EP1333453A2 - Drehmagnet - Google Patents
Drehmagnet Download PDFInfo
- Publication number
- EP1333453A2 EP1333453A2 EP03001580A EP03001580A EP1333453A2 EP 1333453 A2 EP1333453 A2 EP 1333453A2 EP 03001580 A EP03001580 A EP 03001580A EP 03001580 A EP03001580 A EP 03001580A EP 1333453 A2 EP1333453 A2 EP 1333453A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- contour
- pole shoe
- rotary magnet
- magnet according
- 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.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/14—Pivoting armatures
- H01F7/145—Rotary electromagnets with variable gap
Definitions
- the invention is based on a rotary magnet, in particular for rotary actuating sealing elements in flow valves, according to the preamble of Claim 1.
- a known rotary magnet of this type is used, for example, in one Rotary armature relay or Z armature relay as drive element for the switching contact used (Philippow, Volume 5, page 862, Plate 4.6, VEB Verlagtechnik, Berlin 1980).
- the contours of the pole shoe surfaces of the two pole shoes and the The outer contours of the two anchor legs have the shape of Arc sections and thus have a constant curvature.
- On such a rotating magnet provides a sufficiently large torque and thus one sufficient adjustment force in a small range of rotation angles. For Adjustment movements over a larger range of rotation angles, e.g.
- this rotary magnet is less suitable, because with one such a rotation angle range very large air gaps occur between anchor yoke and thus the magnetic resistance to form the magnetic field is very high is.
- the magnetic force and the resulting torque Anchor movement is therefore relatively small.
- the rotary magnet according to the invention has the features of claim 1 on the other hand the advantage that the contour formation according to the invention on the yoke pole shoes and on the armature legs even at large angles of rotation the magnetic field can spread optimally over the air gap.
- Such Contour is created in a simple manner by a constantly changing curvature of the faces of pole shoes and anchor legs facing each other, whereby the curvature increases with increasing angle of rotation.
- the one at anchor Current supply to the magnetic field attacking magnetic forces are in everyone Point of the contour of the outer surface of the anchor leg perpendicular to one of the Contour point created tangent. These magnetic forces each have one the axis of rotation of the armature force component and a related thereto right-angled force component pointing in the direction of rotation of the armature.
- the contour of the Pole shoe surfaces and the contour of the outer surface of the armature legs have the shape of a Section of a spiral.
- these are the torque generating magnetic force components over the scope of the Anchor leg outer surfaces of the same size.
- the contour of the Pole shoe surfaces and the armature outer surfaces a section of a Involute on. Due to the greater curvature of an involute compared to one
- the spiral takes on the magnetic force components that contribute to the torque every point of the outer surface over the circumference of an anchor leg, so that overall greater torque is achieved.
- the axis of rotation of the Anchor and the centers of the contours of the pole piece surfaces and the contours the outer surface of the anchor leg is congruent.
- the center points of the contours are the pole shoe surfaces and the respectively assigned contour of the outer side of the armature legs about an eccentricity e with respect to the axis of rotation of the armature added.
- the lever arm becomes eccentricity of the contour centers with respect to the axis of rotation the magnetic force components acting on the outer contour of the armature perpendicular to those passing through the axis of rotation of the armature Magnetic force components extend, thus increasing the torque increased.
- the direction of rotation of the armature is the same contour section another, smaller section of the outer surface lying under the pole shoe surface upstream, along which the air gap between the outer surface and Pole shoe area is significantly reduced.
- This further section is preferably sawtooth-like with a steep tooth flank pointing to the contour-conforming section and formed with a continuously curved tooth back and is above the radial section of the same contour. The back of the tooth can be curved be carried out constantly or steadily increasing.
- the rotary magnet according to the invention is preferably used in water valves Cooling water circuit of an internal combustion engine used, the armature rigid is coupled to a rotatable sealing element of the water valve. Through the Flow control by means of a rotary drive Sealing element, the flow resistance is minimized, with the Rotational movement of the sealing element without implementation directly from the Rotational movement of the armature in the rotary magnet is derived.
- the rotating magnet shown schematically in Fig. 1 in perspective has a U-shaped yoke 11 made of ferromagnetic material, the so-called. Iron sheet package from a variety of the same sheet metal die cuts is composed. At the leg ends of the U-shaped yoke 11 is a Pair of identical, diametrically opposed pole pieces 12 formed, which receive a rotatably mounted armature 14 between them. On the yoke web connecting the legs of the yoke 11 is an excitation winding 13 applied.
- the roller-shaped anchor which is also composed of sheet metal die cuts 14 has two armature legs 141, 142 which are diametrically aligned with respect to one another are identical.
- An anchor leg 141 or 142 is one of the Assigned pole shoes 12.
- the contour 15 of the outer surfaces 14a Anchor legs 141, 142 and the contour 16 of the anchor legs 141, 142 leaving an air gap 17 opposite pole faces 121 are of the same design and have a constantly changing curvature starting from the end position of the armature 14 shown in FIG. 1 (angle of rotation equal Zero) increases with increasing angle of rotation.
- the center of curvature the contour 15 of the outer surface 14a of the armature leg 141 with the Center of curvature 18 of the contour 16 of the upper pole shoe surface 121 in FIG.
- Eccentricity e are offset with respect to the axis of rotation 20. This will the contours 16 of the pole shoe surfaces 121 and the contours 15 of the armature leg outer surfaces 14a shifted outwards, and by the resulting Enlargement of the lever arm when the anchor 14 engages, unchanged Magnetic force achieves a greater torque.
- the constantly changing curvature of the Contour 15 of the outer surfaces 14a of the armature legs 141, 142 and the contour 16 the pole shoe surfaces 121 of the pole shoes 12 are realized in that they are the same Sections of a spiral are executed.
- Fig. 2 and Fig. 3 it is shown how the magnetic forces generated by the magnetic field on the armature 14 through the spiral contour to be influenced.
- each in the individual contour points on anchor 14 attacking magnetic force 21, which is always at right angles on a contour point applied tangent is divided into its components 22 and 23, namely in one component 22 passing through the axis of rotation 20 and one perpendicular thereto standing component 22, the so-called normals, it can be seen that each Magnetic force component 23 with the contour radius of the armature 14 a torque generated while the magnetic force components 22 through the axis of rotation 20th go, cancel each other out.
- the armature 14 is still in its end position, in which he only with a de-energized excitation winding 13 here schematically shown return spring 10 held or returned to this becomes.
- return spring 10 By energizing the excitation winding 13, the above engage described magnetic forces on the armature 14 and rotate this in Fig. 2 and 3rd counterclockwise.
- the anchor 14 In Fig. 3 the anchor 14 is at its maximum Deflection represented by the magnetic field.
- the rotary magnet shown in FIGS. 4 and 5 is compared to that previously 1 - 3 modified rotary magnet in that the Contours 16 of the pole shoe surfaces 121 and the contours 15 of the outer surfaces 14a the armature legs 141, 142 each as the same sections of an involute are trained.
- the Contours 16 of the pole shoe surfaces 121 and the contours 15 of the outer surfaces 14a the armature legs 141, 142 each as the same sections of an involute are trained.
- the larger Change in curvature in the involute compared to the spiral leading to Torque at armature 14 contributing magnetic force components 23 larger and increase on each arm leg 141 in the direction of rotation 24.
- a Rotating magnets on yoke 11 are two pairs of pole shoes, each with two diametrals opposite pole shoes 12 'present, the pole shoes 12 'are offset from one another by the same angle.
- the armature 14 ' has an equal number of diametrical arm legs 141', 142 ', which are offset from one another by the same circumferential angle as that Pole shoes 12 '.
- One arm leg 141 'or 142' is one of the pole pieces 12 'assigned and points in the set by the return spring Basic position, as shown in Fig. 6, an effective area that is equal to Pole shoe surface 121 'of the associated pole shoe 12'.
- the rotary magnet shown in FIGS. 8 and 9 is compared to that of FIGS. 4 and 5 described rotary magnets only with regard to the design of the armature 14 modified.
- the outer surface 14a of the armature legs 141, 142 has one Larger section 14a ', the contour of the pole shoe surface 121 of the Pole shoes 12 and a section with the same contour in the direction of rotation 14a 'upstream, smaller further section 14a ".
- the further section 14a "of the outer surface 14a is sawtooth-like, with the steeper portion 14a 'pointing to the contour Tooth flank 32 and formed with a continuously curved tooth back 33 and stands radially over the contour-matched section 14a ', so that in the area of sawtooth-like section 14a "of the air gap 17 'is substantially smaller than that Air gap 17 over the contour-matched section 14a 'of the outer surface 14a.
- each sawtooth-like section 14a " out of the area of the associated pole piece 12, and it results in essentially the same relationships as to Fig. 2 and 3 and Fig. 4 and 5 have been described.
- Fig. 9 the rotary magnet is when it reaches another end rotational position (energized excitation winding 13) is shown.
- the force relationships correspond to those as described for FIGS. 3 and 4 are.
- it can also run as a section of a spiral.
- the contour of the curved Tooth back 33 can also be designed differently, e.g. B. with a constant curvature or with a continuously increasing curvature.
- each arm leg 141, 142 can also have several such sawtooth-like sections 14a " corresponding gradation can be provided on each arm leg 141, 142.
- valve body 26 is cylindrical Valve chamber 27 formed with an inlet port 28 and a Drain connector 29 is connected.
- One runs through the valve chamber 27 rotating shaft 31 coaxially through, on which a sealing element 30 rotatably is arranged.
- the sealing element 30 is opposite the inner wall of the cylinder Valve chamber 27 sealed with sealing lips 301.
- the shaft 31 is rotatably with the armature 14 of the rotary magnet, as shown in FIGS. 1-6, connected.
- the sealing element 30 By appropriate energization of the excitation winding 13, the sealing element 30 from its valve closed position into an open position opening the valve are transferred as shown in dashed lines in Fig. 7.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
- Fig. 1
- eine perspektivische Darstellung eines Drehmagneten,
- Fig. 2 und 3
- jeweils ausschnittweise eine Seitenansicht des Drehmagneten in Fig. 2 und 3 mit zwei unterschiedlichen Endlagen des Ankers,
- Fig. 4 und 5
- jeweils eine gleiche Darstellung wie in Fig. 2 und Fig. 3 eines gegenüber dem Drehmagneten in Fig. 1 modifizierten Drehmagneten,
- Fig. 6
- eine Ansicht eines Drehmagneten gemäß einem weiteren Ausführungsbeispiel,
- Fig. 7
- einen Längsschnitt eines von dem Drehmagneten betätigten Strömungventils,
- Fig. 8 und 9
- jeweils eine gleiche Darstellung wie in Fig. 4 und 5 eines weiteren Ausführungsbeispiels eines Drehmagneten mit einem gegenüber dem Drehmagneten in Fig. 4 und 5 modifizierten Anker.
Claims (14)
- Drehmagnet, insbesondere für rotatorisch zu betätigende Dichtelemente in Strömungsventilen, mit einem Joch (11) aus ferromagnetischem Material, mit mindestens einer vom Joch (11) aufgenommenen Erregerwicklung (13), mit mindestens einem Paar von am Joch (11) ausgebildeten, einander diametral gegenüberliegenden Polschuhen (12), deren einander zugekehrte Polschuhoberflächen (121) eine gleiche, gekrümmte Kontur (16) aufweisen, und mit einem zwischen den Polschuhen (12) drehbar angeordneten Anker (14), der mindestens ein Paar von zueinander diametral ausgerichteten Ankerschenkeln (141, 142) aufweist, deren Außenflächen (14a) eine zumindest abschnittweise gleiche Kontur (15) wie die Polschuhflächen (121) aufweisen und jeweils mit einem der Polschuhflächen (121) einen Luftspalt (17) begrenzen, gekennzeichnet durch eine solche Ausbildung der Konturen (15, 16) von Polschuhflächen (121) und zugeordneten Ankerschenkel-Außenflächen (14a), daß mit zunehmendem Drehwinkel des Ankers (14) sich die radiale Luftspaltbreite der Luftspalte (17) zwischen den Polschuhen (12) und den Ankerschenkeln (141, 142) reduziert.
- Drehmagnet nach Anspruch 1, dadurch gekennzeichnet, daß die Konturen (15, 16) der Polschuhflächen (121) und der Ankerschenkel-Außenflächen (14a) eine sich stetig ändernde Krümmung aufweisen, die über den Drehwinkelbereich des Ankers (14) zunimmt.
- Drehmagnet nach Anspruch 2, dadurch gekennzeichnet, daß die Kontur (15, 16) von Polschuhflächen (121) und Ankerschenkel-Außenflächen (14a) jeweils ein Abschnitt einer Spirale ist.
- Drehmagnet nach Anspruch 2, dadurch gekennzeichnet, daß die Kontur (15, 16) von Polschuhflächen (121) und Ankerschenkel-Außenflächen (14a) jeweils ein Abschnitt einer Evolvente ist.
- Drehmagnet nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß die Konturmittelpunkte (17, 18) der Konturen (15, 16) jeder Polschuhfläche (121) und der zugeordneten Ankerschenkel-Außenfläche (14a) kongruent sind.
- Drehmagnet nach Anspruch 5, dadurch gekennzeichnet, daß die Drehachse (20) des Ankers (14) und die kongruenten Konturmittelpunkte (17, 18) der Konturen (15, 16) der Polschuhflächen (121) und Ankerschenkel-Außenflächen (14a) deckungsgleich sind.
- Drehmagnet nach Anspruch 5, dadurch gekennzeichnet, daß die kongruenten Konturmittelpunkte (17, 18) der Konturen (15, 16) jeder Polschuhfläche (121) und der zugeordneten Ankerschenkel-Außenflächen (14a) eine Exzentrizität (e) gegenüber der Drehachse (20) des Ankers (14) aufweisen.
- Drehmagnet nach einem der Ansprüche 1 - 7, dadurch gekennzeichnet, daß am Anker (14) eine Rückstellfeder (10) angreift, die bei stromloser Erregerwicklung (13) den Anker (14) in einer Enddrehlage hält und diesen nach Auslenkung in die Endlage zurückführt.
- Drehmagnet nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß die Polschuhflächen (121) und Ankerschenkel-Außenflächen (14a) annähernd flächengleich ausgebildet sind.
- Drehmagnet nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, daß am Joch (11') mindestens zwei Polschuhpaare mit jeweils diametral einander gegenüberliegenden Polschuhen (12') vorhanden sind und daß der Anker (14') eine gleiche Anzahl von diametralen Ankerschenkeln (141', 142') aufweist, die um einen gleichen Winkel zueinander versetzt sind wie die Polschuhe (12').
- Drehmagnet nach einem der Ansprüche 1 - 10, dadurch gekennzeichnet, daß der mit der Polschuhfläche (121) konturengleiche Abschnitt der Außenfläche (14a) eines jeden Außenschenkel (141, 142) bei der mit stromloser Erregerwicklung (13) vom Anker (14) eingenommenen Enddrehlage sich über die volle Polschuhfläche (121) erstreckt.
- Drehmagnet nach einem der Ansprüche 1 - 10, dadurch gekennzeichnet, daß der mit der Polschuhfläche (121) konturengleiche Abschnitt (14a') der Außenfläche (14a) eines jeden Außenschenkels (141, 142) bei der mit stromloser Erregerwicklung (13) vom Anker (14) eingenommenen Enddrehlage sich über den größeren Teil der Polschuhfläche (121) erstreckt und daß in Drehrichtung des Ankers (14) dem konturengleichen Abschnitt (14a') mindestens ein weiterer Abschnitt (14a") der Außenfläche (14) vorgeordnet ist, in dem der Luftspalt (17') zwischen Außenfläche (14a) und Polschuhfläche (121) reduziert ist.
- Drehmagnet nach Anspruch 12, dadurch gekennzeichnet, daß der weitere Abschnitt (14a") der Außenfläche (14a) sägezahnartig mit zum konturengleichen Abschnitt (14a') weisender, steiler Zahnflanke (32) und mit stetig gekrümmtem Zahnrücken (33) über den konturengleichen Abschnitt (14a') radial vorsteht.
- Drehmagnet nach einem der Ansprüche 1 - 13, gekennzeichnet durch seine Verwendung in einem Wasserventil (25) im Kühlwasserkreislauf einer Brennkraftmaschine, indem der Anker (14) starr mit einem drehbaren Dichtelement (30) des Wasserventils (25) gekoppelt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10204460 | 2002-02-05 | ||
DE2002104460 DE10204460A1 (de) | 2002-02-05 | 2002-02-05 | Drehmagnet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1333453A2 true EP1333453A2 (de) | 2003-08-06 |
EP1333453A3 EP1333453A3 (de) | 2005-01-05 |
Family
ID=7713646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03001580A Withdrawn EP1333453A3 (de) | 2002-02-05 | 2003-01-24 | Drehmagnet |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1333453A3 (de) |
DE (1) | DE10204460A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111354597A (zh) * | 2018-12-20 | 2020-06-30 | Abb瑞士股份有限公司 | 用于中压断路器的致动器 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3638550A (en) * | 1966-12-30 | 1972-02-01 | John R Hereford | Rotary electromagnetic actuator |
GB1262855A (en) * | 1968-02-21 | 1972-02-09 | Smiths Industries Ltd | Improvements in or relating to rotary solenoids |
GB1422121A (en) * | 1972-01-15 | 1976-01-21 | Cav Ltd | Electromagnetic actuators |
US4428356A (en) * | 1982-05-14 | 1984-01-31 | Robert Bosch Gmbh | Device for controlling at least one throttle diameter in a control line |
US5927249A (en) * | 1996-12-13 | 1999-07-27 | U.S. Philips Corporation | Electromotive adjustment device |
-
2002
- 2002-02-05 DE DE2002104460 patent/DE10204460A1/de not_active Withdrawn
-
2003
- 2003-01-24 EP EP03001580A patent/EP1333453A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3638550A (en) * | 1966-12-30 | 1972-02-01 | John R Hereford | Rotary electromagnetic actuator |
GB1262855A (en) * | 1968-02-21 | 1972-02-09 | Smiths Industries Ltd | Improvements in or relating to rotary solenoids |
GB1422121A (en) * | 1972-01-15 | 1976-01-21 | Cav Ltd | Electromagnetic actuators |
US4428356A (en) * | 1982-05-14 | 1984-01-31 | Robert Bosch Gmbh | Device for controlling at least one throttle diameter in a control line |
US5927249A (en) * | 1996-12-13 | 1999-07-27 | U.S. Philips Corporation | Electromotive adjustment device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111354597A (zh) * | 2018-12-20 | 2020-06-30 | Abb瑞士股份有限公司 | 用于中压断路器的致动器 |
CN111354597B (zh) * | 2018-12-20 | 2022-03-15 | Abb瑞士股份有限公司 | 用于中压断路器的致动器 |
Also Published As
Publication number | Publication date |
---|---|
EP1333453A3 (de) | 2005-01-05 |
DE10204460A1 (de) | 2003-08-07 |
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