WO2023179856A1 - Actionneur - Google Patents

Actionneur Download PDF

Info

Publication number
WO2023179856A1
WO2023179856A1 PCT/EP2022/057689 EP2022057689W WO2023179856A1 WO 2023179856 A1 WO2023179856 A1 WO 2023179856A1 EP 2022057689 W EP2022057689 W EP 2022057689W WO 2023179856 A1 WO2023179856 A1 WO 2023179856A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
stator
rotor
drive
drive motor
Prior art date
Application number
PCT/EP2022/057689
Other languages
German (de)
English (en)
Inventor
Werner Riester
Original Assignee
Riester Familien-Holding 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
Application filed by Riester Familien-Holding KG filed Critical Riester Familien-Holding KG
Priority to PCT/EP2022/057689 priority Critical patent/WO2023179856A1/fr
Publication of WO2023179856A1 publication Critical patent/WO2023179856A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K26/00—Machines adapted to function as torque motors, i.e. to exert a torque when stalled
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates

Definitions

  • the invention relates to an actuator with an output shaft which can be driven in rotation with the aid of an electric drive motor, the output shaft of the actuator being coupled to the drive shaft of an actuator and being coupled, the drive motor having a rotor and a stator, with a permanent magnet being formed , which is in operative connection with the rotor.
  • Such actuators which are also referred to as actuators in the relevant standard ISO DIS 5210 (E), are used in particular for automatic controls and regulations. These actuators are in drive connection with valves, taps, slides or similar actuators, which are provided, for example, as pipeline fittings for changing the mass flow. These actuators are used as control or regulating drives. While control drives, which work as the last link in a control chain, are essentially used for opening/closing the valves or the same actuators, the control drives integrated in a control loop are intended to transmit the control commands of a controller to the actuator in such a way that that the mass flow is regulated to a certain volume.
  • Such actuators regularly have a rapidly rotating electric motor as a drive motor, the rotational movements of which are reduced via at least one reduction gear, for example a planetary gear, in such a way that the speed is sufficiently reduced.
  • a worm shaft is then moved via another gear, which meshes with a worm wheel, which represents the output of the previously known actuator.
  • the electric drive motors of such actuators can be in drive connection with an intermediate planetary gear, which reduces the speed.
  • a worm shaft is then moved via another gear, which meshes with a worm wheel, which represents the output of the actuator.
  • a control unit is usually housed in the drive housing, which usually consists of several cast parts and houses the drive motor and the necessary gears. Since such actuators are used in ambient temperatures from -60 ° C to + 80 ° C, high demands must be placed on the temperature resistance of the control unit of such actuators. The previously known actuators are therefore regularly associated with a correspondingly high design and manufacturing effort.
  • the task is therefore to create an actuator of the type mentioned at the beginning, which can be produced cost-effectively with a comparatively low design and manufacturing effort and which can also be adapted to a wide variety of applications with comparatively little effort.
  • the task is solved by the features of the independent claim. Advantageous embodiments are described in the subclaims.
  • the invention proposes the features of claim 1.
  • the permanent magnet in an actuator of the type described above, in order to solve the stated problem, it is proposed that the permanent magnet is arranged in an adapter between the rotor and the stator. This means that the permanent magnet can be placed in the exact position and develop its full effect.
  • the adapter is formed from a laminated core.
  • the laminated core preferably has metal sheets that are aligned transversely to the output shaft. A simple and cost-effective design alternative can thus be provided.
  • the adapter can also be made from a solid metal material.
  • the adapter can also be made of a plastic.
  • the laminated core is formed as a stamping waste product of the stator (also made of sheet metal). This means that a waste product from stator production can be used, which reduces waste.
  • winding heads are arranged radially on the stator. A constructive alternative can thus be provided.
  • two contact surfaces between the stator and the adapter are the same size.
  • the permanent magnet which is arranged in the adapter, can therefore exert its full effectiveness on the stator.
  • the contact surfaces can, for example, have matching axial dimensions.
  • two flanges are formed, which clamp the stator between them.
  • one or more clamping screws preferably guided through a laminated core of the stator, can press the two flanges against each other. Increased mechanical stability of the arrangement can thus be achieved.
  • the rotor is mounted between the two flanges. Increased mechanical stability of the arrangement can thus be achieved.
  • the two flanges each carry a bearing for the motor or output shaft. This has the advantage of providing a design alternative.
  • the adapter is connected to the output shaft in a material-fitting, form-fitting and/or force-fitting manner. This means that alternative connection techniques between the adapter and the output shaft can be used, which can also make the construction of the components easier.
  • the drive motor of the actuator is a slow-running electric direct drive.
  • the actuator according to the invention which is an electric one
  • Actuator for an industrial valve for example one Control valve, which can be used, can have an electric drive motor, which is designed as a slow-running electric direct drive. Since the electric drive motor of the actuator according to the invention can be designed as a slow-running electric motor, this drive motor has a sufficiently high torque to carry out the required actuating movements. Since the drive motor can be designed as a direct drive, complex reduction gears that require maintenance can be dispensed with. Since such reduction gears can be dispensed with, lubrication of the gearbox associated with maintenance intervals is not necessary and wear on meshing gear parts is also avoided.
  • the direct drive can be designed as an external rotor, in which the internal stator is enclosed by the external moving rotor.
  • the drive motor is designed as an internal rotor. If the drive motor is designed as an internal rotor with an internal rotor and an external stator, the rotational movements of the rotor can be transmitted via the motor shaft carrying the rotor directly to the spindle or similar drive shaft of the control valve or similar actuator arranged coaxially therewith.
  • a so-called torque motor can preferably be provided as a slow-running electric direct drive.
  • the actuator and its drive motor are in drive connection directly and without the interposition of a gearbox with the drive shaft of the control valve or similar actuator.
  • the actuator and whose drive motor is also in drive connection with the interposition of a gearbox with the drive shaft of the control valve or similar actuator. Since there is no need for a gear in the actuator according to the invention, the actuator according to the invention is characterized by low maintenance and low wear. Since the actuator according to the invention does not require gear wheels that mesh with one another and in particular no self-locking gears, unfavorable heating of the actuator during its operation is avoided.
  • the motor shaft carrying the motor is designed either as a hollow shaft or as a solid shaft. While a solid shaft is characterized by high stability and load-bearing capacity, a motor shaft designed as a hollow shaft further benefits the low weight of the gearless actuator without any significant loss of stability.
  • the motor shaft carrying the rotor is in direct drive connection with the drive shaft of the control valve or similar actuator.
  • the drive shaft of the actuating valve is designed as an adjusting spindle. It is a particular advantage of the slow-running direct drive, which is designed in particular as a torque motor, that the torque of the drive motor is a function of the current and that its speed is a function of the voltage.
  • the control required for the drive motor can be designed to be comparatively simple and space-saving, so that a complex die-cast housing that also encloses the control unit can be dispensed with and the Control works without problems even in a wide temperature range.
  • the power consumed by the drive motor is preferably a function of the voltage and the current.
  • the torque of the drive motor is switched off after the power has been delivered, thereby adjusting/regulating the torque.
  • an actuator 1 is shown in a partial longitudinal section, which is intended as an electrical actuator for an industrial control valve.
  • the actuator 1 which is in driving connection with a valve, a tap, a slide or another actuator (not shown here) for changing the mass flow in the fluid line, has an electric drive motor 2, by means of which a motor or output shaft 3 of the Actuator 1 can be driven in rotation.
  • the drive motor 2 is designed as a so-called torque motor, which is a slow-running electric motor Direct drive is used. Since the electric drive motor 2 of the actuator 1 is designed as a slow-running electric motor, this drive motor 2 has a sufficiently high torque to carry out the required actuating movements. Since the drive motor 2 is designed as a gearless direct drive, complex reduction gears that require maintenance can be dispensed with.
  • the drive motor 2 of the actuator 1 can be designed as an external rotor, in which the internal stator is enclosed by the external moving rotor.
  • the drive motor 2 of the actuator 1 is designed as an internal rotor which has an internal rotor 4 and an external stator 5.
  • the rotational movements of the rotor 4 can be transmitted via the motor shaft 3, which serves as the output of the actuator 1, directly to a spindle or similar drive shaft of a control valve or similar actuator arranged coaxially therewith.
  • the motor shaft is designed as a solid shaft or - as here - as a hollow shaft.
  • the motor or output shaft 3 of the drive motor 2 carrying the rotor 4 is therefore in direct drive connection with the drive shaft of the actuator.
  • the torque motor 2 is a function of the current and its speed is a function of the voltage. Since the speed of the drive motor 2 can be changed via the voltage and its torque via the current, such a drive motor 2 designed as a torque motor can also do without a motor control.
  • the internal rotor 4 carries a plurality of permanent magnets 11 or one permanent magnet 11 on its outer circumference.
  • the at least one permanent magnet 11 is arranged in an adapter 12 between the rotor 4 and the stator 5.
  • the adapter 12 is formed from a laminated core 13.
  • the laminated core 13 preferably has metal sheets 14 which are aligned transversely to the output shaft 3 and are annular. The sheets 14 thus each form a stack arrangement.
  • the laminated core 13 is preferably formed as a stamping waste product of the stator 5, which can also be composed of metal sheets 14.
  • the adapter 12 can alternatively be made from a solid metal material or alternatively from another material, for example plastic.
  • the rotor 4 is surrounded by the stator 5, on both sides of which the winding heads 6 of the motor windings protrude.
  • the winding heads 6 are arranged axially on the stator 5.
  • Two contact surfaces 15, 16 between the stator 5 and the adapter 12 are the same size.
  • the permanent magnet 11, which is arranged in the adapter 12, can therefore deliver its full active power.
  • the adapter 12 is connected to the output shaft 3 in a material-fitting, form-fitting and/or force-fitting manner.
  • the stator 5 of the drive motor 2 is held between flanges 7, 8, which clamp the stator 5 between them.
  • the rotor 4 is mounted between the two flanges 7, 8.
  • the two flanges 7, 8 each carry a bearing for the motor or output shaft 3.
  • the flanges 7, 8 of the drive motor 2 surround the hollow shaft provided as a motor or output shaft 3 of the drive motor 2, on which the rotor 4 is arranged.
  • the motor shaft 3 of the drive motor 2 is rotatably mounted between the flanges 7, 8.
  • a housing 9, which may also be made of thin sheet metal, can be placed, which in its interior 22 contains further electrical components of the drive motor 2 and in particular accommodates the circuit board 10 of a control unit provided for the drive motor 2.
  • the rotor 4 forms a contact surface 15 to the stator 5 on the outside, and the stator 5 forms a contact surface 16 to the rotor 4 on the inside.
  • Both contact surfaces 15, 16 between the stator 5 and the adapter 12 are the same size - at least with regard to their respective axial lengths.
  • the two flanges 7, 8 clamp the stator 5 between them.
  • Clamping screws 19 are guided through the laminated core 13 of the stator 5. They press the two flanges 7, 8 against each other and thus also press the sheets 14 of the stator 5 together.
  • the rotor 4 is mounted between the two flanges 7, 8.
  • the two flanges 7, 8 each have a bearing 21 which receives and supports the motor or output shaft 3.
  • the adapter 12 is connected to the output shaft 3 in a material-locking manner, for example by welding, and/or in a form-fitting manner, for example via a feather key 18, and/or in a force-fitting manner, for example by shrink-fitting and/or via a press fit.
  • a mechanical interface 19, here with at least one blind hole, on the flange 8 is used to attach the actuator 1 to a fixed point.
  • a mechanical interface 20, here with at least one blind hole, on the flange 7 is used to fasten the circuit board If necessary, the output shaft 3 can alternatively or additionally be guided out of the flange 8.
  • a brake for example a centrifugal brake and/or a holding brake, which acts on the output shaft, can also be mounted at the interface 19.
  • the invention relates to an actuator 1 with an output shaft 3, which can be driven in rotation with the aid of an electric drive motor 2, the output shaft 3 of the actuator 1 being connected or coupled to a drive shaft of an actuator, in particular a control valve, the drive motor 2 having a rotor 4 and a stator 5 , with a permanent magnet 11 being formed, which is in operative connection with the rotor 4 .
  • the permanent magnet 11 is arranged in an adapter between the rotor 4 and the stator 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un actionneur (1) comprenant un arbre de sortie (3) qui peut être entraîné en rotation à l'aide d'un moteur d'entraînement électrique (2), l'arbre de sortie (3) de l'actionneur (1) étant relié ou pouvant être accouplé à un arbre d'entraînement d'un élément d'actionnement, en particulier d'une soupape d'actionnement, le moteur d'entraînement (2) présentant un rotor (4) et un stator (5), un aimant permanent (11) étant formé, lequel est relié de manière fonctionnelle au rotor (4). L'actionneur (1) selon l'invention est caractérisé en ce que l'aimant permanent (11) est disposé dans un adaptateur entre le rotor (4) et le stator (5).
PCT/EP2022/057689 2022-03-23 2022-03-23 Actionneur WO2023179856A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/057689 WO2023179856A1 (fr) 2022-03-23 2022-03-23 Actionneur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/057689 WO2023179856A1 (fr) 2022-03-23 2022-03-23 Actionneur

Publications (1)

Publication Number Publication Date
WO2023179856A1 true WO2023179856A1 (fr) 2023-09-28

Family

ID=81308014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/057689 WO2023179856A1 (fr) 2022-03-23 2022-03-23 Actionneur

Country Status (1)

Country Link
WO (1) WO2023179856A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375050A1 (fr) * 1988-12-23 1990-06-27 N.V. Airpax S.A. Dispositif comprenant un actionneur, son procédé d'utilisation dans le dispositif, et système de commande d'un courant de gaz ou de liquide comprenant le dispositif
US5083744A (en) * 1991-03-08 1992-01-28 Morotta Scientific Controls, Inc. Motor-operated valve
EP0650246A1 (fr) * 1992-07-09 1995-04-26 Seiko Epson Corporation Moteur sans balais
JP2000060176A (ja) * 1998-08-05 2000-02-25 Nippon Soken Inc ブラシレスモータ駆動装置及びブラシレスモータ
WO2019162955A1 (fr) * 2018-02-22 2019-08-29 Patel Harshit Moteur à couple sans engrenage à entraînement direct sans cadre
CN110581614A (zh) * 2019-08-19 2019-12-17 华中科技大学 一种伺服有限转角力矩电机
JP2020177938A (ja) * 2019-04-15 2020-10-29 株式会社テージーケー 制御弁、コイルユニットおよびその製造方法
DE102020104781A1 (de) * 2020-02-24 2021-08-26 Minebea Mitsumi Inc. Ventil-Antriebsvorrichtung und Ventileinrichtung zur Steuerung eines Fluidstroms

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375050A1 (fr) * 1988-12-23 1990-06-27 N.V. Airpax S.A. Dispositif comprenant un actionneur, son procédé d'utilisation dans le dispositif, et système de commande d'un courant de gaz ou de liquide comprenant le dispositif
US5083744A (en) * 1991-03-08 1992-01-28 Morotta Scientific Controls, Inc. Motor-operated valve
EP0650246A1 (fr) * 1992-07-09 1995-04-26 Seiko Epson Corporation Moteur sans balais
JP2000060176A (ja) * 1998-08-05 2000-02-25 Nippon Soken Inc ブラシレスモータ駆動装置及びブラシレスモータ
WO2019162955A1 (fr) * 2018-02-22 2019-08-29 Patel Harshit Moteur à couple sans engrenage à entraînement direct sans cadre
JP2020177938A (ja) * 2019-04-15 2020-10-29 株式会社テージーケー 制御弁、コイルユニットおよびその製造方法
CN110581614A (zh) * 2019-08-19 2019-12-17 华中科技大学 一种伺服有限转角力矩电机
DE102020104781A1 (de) * 2020-02-24 2021-08-26 Minebea Mitsumi Inc. Ventil-Antriebsvorrichtung und Ventileinrichtung zur Steuerung eines Fluidstroms

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