EP1812714B1 true EP1812714B1 (fr) 2008-03-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05783017A Not-in-force EP1812714B1 (fr) 2004-11-19 2005-09-06 Ensemble comprenant un ventilateur et une pompe

Country Status (5)

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US (1) US20090074594A1 (fr)
EP (1) EP1812714B1 (fr)
AT (1) ATE390562T1 (fr)
DE (1) DE502005003509D1 (fr)
WO (1) WO2006056249A1 (fr)

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US9968412B2 (en) 2016-08-16 2018-05-15 Ethicon Endo-Surgery, Llc Methods, systems, and devices for controlling a motor of a robotic surgical system
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WO2006056249A1 (fr) 2006-06-01
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DE502005003509D1 (de) 2008-05-08
US20090074594A1 (en) 2009-03-19

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