EP0488005B1 - Electromagnetic vibration generator - Google Patents
Electromagnetic vibration generator Download PDFInfo
- Publication number
- EP0488005B1 EP0488005B1 EP91119614A EP91119614A EP0488005B1 EP 0488005 B1 EP0488005 B1 EP 0488005B1 EP 91119614 A EP91119614 A EP 91119614A EP 91119614 A EP91119614 A EP 91119614A EP 0488005 B1 EP0488005 B1 EP 0488005B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air gap
- housing
- armature
- oscillator according
- pole
- 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.)
- Expired - Lifetime
Links
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 10
- 230000005284 excitation Effects 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
- B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
Definitions
- the invention relates to an electromagnetic vibration exciter with an electromagnet made of a U-shaped magnetic core with an excitation winding which is cast in a housing with casting resin, and an armature arranged at a distance as an air gap D in front of the pole faces of the magnetic core, the armature in the air gap D vibrates with an amplitude s relative to the pole faces.
- Such an electromagnetic vibration exciter is known from DE-PS 11 06 103 or from DE-GM 66 04 827.
- Such electromagnetic vibration exciters are used as so-called magnetic vibrators in a wide variety of embodiments for driving vibratory conveyor troughs for bulk goods and small parts and for driving screens, separators or metering devices.
- Electromagnetic vibration exciters represent a two-mass vibration system in which the magnet system and the armature vibrate in opposite directions to each other.
- the magnet system and the armature are usually coupled to one another via springs.
- the excitation of the vibration exciter is usually done with single or double mains frequency. However, deviations from these drive frequencies are also possible for special applications.
- the electromagnet was previously attached to a supporting part, for example a housing, with the aid of fastening lugs or bolts, for some time now the electromagnet, that is to say the U-shaped magnetic core with its excitation winding, has been closed in a housing with cast resin shed.
- the electromagnet and the armature oscillate in opposite directions to each other.
- the air gap D is to be dimensioned such that during operation, the armature oscillates within this air gap with an amplitude s that is smaller than the air gap. This is the only way to avoid that the electromagnet and the armature cannot knock together and thereby destroy the drive system.
- the air gap D is to be dimensioned so large that the electromagnet and the armature are prevented from slamming together
- the required inductive magnetizing current is smaller the smaller the air gap, which is due to the current load and the design of the power supply is to be aimed for.
- the idle air gap is therefore expediently dimensioned in such a way that both requirements, the avoidance of the oscillating components collapsing and the lowest possible power consumption of the power supply unit, are met.
- the electromagnetic vibration drives are operated with a regulated supply voltage in order to at least compensate for the changes in the useful weight.
- the components and materials of the magnet system change their volume or their geometry depending on the temperature.
- the cast resins used have a larger coefficient of expansion than steel or even the frequently used cast iron housing.
- the housing is attached to a support element via brackets, the temperature-related changes in the brackets or the support frame also being noticeable in a change in the air gap.
- the invention has for its object to provide a vibration exciter of the type mentioned, in which there is almost no temperature-related change in the width of the air gap.
- the magnet system 1 consists of an electromagnet and an armature 2.
- the electromagnet has a U-shaped magnetic core 3, which is provided with an excitation winding 4.
- the magnetic core 3 and the excitation winding 4 are connected to the housing 6 via the casting resin 5.
- the housing 6 is usually made of gray cast iron.
- the armature 2 is located opposite the pole faces 7 of the magnetic core at a predetermined distance, which in the idle state is referred to as the idle air gap or generally as the air gap D.
- the armature vibrates in a parallel orientation perpendicular to the pole faces with an amplitude s which is not shown in the figure.
- the housing 6 of the electromagnet is attached to a support frame, not shown, via brackets 8, 8 '.
- the height of the housing, based on the pole faces 7, is assumed as the length H.
- the brackets 8 'shown in dashed lines are located at the end of the housing remote from the pole. The consequence of this is that when the temperature rises to the operating temperature of the vibration exciter, the housing expands by the value ⁇ H. The air gap D at operating temperature is reduced by this value.
- the air gap would have to be increased in accordance with the change in length ⁇ H.
- the influence of the housing expansion on the air gap can be avoided in that the bracket 8 according to the invention is attached to a neutral point on the housing. H. as close as possible to the poles of the magnetic core. Then an increase in the housing height H does not affect the air gap.
- the magnetic core is connected to the housing by means of a rigid strut.
- the press plates 9 which press the sheets of the core yoke together, are firmly connected to the housing by means of a screw connection 10. This also prevents the magnetic core from lifting out of the housing 6 in the event of thermal expansion, in particular of the casting resin.
- claw-shaped projections 11 are provided on the inside of the housing 6, which ensure clawing between the casting resin and the housing and thus largely prevent the poles from lifting off.
- the temperature-related reduction in the air gap width can, in principle, also be avoided by a different type of measure, or even further reduced together with one or more of the aforementioned measures.
- expansion elements 12 are provided, which are provided in the fastening of the magnet system via plate springs 14. These expansion elements can be dimensioned such that a temperature-related change in the air gap by - ⁇ D is compensated for by the corresponding amount + ⁇ D.
- the expansion elements 12 can be cuboid or cylindrical. They have not shown recesses for screws 15, which are used in connection with nuts 16 for fastening the housing 6.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Jigging Conveyors (AREA)
Abstract
Description
Die Erfindung betrifft einen elektromagnetischen Schwingungserreger mit einem Elektromagneten aus einem U-förmigen Magnetkern mit einer Erregerwicklung, die in einem Gehäuse mit Giessharz vergossen ist, und einem mit Abstand als Luftspalt D vor den Polflächen des Magnetkerns angeordneten Anker, wobei der Anker in dem Luftspalt D mit einer Amplitude s relativ zu den Polflächen schwingt.The invention relates to an electromagnetic vibration exciter with an electromagnet made of a U-shaped magnetic core with an excitation winding which is cast in a housing with casting resin, and an armature arranged at a distance as an air gap D in front of the pole faces of the magnetic core, the armature in the air gap D vibrates with an amplitude s relative to the pole faces.
Ein derartiger elektromagnetischer Schwingungserreger ist aus der DE-PS 11 06 103 oder aus dem DE-GM 66 04 827 bekannt. Derartige elektromagnetische Schwingungserreger werden als sogenannte Magnetvibratoren in unterschiedlichster Ausführungsform zum Antrieb von Schwingförderrinnen für Schüttgüter und Kleinteile sowie den Antrieb von Sieben, Separatoren oder Zuteileinrichtungen eingesetzt.Such an electromagnetic vibration exciter is known from DE-PS 11 06 103 or from DE-GM 66 04 827. Such electromagnetic vibration exciters are used as so-called magnetic vibrators in a wide variety of embodiments for driving vibratory conveyor troughs for bulk goods and small parts and for driving screens, separators or metering devices.
Elektromagnetische Schwingungserreger stellen ein Zweimassen-Schwingungssystem dar, bei dem das Magnetsystem und der Anker gegenläufig zueinander schwingen. Das Magnetsystem und der Anker sind in der Regel über Federn miteinander gekoppelt. Die Anregung des Schwingungserregers erfolgt in der Regel mit einfacher oder doppelter Netzfrequenz. Für Sonderanwendungen sind aber auch Abweichungen von diesen Antriebsfrequenzen möglich.Electromagnetic vibration exciters represent a two-mass vibration system in which the magnet system and the armature vibrate in opposite directions to each other. The magnet system and the armature are usually coupled to one another via springs. The excitation of the vibration exciter is usually done with single or double mains frequency. However, deviations from these drive frequencies are also possible for special applications.
Während früher der Elektromagnet mit Hilfe von Befestigungslaschen oder Bolzen an einem tragenden Teil, beispielsweise einem Gehäuse, befestigt wurde, ist man seit einiger Zeit dazu übergegangen, den Elektromagneten, d. h. also der U-förmige Magnetkern mit seiner Erregerwicklung, in einem Gehäuse mit Giessharz zu vergiessen.While the electromagnet was previously attached to a supporting part, for example a housing, with the aid of fastening lugs or bolts, for some time now the electromagnet, that is to say the U-shaped magnetic core with its excitation winding, has been closed in a housing with cast resin shed.
Auf diese Weise wird nicht nur die elektrische Isolation vergrössert und das Gewicht der Magnetseite verkleinert, sondern es lassen sich auch erhebliche Herstellungskosten einsparen.In this way, not only is the electrical insulation increased and the weight of the magnet side reduced, but also considerable manufacturing costs can be saved.
Wie bereits erwähnt, schwingen der Elektromagnet und der Anker gegenläufig zueinander. Im Ruhezustand nimmt der vor den beiden Polflächen des Magnetkerns angeordnete Anker einen bestimmten Abstand ein, der als Luftspalt D bezeichnet wird. Der Luftspalt D ist so zu bemessen, dass beim Arbeitsbetrieb der Anker innerhalb dieses Luftspalts mit einer Amplitude s schwingt, die kleiner als der Luftspalt ist. Nur dadurch lässt es sich vermeiden, dass der Elektromagnet und der Anker nicht zusammenschlagen können und dabei zu einer Zerstörung des Antriebssystems führen.As already mentioned, the electromagnet and the armature oscillate in opposite directions to each other. In the idle state, the armature arranged in front of the two pole faces of the magnetic core is at a certain distance, which is referred to as the air gap D. The air gap D is to be dimensioned such that during operation, the armature oscillates within this air gap with an amplitude s that is smaller than the air gap. This is the only way to avoid that the electromagnet and the armature cannot knock together and thereby destroy the drive system.
Während einerseits der Luftspalt D so gross zu bemessen ist, dass ein Zusammenschlagen des Elektromagneten und des Ankers mit Sicherheit vermieden wird, ist andererseits der erforderliche induktive Magnetisierungsstrom um so kleiner, je kleiner der Luftspalt ist, was von der Strombelastung her und der Auslegung des Netzgerätes anzustreben ist. Der Ruheluftspalt ist also zweckmässig so zu dimensionieren, dass beide Forderungen, das Vermeiden eines Zusammenschlagens der schwingenden Komponenten und eine möglichst geringe Leistungsaufnahme des Netzgerätes, erfüllt sind. Da sich ferner die Eigenfrequenz und damit die Schwingbreite noch in Abhängigkeit von dem Nutzgewicht, bei einem Fördergerät beispielsweise das Fördergut, ändert, werden die elektromagnetischen Schwingungsantriebe mit einer geregelten Speisespannung betrieben, um zumindest die Änderungen des Nutzgewichts auszugleichen.While on the one hand the air gap D is to be dimensioned so large that the electromagnet and the armature are prevented from slamming together, on the other hand the required inductive magnetizing current is smaller the smaller the air gap, which is due to the current load and the design of the power supply is to be aimed for. The idle air gap is therefore expediently dimensioned in such a way that both requirements, the avoidance of the oscillating components collapsing and the lowest possible power consumption of the power supply unit, are met. Furthermore, since the natural frequency and thus the vibration range still change as a function of the useful weight, for example the material to be conveyed in the case of a conveying device, the electromagnetic vibration drives are operated with a regulated supply voltage in order to at least compensate for the changes in the useful weight.
Ein anderes Problem besteht darin, dass die Komponenten und Werkstoffe des Magnetsystems ihr Volumen bzw. ihre Geometrie in Abhängigkeit von der Temperatur verändern. Beispielsweise haben die verwendeten Giessharze einen grösseren Ausdehnungskoeffizienten als Stahl oder gar das häufig verwendete Graugussgehäuse. Ferner ist zu berücksichtigen, dass das Gehäuse über Konsolen an einem Tragelement befestigt ist, wobei die temperaturbedingten Änderungen der Konsolen bzw. des Traggestelles sich auch in einer Änderung des Luftspaltes bemerkbar machen.Another problem is that the components and materials of the magnet system change their volume or their geometry depending on the temperature. For example, the cast resins used have a larger coefficient of expansion than steel or even the frequently used cast iron housing. It should also be taken into account that the housing is attached to a support element via brackets, the temperature-related changes in the brackets or the support frame also being noticeable in a change in the air gap.
Bei der Bemessung des Luftspaltes ist also die Wärmeausdehnung zu berücksichtigen, die bei der Betriebstemperatur des Gerätes auftritt, wodurch jedoch, wie bereits erwähnt, der induktive Belastungsstrom im kalten Zustand wiederum erhöht wird.When dimensioning the air gap, the thermal expansion that occurs at the operating temperature of the device must be taken into account, which, however, as already mentioned, increases the inductive load current when cold.
Der Erfindung liegt die Aufgabe zugrunde, einen Schwingungserreger der eingangs genannten Art verfügbar zu machen, bei dem nahezu keine temperaturbedingte Veränderung der Breite des Luftspaltes auftritt.The invention has for its object to provide a vibration exciter of the type mentioned, in which there is almost no temperature-related change in the width of the air gap.
Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die sich infolge Temperaturveränderung durch Wärmeausdehnung auf den Luftspalt D auswirkenden Konstruktionsteile des Schwingungserregers bezüglich ihrer konstruktiven Gestaltung und ihrer Anordnung und Befestigung in dem Gehäuse so ausgebildet sind, dass ihr Einfluss auf die Breite des Luftspaltes D gering ist.This object is achieved according to the invention in that the structural parts of the vibration exciter which act on the air gap D as a result of temperature change due to thermal expansion are designed with regard to their structural design and their arrangement and fastening in the housing such that their influence on the width of the air gap D is slight is.
Der besondere Vorteil ist darin zu sehen, dass von der Konstruktion und der Werkstoffauswahl her von vornherein ein Temperatureinfluss auf den Luftspalt weitgehend vermieden wird, so dass gegenüber den bekannten Schwingungserregern der Ruheluftspalt kleiner gewählt werden kann und in manchen Fällen auch ein weniger grosser Regelaufwand zum Betrieb des Schwingungserregers erforderlich ist.The particular advantage can be seen in the fact that, from the outset, the influence of temperature on the air gap is largely avoided from the design and the choice of material, so that compared to the known vibration exciters, the idle air gap can be selected to be smaller and in some cases less control effort for operation of the vibration exciter is required.
Das Wesen der Erfindung soll anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert werden.The essence of the invention will be explained in more detail with reference to an embodiment shown in the drawing.
Es zeigen
- Fig. 1
- einen Längsschnitt des Magnetsystems in schematischer Darstellung;
- Fig. 2
- einen Detailschnitt des Magnetsystems nach Fig. 1 und
- Fig. 3
- eine Ansicht eines Gehäuses des Magnetsystems ohne Anker von unten.
- Fig. 1
- a longitudinal section of the magnet system in a schematic representation;
- Fig. 2
- a detail section of the magnet system of FIG. 1 and
- Fig. 3
- a view of a housing of the magnet system without anchors from below.
Das Magnetsystem 1 besteht aus einem Elektromagneten und einem Anker 2. Der Elektromagnet weist einen U-förmigen Magnetkern 3 auf, der mit einer Erregerwicklung 4 versehen ist. Der Magnetkern 3 und die Erregerwicklung 4 sind über das Giessharz 5 mit dem Gehäuse 6 verbunden. Das Gehäuse 6 besteht in der Regel aus Grauguss.The
Der Anker 2 befindet sich gegenüber den Polflächen 7 des Magnetkerns in einem vorbestimmten Abstand, der im Ruhezustand als Ruheluftspalt oder allgemein als Luftspalt D bezeichnet wird. Beim Betrieb des Schwingungserregers schwingt der Anker in paralleler Ausrichtung senkrecht zu den Polflächen mit einer Amplitude s, die in der Figur nicht dargestellt ist. Das Gehäuse 6 des Elektromagneten ist über Konsolen 8, 8' an einem nicht dargestellten Traggestell befestigt. In Fig. 1 ist die Höhe des Gehäuses, bezogen auf die Polflächen 7, als Länge H angenommen. Bei den bekannten Ausführungsformen befinden sich die gestrichelt eingezeichneten Konsolen 8' am polfernen Ende des Gehäuses. Dies hat zur Folge, dass bei einer Temperaturerhöhung auf die Betriebstemperatur des Schwingungserregers das Gehäuse sich um den Wert Δ H ausdehnt. Um diesen Wert wird der Luftspalt D bei Betriebstemperatur verkleinert.The
Um ein Zusammenschlagen von Anker und Magnetsystem zu vermeiden, müsste der Luftspalt entsprechend der Längenänderung Δ H vergrössert werden. Der Einfluss der Gehäuseausdehnung auf den Luftspalt lässt sich dadurch vermeiden, dass die Konsole 8 gemäss der Erfindung an einer neutralen Stelle des Gehäuses angebracht ist, d. h. möglichst in der Nähe der Pole des Magnetkerns. Dann wirkt sich nämlich eine Vergrösserung der Gehäusehöhe H nicht auf den Luftspalt aus.In order to avoid the armature and magnet system collapsing, the air gap would have to be increased in accordance with the change in length Δ H. The influence of the housing expansion on the air gap can be avoided in that the
Bei erhöhter Temperatur werden durch die starke Ausdehnung des Giessharzes die Pole aus dem Gehäuse zum Anker hin herausgedrückt und damit auch der Luftspalt verringert.At elevated temperatures, the strong expansion of the casting resin pushes the poles out of the housing towards the armature, thereby reducing the air gap.
Dieser Effekt lässt sich dadurch vermindern, dass beispielsweise zusätzlich zu der Giessharzumhüllung der Magnetkern mit dem Gehäuse durch eine starre Verstrebung verbunden ist. Eine andere Möglichkeit besteht darin, dass die Pressplatten 9 (Fig. 2), welche die Bleche des Kernjoches zusammenpressen, mittels einer Verschraubung 10 fest mit dem Gehäuse verbunden werden. Auch dadurch wird vermieden, dass sich der Magnetkern bei einer Wärmeausdehnung, insbesondere des Giessharzes, nicht aus dem Gehäuse 6 abhebt.This effect can be reduced by, for example, in addition to the cast resin coating, the magnetic core is connected to the housing by means of a rigid strut. Another possibility is that the press plates 9 (FIG. 2), which press the sheets of the core yoke together, are firmly connected to the housing by means of a
Eine weitere Möglichkeit, um den Temperatureinfluss des Giessharzes kleinzuhalten, besteht darin, dass auf der Innenseite des Gehäuses 6 krallenförmige Vorsprünge 11 vorgesehen sind, die für eine Verkrallung zwischen dem Giessharz und dem Gehäuse sorgen und damit das Abheben der Pole weitgehend verhindern.Another way of keeping the temperature influence of the casting resin small is that claw-
Die temperaturbedingte Verminderung der Luftspaltbreite lässt sich grundsätzlich aber auch durch eine andersartige Massnahme vermeiden oder zusammen mit einer oder mehreren der vorgenannten Massnahmen noch weiter vermindern. Dazu sind Dehnungselemente 12 vorgesehen, die über Tellerfedern 14 in der Befestigung des Magnetsystems vorgesehen werden. Diese Dehnungselemente lassen sich so bemessen, dass eine temperaturbedingte Änderung des Luftspaltes um - ΔD um den entsprechenden Betrag + ΔD kompensiert wird.The temperature-related reduction in the air gap width can, in principle, also be avoided by a different type of measure, or even further reduced together with one or more of the aforementioned measures. For this purpose,
Die Dehnungselemente 12 können quaderförmig oder zylindrisch sein. Sie weisen nicht dargestellte Aussparungen für Schrauben 15 auf, die in Verbindung mit Muttern 16 zur Befestigung des Gehäuses 6 verwendet werden.The
Claims (8)
- Electromagnetic oscillator comprising an electromagnet consisting of a U-shaped magnet core (3) with an excitation winding (4), which is cast in a housing (6) by casting resin (5), and an armature (2) arranged in front of the pole surfaces (7) of the pole core (3) at a spacing serving as an air gap (D), wherein the armature oscillates in the air gap (D) relative to the pole surfaces at a defined amplitude, characterised thereby that the constructional parts (3, 5, 6), which have an effect on the air gap (D) through thermal expansion in consequence on temperature change, of the oscillator are so constructed with respect to their constructional form and their arrangement and fastening in the housing (6) that their influence on the width of the air gap (D) is small.
- Oscillator according to claim 1, characterised thereby that the housing (6) is fastened to brackets (8) which are arranged at locations of the housing (6) which are neutral with respect to expansion.
- Oscillator according to claim 2, characterised thereby that the brackets (8) lie adjacent to the pole surfaces (7) of the pole core (3).
- Oscillator according to claim 1, characterised thereby that the magnet core (3) is connected with the housing (6) by way of rigid metallic fastenings (9, 10) into the casting resin (5).
- Oscillator according to claim 4, characterised thereby that pressure plates (9), by which the yoke of the pole core (3) is pressed against the housing (6), serve as fastening.
- Oscillator according to claim 5, characterised thereby that the pressure plates (9) are connected with the housing (6) by means of a screw connection (10).
- Oscillator according to one of claims 1 to 6, characterised thereby that claw-shaped projections (11), which cause a hooking with the casting resin (5), are provided at the inner side of the housing.
- Oscillator according to one of claims 1 to 7, characterised thereby that expansion elements (12) are provided in the fastening elements, which position the armature (2) in a predetermined position relative to the pole surfaces (7) of the pole core (3), of the magnet system (1) in such a manner that the change in width of the air gap (D) caused by temperature is compensated for.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4037994A DE4037994C1 (en) | 1990-11-29 | 1990-11-29 | |
| DE4037994 | 1990-11-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0488005A2 EP0488005A2 (en) | 1992-06-03 |
| EP0488005A3 EP0488005A3 (en) | 1993-01-20 |
| EP0488005B1 true EP0488005B1 (en) | 1994-09-28 |
Family
ID=6419161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91119614A Expired - Lifetime EP0488005B1 (en) | 1990-11-29 | 1991-11-18 | Electromagnetic vibration generator |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5406152A (en) |
| EP (1) | EP0488005B1 (en) |
| AT (1) | ATE112188T1 (en) |
| AU (1) | AU647546B2 (en) |
| DE (2) | DE4037994C1 (en) |
| ES (1) | ES2061151T3 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4210287C1 (en) * | 1992-03-28 | 1993-02-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De | EM oscillation inducer with U=shaped core for windings - has measurement value pick=up for high efficiency but preventing armature in air gap impacting shanks of magnetic core |
| US5315190A (en) * | 1992-12-22 | 1994-05-24 | Stirling Technology Company | Linear electrodynamic machine and method of using same |
| FR2778013A1 (en) * | 1998-04-24 | 1999-10-29 | Casadio Sa | Electromagnetic vibrator with sealed components |
| DE19832190C2 (en) * | 1998-07-17 | 2003-06-26 | Vibtech Vibrationstechnische S | Magnetically driven vibrator |
| JP4073584B2 (en) * | 1998-11-04 | 2008-04-09 | 株式会社ミクニ | Valve drive device |
| BR8102102Y1 (en) * | 2001-08-09 | 2009-05-05 | arrangement in the coil mounting on the core. | |
| US6651807B2 (en) * | 2001-12-18 | 2003-11-25 | Fmc Technologies, Inc. | Parts feeder |
| US6914351B2 (en) * | 2003-07-02 | 2005-07-05 | Tiax Llc | Linear electrical machine for electric power generation or motive drive |
| DE10335141B4 (en) * | 2003-07-31 | 2006-09-21 | Siemens Ag | Electric machine with coolant duct |
| US20070108103A1 (en) * | 2005-11-16 | 2007-05-17 | Guy Mc Clung | Vibratory separators and operations |
| US20090261665A1 (en) * | 2008-04-17 | 2009-10-22 | Leao Wang | Electromagnetic vibrating mechanism |
| US8878401B2 (en) * | 2010-11-10 | 2014-11-04 | Lg Innotek Co., Ltd. | Linear vibrator having a trembler with a magnet and a weight |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345525A (en) * | 1967-10-03 | Adjustable electric magnetic vibrator | ||
| DE1106103B (en) * | 1957-10-31 | 1961-05-04 | Licentia Gmbh | Electromagnetic vibration exciter in the form of a spring-coupled two-mass vibration system and process for its production |
| US3130333A (en) * | 1961-05-17 | 1964-04-21 | Walbro Corp | Electric pump motor |
| US3167670A (en) * | 1962-12-26 | 1965-01-26 | Link Belt Co | Electromagnetic vibrators |
| CA768731A (en) * | 1963-03-12 | 1967-10-03 | V. Braine Michael | Resonator structure and method of construction |
| US3312841A (en) * | 1963-10-22 | 1967-04-04 | Shinko Electric Co Ltd | Electromagnetic vibrator |
| DE6604827U (en) * | 1968-05-05 | 1970-02-26 | Licentia Gmbh | MAGNETIC VIBRATOR |
| DE2050647A1 (en) * | 1970-10-15 | 1972-05-31 | Transformatoren Union Ag | Electromagnetic vibrator |
| US4074154A (en) * | 1976-05-27 | 1978-02-14 | Ife Gesellschaft Mbh | Electromagnetic vibrator with improved spring mounts |
| DE3204534C2 (en) * | 1982-02-10 | 1984-02-23 | Chemie Und Filter Gmbh, Verfahrenstechnik Kg, 6900 Heidelberg | Electromagnetically operated diaphragm pump |
| JPS6167400A (en) * | 1984-09-11 | 1986-04-07 | Sanden Corp | Electromechanical vibration transducer |
| JP2531876Y2 (en) * | 1988-12-15 | 1997-04-09 | 日東工器株式会社 | Magnet holder for electromagnetic diaphragm pump |
| US4950931A (en) * | 1989-01-17 | 1990-08-21 | Motorola, Inc. | Vibrator |
| US4994698A (en) * | 1990-06-13 | 1991-02-19 | General Electric Company | Vibratory linear motor system |
-
1990
- 1990-11-29 DE DE4037994A patent/DE4037994C1/de not_active Expired - Fee Related
-
1991
- 1991-11-18 EP EP91119614A patent/EP0488005B1/en not_active Expired - Lifetime
- 1991-11-18 DE DE59103110T patent/DE59103110D1/en not_active Expired - Fee Related
- 1991-11-18 AT AT91119614T patent/ATE112188T1/en not_active IP Right Cessation
- 1991-11-18 ES ES91119614T patent/ES2061151T3/en not_active Expired - Lifetime
- 1991-11-21 AU AU88050/91A patent/AU647546B2/en not_active Ceased
- 1991-11-27 US US07/799,829 patent/US5406152A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE112188T1 (en) | 1994-10-15 |
| AU8805091A (en) | 1992-06-04 |
| EP0488005A2 (en) | 1992-06-03 |
| US5406152A (en) | 1995-04-11 |
| DE59103110D1 (en) | 1994-11-03 |
| DE4037994C1 (en) | 1992-03-05 |
| AU647546B2 (en) | 1994-03-24 |
| EP0488005A3 (en) | 1993-01-20 |
| ES2061151T3 (en) | 1994-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0488005B1 (en) | Electromagnetic vibration generator | |
| DE2753449A1 (en) | ELECTROMAGNETIC VIBRATION PUMP | |
| EP1108283B1 (en) | Electromagnetic actuator with an oscillating spring-mass system | |
| EP0580272B1 (en) | Vibration damper | |
| DE10041807C2 (en) | Oscillating force generator and vibration damper using the generator | |
| DE3401598A1 (en) | LINEAR ACTUATOR WITH HYBRID STRUCTURE | |
| DE19921115C2 (en) | Fluid-tight vibration absorption device | |
| DE1512319A1 (en) | Electromechanical resonator | |
| DE69513905T2 (en) | Vibration feeder for parts | |
| EP3801855B1 (en) | Device for mixing liquids and solids with liquids by means of vibration | |
| EP0402495B1 (en) | Method and device for operating a magnetically driven vibrating conveyor | |
| DE112013006545T5 (en) | Magnetostrictive vibration power generation device | |
| DE2751410A1 (en) | DYNAMIC VIBRATION DAMPER | |
| EP2208693B1 (en) | Linear vibration feeder | |
| EP1080502A1 (en) | Circuit for the dynamic control of ceramic solid-state actuators | |
| DE2847208C2 (en) | Control circuit for a vibratory electromechanical system | |
| DE3306509A1 (en) | ELECTROMAGNETIC Vibration Exciter | |
| EP2003709B1 (en) | Piezo converter with primary automatic control and pertinent piezo transformer | |
| DE1513867A1 (en) | Electric induction device | |
| DE3813387C3 (en) | Vibratory conveyor with magnetically driven two-mass system | |
| DE102004025725B4 (en) | Computer case fixing system | |
| WO1995026619A1 (en) | Crucible induction furnace with at least two coils connected in parallel to a resonant frequency converter | |
| DE3508367C2 (en) | ||
| CH665509A5 (en) | ELECTROMECHANICAL-HYDRAULIC AGGREGATE FOR CONVEYING LIQUIDS. | |
| AT360907B (en) | VIBRATION CONVEYOR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE ES FR GB IT LI |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE ES FR GB IT LI |
|
| 17P | Request for examination filed |
Effective date: 19930513 |
|
| 17Q | First examination report despatched |
Effective date: 19940208 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE ES FR GB IT LI |
|
| REF | Corresponds to: |
Ref document number: 112188 Country of ref document: AT Date of ref document: 19941015 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 59103110 Country of ref document: DE Date of ref document: 19941103 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2061151 Country of ref document: ES Kind code of ref document: T3 |
|
| ET | Fr: translation filed | ||
| ITF | It: translation for a ep patent filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19941202 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19980108 Year of fee payment: 7 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: LICENTIA PATENT- VERWALTUNGS-GMBH TRANSFER- AEG VI Ref country code: CH Ref legal event code: NV Representative=s name: KIRKER & CIE SA |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981130 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981130 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20021108 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20021112 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20021119 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20021122 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20021126 Year of fee payment: 12 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031118 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031118 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031119 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040602 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20031118 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040730 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20031119 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051118 |