EP1258016A1 - Magnetisch steuerbare schaltklappe - Google Patents
Magnetisch steuerbare schaltklappeInfo
- Publication number
- EP1258016A1 EP1258016A1 EP01907509A EP01907509A EP1258016A1 EP 1258016 A1 EP1258016 A1 EP 1258016A1 EP 01907509 A EP01907509 A EP 01907509A EP 01907509 A EP01907509 A EP 01907509A EP 1258016 A1 EP1258016 A1 EP 1258016A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching flap
- electromagnet
- permanent magnet
- field lines
- magnetically controllable
- 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- Withdrawn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
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
- H01F7/14—Pivoting armatures
- H01F7/145—Rotary electromagnets with variable gap
-
- 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
Definitions
- the invention relates to a magnetically controllable switching flap according to the preamble of the main claim.
- an actuator has a permanent magnet which can be moved in a magnetic field generated by an electromagnet.
- the permanent magnet is designed eccentrically in such a way that it bears against magnetizable holding elements depending on the direction of current flow in the electromagnet in a first or in a second end position.
- the invention has for its object to provide a magnetically controllable switching element that is moved and held with a simple structure by magnetic forces.
- the permanent magnet according to the invention is advantageously magnetized in a predetermined direction in such a way that the direction of these field lines coincides with the direction of movement the switching flap changes.
- the directions of the field lines of the permanent magnet and / or of the electromagnet are arranged in such a way that the movement of the switching flap takes place in an area where the field lines of the two magnets are predominantly perpendicular to one another.
- adjustable flaps can also be realized in the m-defined areas in m-defined areas, which can be produced at relatively low costs.
- Such an arrangement can be advantageously implemented in channels with low flow, e.g. in acoustic modules, e.g. only an open / close position and no high positioning and holding forces are required, such as. B. at very high flow rates.
- At least one additional holding magnet can be arranged in a simple manner, which is arranged opposite the magnetic field of the permanent magnet in such a way that predetermined holding positions of the switching flap can be generated by attractive or repulsive forces. So that the switching flap lies in the end positions (0 °, 90 °) and cannot stay at any angle, a permanent magnet as a holding magnet can produce a so-called snap effect.
- the north pole of this small holding magnet and the north pole of the permanent magnet m of the switching flap collide a suitable arrangement, so that as a result the switching flap tries to avoid this magnet between the end positions.
- the essential component of the magnetic switching flap is the permanent magnet, which is surrounded by an electrical winding, which generates the actuation field as an electromagnet. If the electrical winding is energized, the permanent magnet tries to align itself in this field in such a way that it takes the same direction as the magnetic lines of the magnetic field. Since the resulting force for the movement of the switching flap is greatest when the field directions are perpendicular to one another, the flap should be magnetized in such a way that the two fields are never parallel to one another in the entire worm area, i.e. do not work in exactly the opposite direction.
- the switching flap according to the invention can be rotatably adjusted in a winding range of approximately 90 °, so that the field lines of the permanent magnet in the winding range of the switching flap movement move relative to the field lines of the electromagnet in a winding range of approximately 45 ° to 135 °.
- the permanent magnet is magnetized in such a way that its field lines have an angle of approximately 45 ° to the direction of extension of the switching flap. It is also possible here that the coil of the electromagnet is arranged in such a way that its field lines have an angle of approximately 45 ° to an end position of the switching flap or that a combination of the two measures described above has been carried out.
- the respective positions of the switching flap can possibly also be network-sensitive sensor, such as a Hall sensor, can be detected and evaluated.
- An advantageous application of the magnetically controllable switching flap can be realized in that the switching flap is located in a flow-through tube or channel and is held on an axis transverse to the flow direction in such a way that the flow cross-section can be largely closed or opened by rotating the switching flap.
- the electromagnet is formed here by a coil wound on the outside of the non-magnetic tube or the channel in the area of the switching flap.
- the switching flap can be used hermetically sealed in a tube, so that there are no rotatable bearing axes that extend through the tube. These switching flaps can either be completely manufactured as a separate component or used as assembly parts as a fully wound coil former and switching flap in other assemblies.
- the coil is wrapped around the switch flap carrier, i.e. around the pipe to which it is located. The coil should be as long as the magnet itself when it lies horizontally in the tube.
- the switching flap can be actuated by a short, strong current pulse (approx. 10 A; ⁇ 0.2 s).
- the direction of rotation of the switching flap is determined by reversing the polarity.
- the current required for the brief current pulse of high current can be applied, for example, with the aid of electrolytic capacitors.
- the axis of the switching flap can also be arranged in such a way that the switching flap has an asymmetrical position in the flow cross-section.
- the switching flap can be kept closed by the applied one-sided pressure of the medium.
- the switching flap could then be opened, for example by pulsation, in the event of a shorter, shorter pressure difference
- the electromagnet is advantageously formed by two coils wound in the same direction one behind the other on the outside of the tube or the channel.
- the switching flap withstands a higher back pressure in this embodiment and cannot be easily adjusted by a possibly strong flow in the tube.
- the switching flap can also be produced from only a few, for example plastic injection molded parts, the permanent magnet also being directly injected into the switching flap here.
- a further embodiment of the magnetic switching flap according to the invention is characterized in that the switching flap is located in a flow-through tube or channel and that the electromagnet modification to the previously described exemplary embodiments is arranged inside a fixed axis.
- the switching flap is rotatably mounted on non-magnetic regions of the fixed axis and has a magnetic guide plate which includes a permanent magnet opposite the coil on each flap side, this plate closing the magnetic flux.
- the switching flap can also advantageously be driven within the axis, as a result of which a particularly hermetic seal of the entire arrangement in the tube or in the channel is possible.
- the advantageous embodiments of the magnetic switching flaps can be used, for example, in the area of acoustic assemblies or in the area of air conditioning systems in vehicles. Another application can be so-called resonance flaps in the intake manifold of a motor vehicle if certain limit values are observed depending on the selected embodiment.
- the switching flaps according to the invention switch very quickly and can also be produced very inexpensively, and they also meet the requirements for energy savings, since they do not require a holding current in their rest positions.
- FIG. 1 is a schematic diagram of a switching flap in a flow-through tube with a holding magnet
- FIG. 2 shows a detailed sketch of the permanent magnet and the holding magnet according to FIG. 1 with the field lines;
- Figure 3 shows an embodiment with two coils of an electromagnet and mechanical locking
- Figure 4 shows an exemplary embodiment with an electromagnet m a fixed axis of the switching flap.
- FIG. 1 shows a section of a pipe 1 through which a medium flows according to arrow 2 and which has a switching flap 3 with which the flow cross section of the pipe 1 can be closed.
- the switching flap 3 has a permanent magnet 4 and is rotatably mounted in the tube 1 about the axis 5.
- a coil 6 is arranged on the outside of the tube 1 and generates a magnetic field when an electrical voltage is applied to the + and - connection.
- a permanent magnet 7 is also present as a holding magnet.
- the two magnets 4 and 7 and the coil 6 can be seen in detail from FIG. 2, the directions of the magnetizations of the permanent magnet 4 and the holding magnet 7 being indicated. It is assumed here that the switching flap 3 is rotatably adjusted to a range of approximately 90 ° in order to open or close the pipe cross section.
- the permanent magnet 4 is magnetized such that its field lines -st ⁇
- the field lines of the permanent magnet 4 move in the angular range of the switching flap movement relative to the field lines of the electromagnet 6, or +/- 45 ° to the holding magnet 7 or in a angular range of
- FIG. 3 shows an exemplary embodiment in which the electromagnet is formed by two coils 10 and 11 wound on the tube 1 in the same direction one behind the other.
- a bellows 13 is arranged, which presses the two windings onto one another as an elastic spring.
- the axis 5 of the switching flap 3 is held via a claw coupling, not shown here, in such a way that it can be locked in predetermined positions.
- the coils 10 and 11 attract each other and the axis 5 is released for movement, the axis 5 being shaped as a square or cross slot.
- the electromagnet for driving a switching flap is arranged 20 m away from the previously described exemplary embodiments according to FIGS. 1 to 3 inside a fixed axis 21, a magnetic guide plate 22 being guided along the non-magnetic ends of the axis 21, to rule out a magnetic short circuit.
- the switching flap 20 is rotatably mounted here on non-magnetic areas of the fixed axis 21.
- the magnetic guide plate 22 includes on each side of the switching flap 20 a permanent magnet 24 opposite a coil 23 of the electromagnet.
- a Hall sensor 25 is arranged here as an angle sensor, to which a sensor magnet 26 is arranged opposite, this sensor Sormagnet 26 can also be omitted without significant impairment of the function, since the magnetic field of the main magnets is sufficient for the sensor function.
- the windings of the coil 23, which is wound on a soft iron core 27, can be seen in more detail.
- the magnetic circuit 28 is indicated schematically, which is formed from the permanent magnets 24 and the magnetic guide plates 22 closing the magnetic circuit.
- FIG. 6 shows an embodiment of a magnetic guide plate 29 which is very easy to produce and to which the permanent magnets 24 are attached, comparable to the arrangement according to FIG.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10008668 | 2000-02-24 | ||
| DE2000108668 DE10008668A1 (de) | 2000-02-24 | 2000-02-24 | Magnetisch steuerbare Schaltklappe |
| PCT/EP2001/001337 WO2001063627A1 (de) | 2000-02-24 | 2001-02-08 | Magnetisch steuerbare schaltklappe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1258016A1 true EP1258016A1 (de) | 2002-11-20 |
Family
ID=7632249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01907509A Withdrawn EP1258016A1 (de) | 2000-02-24 | 2001-02-08 | Magnetisch steuerbare schaltklappe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1258016A1 (de) |
| DE (1) | DE10008668A1 (de) |
| WO (1) | WO2001063627A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10218471A1 (de) * | 2002-04-25 | 2003-11-06 | Mann & Hummel Filter | Magnetisch steuerbares Stellglied |
| EP2003308B1 (de) * | 2007-06-12 | 2010-04-14 | Arno Hofmann | Gasführendes Drehklappenventil |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB743852A (en) * | 1952-02-08 | 1956-01-25 | Milwaukee Gas Speciality Compa | Improvements in or relating to electro-magnetic control devices |
| US3593238A (en) * | 1968-10-30 | 1971-07-13 | Nissan Motor | Throttle control unit for control system of automotive automatic transmission |
| DE3640188C2 (de) * | 1986-11-25 | 1995-03-23 | Deutsche Aerospace | Stellglied |
| DE3905901A1 (de) * | 1989-02-25 | 1990-08-30 | Vdo Schindling | Verstellantrieb fuer eine drosselklappe eines verbrennungsmotors |
| DE3908546C2 (de) * | 1989-03-16 | 1995-01-05 | Vdo Schindling | Elektromotorischer Verstellantrieb für eine Drosselklappe eines Verbrennungsmotors |
| DE4020275C2 (de) * | 1990-06-26 | 1993-12-16 | Lucas Ind Plc | Stellenantrieb zur Einstellung von zwei selbsthaltenden Lagen |
| DE4401585C2 (de) * | 1994-01-20 | 1998-10-29 | Mann & Hummel Filter | Drosseleinrichtung |
| DE19504243A1 (de) * | 1994-06-10 | 1995-12-14 | Philips Patentverwaltung | Vorrichtung zum Verstellen eines Stellgliedes |
-
2000
- 2000-02-24 DE DE2000108668 patent/DE10008668A1/de not_active Withdrawn
-
2001
- 2001-02-08 EP EP01907509A patent/EP1258016A1/de not_active Withdrawn
- 2001-02-08 WO PCT/EP2001/001337 patent/WO2001063627A1/de not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO0163627A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001063627A1 (de) | 2001-08-30 |
| DE10008668A1 (de) | 2001-08-30 |
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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 |
|
| 17P | Request for examination filed |
Effective date: 20020911 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HAUBOLD, THOMAS Inventor name: VACULIK, ROBERT |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MANN + HUMMEL GMBH |
|
| 17Q | First examination report despatched |
Effective date: 20070306 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20070717 |