EP1333539A1 - Elektricher Teil für Magnetventil - Google Patents

Elektricher Teil für Magnetventil Download PDF

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Publication number
EP1333539A1
EP1333539A1 EP03001348A EP03001348A EP1333539A1 EP 1333539 A1 EP1333539 A1 EP 1333539A1 EP 03001348 A EP03001348 A EP 03001348A EP 03001348 A EP03001348 A EP 03001348A EP 1333539 A1 EP1333539 A1 EP 1333539A1
Authority
EP
European Patent Office
Prior art keywords
housing
cover
electrical
connection chamber
electrical part
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
EP03001348A
Other languages
English (en)
French (fr)
Other versions
EP1333539B1 (de
Inventor
Christophe Favre
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.)
Parker Hannifin Manufacturing Switzerland SA
Original Assignee
Parker Lucifer SA
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 Parker Lucifer SA filed Critical Parker Lucifer SA
Publication of EP1333539A1 publication Critical patent/EP1333539A1/de
Application granted granted Critical
Publication of EP1333539B1 publication Critical patent/EP1333539B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/527—Flameproof cases

Definitions

  • the present invention relates to the electrical part explosion-proof of a solenoid valve comprising a case enclosing a coil, on which is a electrical connection chamber closed by a cover, the housing being intended to be coupled with the mechanical part of a solenoid valve, the coil constituting the electromagnetic actuator of the valve.
  • EN 50018 Due to certain standards, in particular the standard European standard EN 50018, defining the characteristics that electrical equipment must comply with explosive atmosphere, housings and chambers electrical connection are made of alloy metallic, for example in ferritic iron. Indeed, EN 50018 tolerates internal explosions but imposes on the envelopes of these materials of power resist these internal explosions they could suffer due to gas locked in their cases. These explosions must be contained by the envelope, that is to say to have no impact on the environment explosive exterior.
  • the object of the invention is to carry out the part electric of a solenoid valve overcoming these disadvantages.
  • the invention proposes to carry out an explosion-proof electrical part meeting the specifications of the European standard EN 50018 for the use of electrical equipment in explosive medium, including the housing and the electrical connection are made of molded plastic, thereby reducing manufacturing costs.
  • housing means any means containing the coil, the metallic conductors supplying the coil and, possibly a thermal protection element.
  • the electrical part according to the invention is characterized in that the cover and / or the housing have projections intended to decrease the unoccupied volume of the electrical connection chamber.
  • the case of the electrical part is either closed by a cover, either in the form of two half-shells, either in one piece.
  • Figure 1 is a plan view of an electrical part according to the invention.
  • Figure 2 shows a partial view exploded.
  • Figure 3 is a longitudinal sectional view along the plan III-III of figure 1.
  • the electrical part shown in Figure 3 consists of a housing 1 closed by a cover 2.
  • This housing contains an electromagnetic coil 11, electrical conductors 12 and a thermal protection element 13.
  • This housing is made of plastic and the unoccupied volume 16 which it defines is filled with a resin, preferably a class H resin, during manufacture.
  • On this housing is arranged an electrical connection chamber 3 closed by a plastic cover 30, held in position by means of a screw 8 aimed in a nut 17 inserted in the housing 1.
  • This chamber encloses the ends of the electrical conductors 12 supplying the coil 11, these conductors being connected to connection means of AMP type or the like intended for the connection of power cables 18 penetrating into the housing 1 through the orifice 14.
  • This chamber also contains a fuse 19 limiting the current electric.
  • the housing 1 has on its upper face a wall 4 which is housed in a groove 5 of the cover 30 and crushing a seal 6 located at the bottom of this groove 5.
  • the functional clearances allowing the housing 1 and the cover 30 to fit in one in the other are defined by the standards regulating the use of electrical equipment in an explosive environment, in particular the European standard EN 50018. This installation and these functional clearances make it possible to prevent the propagation of the flames of an explosion in the electrical connection 3 to the explosive outdoor environment.
  • the bottom of the cover 30 has projections, such as the projection 10 visible in FIG. 3, making it possible to reduce the unoccupied volume in the electrical connection chamber. Thus, the amount of gas trapped in the electrical connection chamber 3 is reduced and, consequently, the violence of a possible explosion in the electrical connection chamber is reduced. This risk being reduced, it is then possible, respecting the European standard EN 50018 fixing the maximum unoccupied volume in a plastic enclosure at 10 cm 3 , to produce the connection chamber 3 and its cover 30 in such a material.
  • the bottom of the room also has protrusions, but it is preferable that the projections are only on the cover so as not to impede access to connections.
  • the unoccupied volume can be relatively large before closing and small with the lid.
  • the case 1 can be closed, as shown in the Figure 1, by a cover 2 after filling the volume 16 with a resin.
  • the housing 1 can be produced by means of two half-shells together defining an unoccupied volume which is filled with a resin during manufacture.
  • the electrical connection chamber 3 is preferably, made separately and inserted in the housing 1, that is in an opening provided for this purpose in the housing either between two cuts if the case 1 is made at by means of two attached and welded half-shells.
  • the housing 1 can also be produced by inserting the different components in a plastic material.
  • the electrical conductors 12 and the thermal protection element 13 in a mold injection, in which the connection chamber 3 has been previously deposited and positioned then in injecting the plastic, we get a housing with no unoccupied volume.
  • the insert constituting the chamber connection could have a groove in which would fit a wall of the cover, the volume of the connection chamber being fully defined by the hood-like cover, the insert being essentially flat.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Magnetically Actuated Valves (AREA)
EP20030001348 2002-02-05 2003-01-24 Elektricher Teil für Magnetventil Expired - Lifetime EP1333539B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1902002 2002-02-05
CH1902002 2002-02-05

Publications (2)

Publication Number Publication Date
EP1333539A1 true EP1333539A1 (de) 2003-08-06
EP1333539B1 EP1333539B1 (de) 2012-06-20

Family

ID=4436808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030001348 Expired - Lifetime EP1333539B1 (de) 2002-02-05 2003-01-24 Elektricher Teil für Magnetventil

Country Status (2)

Country Link
EP (1) EP1333539B1 (de)
DK (1) DK1333539T3 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117887A2 (de) * 1983-02-08 1984-09-12 P. GRANZOW Aps Magnetspulen betätigtes Ventil zum Ableiten von kondensierter Flüssigkeit aus Druckgassystemen
EP0203751A2 (de) * 1985-05-14 1986-12-03 BICC Public Limited Company Elektrischer Verbinder
DE4118834A1 (de) * 1991-06-07 1992-12-10 Teves Gmbh Alfred Hydraulikaggregat
EP0832801A2 (de) * 1996-09-26 1998-04-01 Sumitomo Electric Industries, Ltd. Hydraulische Steuereinheit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117887A2 (de) * 1983-02-08 1984-09-12 P. GRANZOW Aps Magnetspulen betätigtes Ventil zum Ableiten von kondensierter Flüssigkeit aus Druckgassystemen
EP0203751A2 (de) * 1985-05-14 1986-12-03 BICC Public Limited Company Elektrischer Verbinder
DE4118834A1 (de) * 1991-06-07 1992-12-10 Teves Gmbh Alfred Hydraulikaggregat
EP0832801A2 (de) * 1996-09-26 1998-04-01 Sumitomo Electric Industries, Ltd. Hydraulische Steuereinheit

Also Published As

Publication number Publication date
EP1333539B1 (de) 2012-06-20
DK1333539T3 (da) 2012-09-17

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