EP0173048A1 - Dispositif électromagnétique avec protection contre l'échauffement excessif - Google Patents

Dispositif électromagnétique avec protection contre l'échauffement excessif Download PDF

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Publication number
EP0173048A1
EP0173048A1 EP85108798A EP85108798A EP0173048A1 EP 0173048 A1 EP0173048 A1 EP 0173048A1 EP 85108798 A EP85108798 A EP 85108798A EP 85108798 A EP85108798 A EP 85108798A EP 0173048 A1 EP0173048 A1 EP 0173048A1
Authority
EP
European Patent Office
Prior art keywords
coil
fuse
switching element
temperature
overheating protection
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.)
Granted
Application number
EP85108798A
Other languages
German (de)
English (en)
Other versions
EP0173048B1 (fr
Inventor
Matthias Dipl.-Ing. Aschberger
Karlheinz Dipl.-Ing. Färber
Anton Dipl.-Ing. Deininger
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.)
BSH Hausgeraete GmbH
Coca Cola Co
Original Assignee
Bosch Siemens Hausgerate GmbH
Coca Cola Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6243660&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0173048(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bosch Siemens Hausgerate GmbH, Coca Cola Co filed Critical Bosch Siemens Hausgerate GmbH
Priority to AT85108798T priority Critical patent/ATE58448T1/de
Publication of EP0173048A1 publication Critical patent/EP0173048A1/fr
Application granted granted Critical
Publication of EP0173048B1 publication Critical patent/EP0173048B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • H01F2027/406—Temperature sensor or protection

Definitions

  • the present invention relates to an electromagnet arrangement with an electromagnet coil, in which the wire windings of the excitation stage are carried by a coil support body and are insulated from a magnetic flux body made of ferromagnetic conductive material, using a switching element switched into the excitation circuit as overheating protection.
  • Overheating protection measures belong to the general state of the art. Such protective measures against overheating are also used for the field windings of electric motors and electromagnets. Either temperature protection switches or temperature protection fuses can be used. Temperature protection switches only interrupt the power supply when the temperature is above a set limit, while temperature protection fuses cause permanent interruption of the excitation current path due to overheating.
  • the use of such protective measures is particularly important if they are only designed for short-term exposure and there is a risk of long-term exposure. With long-term loads in this connection, overheating of the excitation coil would lead to the destruction of the wire insulation and, as a result, to short circuits. For this reason, the overheating protection measures, be it a temperature protection switch or a temperature protection fuse, are integrated in the excitation coil. The response value for the fuse element is selected such that the critical temperature for destroying the excitation coil is certainly not reached.
  • the electromagnetic coil is loaded in such a way that the critical temperature for the temperature protection element and thus the critical temperature for the electromagnet arrangement are not reached, but high temperatures below these limit values are generated relatively permanently, the electromagnetic coil also surrounds it, in particular that made of ferromagnetically conductive Material existing magnetic flux body heated to high temperatures. In particular, if this is held in a plastic housing, this can lead to undesirable side effects, for example scorching. To counteract this, it may be necessary to take overheating protection measures in this area as well.
  • An electromagnet arrangement with fuse protection which fully meets these requirements, is characterized according to the invention in that the fuse switching element for overheating protection is arranged in the coil carrier in the region between the electromagnetic excitation coil and the magnetic flux body.
  • the fuse switching element is thermally coupled both to the excitation coil and to the magnetic flux body of the electromagnet arrangement.
  • the temperature limit value of this fuse switching element will be between the limit values for the critical temperature of the excitation coil and the critical temperature for the environment, this value being in particular close to the critical temperature for the environment.
  • a temperature gradient occurs between the temperature of the excitation coil and the temperature of the magnetic flux body. Since both functional elements act on the fuse switching element, the different accidents that can lead to overheating can Be taken into account.
  • the response value of the fuse switching element is reached as a mean value when the temperature in the excitation coil rises to the range of a critical value. If, however, the magnetic flux body is heated to a temperature which should not be exceeded with regard to the surroundings, for example a plastic housing, then the additional heating of the excitation coil triggers the fuse switching element.
  • the arrangement of the fuse switching element in the coil carrier body is also advantageous in view of the fact that the excitation coil need not be spatially loaded by this fuse switching element. It is to be assigned to the excitation coil after its completion. This also simplifies the replacement of this fuse switching element.
  • the fuse switching element for the overheating protection is arranged in an end flange of the coil carrier body. In this case, this would have to be trained somewhat more.
  • the electromagnet arrangement according to the invention is characterized in that a temperature fuse which can be destroyed when the overheating protection limit value is exceeded is arranged as a fuse switching element for the overheating protection.
  • a temperature fuse which can be destroyed when the overheating protection limit value is exceeded is arranged as a fuse switching element for the overheating protection.
  • a general malfunction or permanent impairment of the electromagnet arrangement occurs when the temperature response value at the fuse switching element is reached. In this case, it would be problematic to use a temperature protection switch which, after cooling down, ensures that the electromagnet arrangement is operational again.
  • An electromagnetic coil 2 applied to a coil former 1 is arranged on a cylindrical core 3 made of ferromagnetic material.
  • a cylindrical core 3 made of ferromagnetic material.
  • two flat-pole legs 4 are arranged, which have cylindrical openings in which the cylindrical core 3 is wedged.
  • the free ends of the flat-profile legs 4 protrude into the area of a metering valve 5 for beverage concentrates, such as those used in devices for mixing soft drinks.
  • a part of the control slide 6 of this metering device 5 consists of ferromagnetic conductive material and can thus be influenced as a plunger 7 between the free ends of the flat-profile legs 4.
  • the flat-profile legs 4 cover the cross section of this electromagnetic coil 3, so that the magnetic fields emerging from the end face are advantageously taken over.
  • a temperature protection fuse 9 is attached such that it is in thermal contact with the adjacent flat-profile leg 4 of the magnetic flux body and with the electromagnetic coil 3. The excitation current for the electromagnetic coil 3 is conducted via this temperature protection fuse 9.
  • the temperature protection fuse 9 can be designed as a fuse or can be implemented by a semiconductor, which is destroyed when the temperature value which is not to be exceeded is reached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • General Induction Heating (AREA)
  • Valve Device For Special Equipments (AREA)
  • Braking Arrangements (AREA)
  • Fuses (AREA)
  • Processing Of Solid Wastes (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Breakers (AREA)
EP85108798A 1984-08-22 1985-07-13 Dispositif électromagnétique avec protection contre l'échauffement excessif Expired - Lifetime EP0173048B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85108798T ATE58448T1 (de) 1984-08-22 1985-07-13 Elektromagnetanordnung mit ueberhitzungsschutz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3430927 1984-08-22
DE19843430927 DE3430927A1 (de) 1984-08-22 1984-08-22 Elektromagnetanordnung mit ueberhitzungsschutz

Publications (2)

Publication Number Publication Date
EP0173048A1 true EP0173048A1 (fr) 1986-03-05
EP0173048B1 EP0173048B1 (fr) 1990-11-14

Family

ID=6243660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108798A Expired - Lifetime EP0173048B1 (fr) 1984-08-22 1985-07-13 Dispositif électromagnétique avec protection contre l'échauffement excessif

Country Status (10)

Country Link
US (1) US4771198A (fr)
EP (1) EP0173048B1 (fr)
JP (1) JPS61198605A (fr)
KR (1) KR900002589B1 (fr)
AT (1) ATE58448T1 (fr)
AU (1) AU587394B2 (fr)
CA (1) CA1251823A (fr)
DE (2) DE3430927A1 (fr)
ES (1) ES8704033A1 (fr)
ZA (1) ZA855709B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH683575A5 (fr) * 1990-10-11 1994-03-31 Honeywell Lucifer Sa Ensemble d'électroaimants pour électrovalves à commande directe.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2770938B2 (ja) * 1995-03-08 1998-07-02 サンデン株式会社 電磁装置
JP3627313B2 (ja) * 1995-03-29 2005-03-09 株式会社デンソー 電磁クラッチ
US6028381A (en) * 1996-02-09 2000-02-22 Hitachi, Ltd. Starter equipped with current interruption mechanism
JPH10110744A (ja) * 1996-10-07 1998-04-28 Sanden Corp 電磁クラッチ用電磁石
JP2001244111A (ja) * 2000-02-29 2001-09-07 Sanden Corp コイルボビン
US6873071B2 (en) * 2003-06-03 2005-03-29 Pratt & Whitney Canada Corp. Method, apparatus and system for controlling an electric machine
DE102007036310A1 (de) * 2007-07-31 2009-02-05 Hydac Electronic Gmbh Sicherheitsvorrichtung
US11937516B2 (en) * 2020-03-04 2024-03-19 International Business Machines Corporation Fabrication of a flux bias line local heating device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1488992A1 (de) * 1966-04-25 1969-04-03 Helmut Maylandt UEbertemperatursicherung fuer elektrische Wicklungen,insbesondere Drosselspulen fuer Leuchtstofflampen
US3691425A (en) * 1971-04-15 1972-09-12 Certron Corp Transformer with a fuse
DE2536375A1 (de) * 1975-08-14 1977-02-17 Norbert Weiner Anordnung fuer die thermische sicherung von elektrischen spulen
US4112405A (en) * 1976-08-16 1978-09-05 Mark Joseph Coil with protection against overheating
DE3120041A1 (de) * 1981-05-20 1982-12-09 Rolf Dipl.-Ing. 7140 Ludwigsburg Gneiting Magnetspule fuer schuetze und magnetventile
US4454554A (en) * 1980-07-28 1984-06-12 The General Industries Company Coil bobbin

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152290A (en) * 1962-06-06 1964-10-06 Gen Motors Corp Rotary electromagnet construction
DE7115009U (de) * 1971-04-20 1971-07-15 Elektroteile Gmbh Elektromagnet mit thermoschalter
DE8232850U1 (de) * 1982-11-23 1983-05-11 Herion-Werke Kg, 7012 Fellbach Elektromagnet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1488992A1 (de) * 1966-04-25 1969-04-03 Helmut Maylandt UEbertemperatursicherung fuer elektrische Wicklungen,insbesondere Drosselspulen fuer Leuchtstofflampen
US3691425A (en) * 1971-04-15 1972-09-12 Certron Corp Transformer with a fuse
DE2536375A1 (de) * 1975-08-14 1977-02-17 Norbert Weiner Anordnung fuer die thermische sicherung von elektrischen spulen
US4112405A (en) * 1976-08-16 1978-09-05 Mark Joseph Coil with protection against overheating
US4454554A (en) * 1980-07-28 1984-06-12 The General Industries Company Coil bobbin
DE3120041A1 (de) * 1981-05-20 1982-12-09 Rolf Dipl.-Ing. 7140 Ludwigsburg Gneiting Magnetspule fuer schuetze und magnetventile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH683575A5 (fr) * 1990-10-11 1994-03-31 Honeywell Lucifer Sa Ensemble d'électroaimants pour électrovalves à commande directe.

Also Published As

Publication number Publication date
EP0173048B1 (fr) 1990-11-14
DE3580544D1 (de) 1990-12-20
AU4650885A (en) 1986-02-27
KR860002120A (ko) 1986-03-26
CA1251823A (fr) 1989-03-28
AU587394B2 (en) 1989-08-17
ATE58448T1 (de) 1990-11-15
KR900002589B1 (ko) 1990-04-20
US4771198A (en) 1988-09-13
JPH0315325B2 (fr) 1991-02-28
ES8704033A1 (es) 1987-03-01
ZA855709B (en) 1986-03-26
JPS61198605A (ja) 1986-09-03
DE3430927A1 (de) 1986-03-06
ES546308A0 (es) 1987-03-01
DE3430927C2 (fr) 1991-08-14

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