EP1351261A1 - Electroaimant à courant alternatif - Google Patents

Electroaimant à courant alternatif Download PDF

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Publication number
EP1351261A1
EP1351261A1 EP03003902A EP03003902A EP1351261A1 EP 1351261 A1 EP1351261 A1 EP 1351261A1 EP 03003902 A EP03003902 A EP 03003902A EP 03003902 A EP03003902 A EP 03003902A EP 1351261 A1 EP1351261 A1 EP 1351261A1
Authority
EP
European Patent Office
Prior art keywords
air gap
leg
magnetic core
central
arrangement 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Withdrawn
Application number
EP03003902A
Other languages
German (de)
English (en)
Inventor
Volker Lang
Rudolf Scholz
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP1351261A1 publication Critical patent/EP1351261A1/fr
Withdrawn legal-status Critical Current

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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
    • H01F7/10—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current
    • H01F7/12—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements
    • H01F7/1205—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements having short-circuited conductors
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1623—Armatures having T-form

Definitions

  • the invention relates to an AC electromagnet made of laminated magnetic parts for use in an electrical switching device or as an AC magnetic drive.
  • AC magnets with a U-shaped magnetic circuit have two pairs of pole faces and two working air gaps.
  • E-shaped Magnetic parts are two pairs of pole faces and two on the side legs Working air gap formed and on the middle leg a working air gap, the also acts as a residual air gap (EP 5734 A1) to stick the armature to prevent switching solenoids.
  • the force flow between the pairs of pole faces is due to the area of the air gaps forming femoral heads determined.
  • a change, especially enlargement the area is only possible with enlargement of the leg cross-sections, which in turn influences the installation volume of the drive coil.
  • the Opposites of the mentioned characteristics hinder an optimal design and the energetic design of such an AC magnet.
  • the invention is therefore based on the object of an improvement AC magnet arrangement to specify, either using the same material brings a reduction in the tightening power or while maintaining the Tightening power allows a reduction in the use of materials.
  • the middle leg working air gap is based on this requirement in such a way that the one facing the magnet armature entire surface of the central web lies in a plane that is not physical Has formings or elevations into the inner profile, whereby the insertion of the drive coil would be hindered.
  • the interior or Yoke profile is from the inner surfaces of the side legs of the magnetic core, the Inner surfaces of the femoral heads and the inner surface of the central web of the magnetic core educated.
  • the air gap in the middle leg acts as a residual air gap when the switching device is in the ON position.
  • Embodiments are proposed for this subject, which can be found in distinguish the formation and location of the areas of the air gap of the middle leg.
  • the areas of the air gap on the middle leg can be parallel to the axis of the middle web of the magnet armature or at an angle to the axis of the central web his.
  • a symmetrical wedge shape is preferably proposed.
  • the wedge shape the air gap is designed such that the wedge is perpendicular to the longitudinal axis of the Middle leg lies and is directed to the middle web.
  • the corresponding one The shape of the surfaces of the air gap on the central web is a wedge-shaped depression.
  • the yoke profile is preferably rectangular or square.
  • the surface of the central web facing the yoke profile is without elevations trained in the yoke profile.
  • the pole faces (of the working air space) between the magnetic core and the armature are flat ground.
  • the advantage of the arrangement according to the invention is essentially that the area of the pole face pairs due to the special design of the femoral heads is enlarged, even with a relatively small or comparatively unchanged Side leg section. This causes a reduction in the magnetic Resistance with open magnetic circuit (or with contactor position OFF). The starting power to be applied electrically by the transformer in this position is reduced. The mass of the cross leg closing the magnetic circuit and thus the moment of inertia of the movable magnet armature can be reduce or adjust kinetically with the contact device.
  • the magnetic parts are made (Yoke 10 and armature 60) of the magnet arrangement from punched sheet metal packages and have rectangular cross section.
  • the packages are riveted (rivet 80), but possibly also welded, which results in mechanical cohesion.
  • the fixed magnetic core 10 is arranged in a housing, not shown, which has two side legs 11 which are aligned parallel to one another and are connected to one another by a central web 12. At the ends of the Side legs 11 are leg heads 14 with enlarged pole faces 18 Formation of the working air gap, each carrying a short-circuit ring 42.
  • the leg heads 14 have a cross section of the side legs 11 significantly enlarged pole faces 18.
  • the femoral heads are defined to the Middle leg 66 of the magnet armature brought up, the distance from the middle leg is kept somewhat larger than the distance between the pole faces in the raised state. Both pole faces 18 lie in a spatial plane that is generated by face grinding.
  • the associated with the pole faces 18 of the side legs Pole surfaces 18 'on the magnet armature 60 are also ground flat.
  • the magnet armature 60 is T-shaped, with the transverse leg 62 of the Magnetic circuit of the magnet arrangement can be closed and its middle leg 66 is directed to the center of the central web 12 of the magnetic core.
  • the middle leg 66 is from comprises a drive coil with a bobbin and excitation winding (see Fig. 4).
  • the magnet arrangement is completed by a drive coil 330, which Space between the central web 12, side legs 11 and leg heads 14 almost completely occupies, and inside the anchor 60 towards the Middle web 12 of the magnetic core is moved.
  • the magnet armature has a corresponding one Stroke in the working air gap. An operative connection of the magnet armature with a Contact device of the switch or contactor is not shown.
  • the magnet arrangement is symmetrical to a perpendicular plane of symmetry M. educated.
  • That of the central web 12, side webs 11 and leg heads 14 of the magnetic core 10 spanned yoke profile (empty space) 300 is square or rectangular.
  • the cross section formed by the yoke profile allows unimpeded insertion and vertically securing the drive coil 30 including the bobbin to the plane of symmetry of the magnetic core.
  • the air gap on the inner leg is designed such that the magnet armature facing entire surface of the central web 12 lies in a plane that none Has elevations (physical shapes) into the yoke profile 300.
  • the two embodiments differ in the shape of the air gap 22, 22 '.
  • the yoke profile has the same free space like that of the first embodiment.
  • the effective cross section of the air gap on the inner thigh is enlarged by its angled shape.
  • the shape of the air gap 22 ' can be wedge-shaped or be triangular.
  • the tolerance of the guide elements in the housing and / or within the coil body 1 can be coarser than that of the variant Figure 2 be executed.
  • additional Measures e.g. additional plastic guides to comply with the necessary tight tolerance of the motion control.
  • Fig. 3 shows schematically the front view of FIG. 2 to illustrate the Inner profile 300 and hint the bobbin 330.
  • a particularly large area of the working air gap is the cross section of the Thigh heads 14 larger than the cross section of the side legs.
  • grooves are formed into which a short-circuit ring can be inserted.
  • FIG. 4 shows a magnet arrangement with essentially E-shaped magnet parts 60 'and 10'.
  • the lower body 10 ' can be used as a fixed magnetic core and the upper body 60 'can be understood as a movable anchor.
  • the air gap (at the same time remanent air gap for position ON of the switch) on the middle part of the E-shaped body is wedge-shaped, as is also the case in FIGS. 2 and 3 can be seen.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
EP03003902A 2002-04-05 2003-02-21 Electroaimant à courant alternatif Withdrawn EP1351261A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10214992A DE10214992A1 (de) 2002-04-05 2002-04-05 Wechselstrom-Elektromagnet
DE10214992 2002-04-05

Publications (1)

Publication Number Publication Date
EP1351261A1 true EP1351261A1 (fr) 2003-10-08

Family

ID=27816151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003902A Withdrawn EP1351261A1 (fr) 2002-04-05 2003-02-21 Electroaimant à courant alternatif

Country Status (3)

Country Link
US (1) US20030189473A1 (fr)
EP (1) EP1351261A1 (fr)
DE (1) DE10214992A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000271A1 (fr) * 2007-06-27 2008-12-31 Danfoss A/S Actionneur magnétique et vanne comprenant un tel actionneur

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10359640B3 (de) * 2003-12-18 2004-10-14 Moeller Gmbh Elektromagnetanordnung
DE102013007989A1 (de) * 2013-04-30 2014-10-30 Euchner Gmbh + Co. Kg Hubmagnet, insbesondere Zuhaltemagnet eines Sicherheitsschalters, und Sicherheitsschalter mit einem solchen Hubmagnet
DE102014206469A1 (de) 2014-04-03 2015-10-08 SUMIDA Components & Modules GmbH Drossel und drosselkern
EP3143631B1 (fr) * 2014-05-14 2018-05-09 ABB Schweiz AG Actionneur basé sur bobine de thomson
CN106449010A (zh) * 2016-08-31 2017-02-22 宝鸡众力通用电器股份有限公司 一种带手动控制及状态检测的电磁铁
CN108242348B (zh) * 2018-02-23 2024-10-11 首瑞（天津）电气设备有限公司 一种电磁铁
CN110911233B (zh) * 2018-09-17 2022-08-30 伊顿电气有限公司 一种直流磁系统及电力设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715199A (en) * 1952-01-23 1955-08-09 Etc Inc Solenoid
US2942164A (en) * 1955-05-11 1960-06-21 Louis H Frost Electromagnet construction
FR2485798A1 (fr) * 1980-06-27 1981-12-31 Telemecanique Electrique Actionneur electromagnetique

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1592884A (fr) * 1968-02-28 1970-05-19
JPS5014129Y1 (fr) * 1970-12-28 1975-05-01
US3735295A (en) * 1972-03-28 1973-05-22 Westinghouse Electric Corp Electric control devices with mechanical interlock
US4030056A (en) * 1975-11-19 1977-06-14 Cutler-Hammer, Inc. Core for an electromagnet having shading coils cast in situ
SE411272B (sv) * 1978-05-02 1979-12-10 Asea Ab Elektromagnetiskt manovrerad elkopplare
JPS58171805A (ja) * 1982-04-02 1983-10-08 Fuji Electric Co Ltd 交流電磁石
FR2605150B1 (fr) * 1986-10-09 1988-12-30 Telemecanique Electrique Appareil electro-magnetique de commutation ayant des interrupteurs interchangeables
US4739293A (en) * 1987-02-19 1988-04-19 Westinghouse Electric Corp. Electromagnetic contactor with reduced noise magnetic armature
US4899121A (en) * 1989-05-01 1990-02-06 Westinghouse Electric Corp. Alternating current electromagnet
US5239277A (en) * 1991-10-28 1993-08-24 Magnetic Technology, Incorporated Electromagnetic solenoid actuator
US5578979A (en) * 1993-01-06 1996-11-26 Eaton Corporation Electromagnetic apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715199A (en) * 1952-01-23 1955-08-09 Etc Inc Solenoid
US2942164A (en) * 1955-05-11 1960-06-21 Louis H Frost Electromagnet construction
FR2485798A1 (fr) * 1980-06-27 1981-12-31 Telemecanique Electrique Actionneur electromagnetique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000271A1 (fr) * 2007-06-27 2008-12-31 Danfoss A/S Actionneur magnétique et vanne comprenant un tel actionneur

Also Published As

Publication number Publication date
US20030189473A1 (en) 2003-10-09
DE10214992A1 (de) 2003-10-16

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