EP0116066A1 - Contactor for connecting and disconnecting one or more electrical circuits - Google Patents

Contactor for connecting and disconnecting one or more electrical circuits

Info

Publication number
EP0116066A1
EP0116066A1 EP19830902542 EP83902542A EP0116066A1 EP 0116066 A1 EP0116066 A1 EP 0116066A1 EP 19830902542 EP19830902542 EP 19830902542 EP 83902542 A EP83902542 A EP 83902542A EP 0116066 A1 EP0116066 A1 EP 0116066A1
Authority
EP
European Patent Office
Prior art keywords
contactor
valve
electro
piston
contactors
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Withdrawn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
EP19830902542
Other languages
German (de)
French (fr)
Inventor
Jan-Erik Henriksen
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.)
HENRIKSEN JAN ERIK
Original Assignee
HENRIKSEN JAN ERIK
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 HENRIKSEN JAN ERIK filed Critical HENRIKSEN JAN ERIK
Publication of EP0116066A1 publication Critical patent/EP0116066A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/0206—Combined operation of electric switch and of fluid control device

Definitions

  • the present invention relates to contactors for connecting and disconnecting one or more electrical circuits.
  • an electromagnetic field is used which can be switched off without risk of damaging voltages.
  • a voltage of about 40 volts is normally supplied to a coil in said electro-magnet.
  • the contactor itself can be used for connecting and disconnecting dangerously high voltages.
  • Contactors of this type are readily available and are generally constructed of a stationary magnetic core and a coil cooperating therewith. The magnetic core and coil cooperate with a yoke which is movable to and from the core. The yoke can through its own movement in turn move a part containing a number of contacts which can be brought into or out of contact with contacts which are not movable like those following the movement of the yoke.
  • the object of the present invention is, in equipment containing both contactors and valves, to simplify those valves and contactors which shall be operated simultaneously, thus also making them less expensive. According to the invention, this is achieved by causing both contactor and valve(s) to cooperate with each other as a single unit, making use of either the contactor's or the valve's (valves') electro-magnetics. It should then be possible to simplify the unit further so that only one electro-magnet is used for both contactor and valve(s).
  • the electro-magnet of a contactor is used in the construction of a unit as mentioned above, said electro-magnet comprising a stationary core and solenoid inductor, and a movable yoke.
  • a space is provided in the magnetic core for each valve, so that each valve is activated by the magnetic field generated in the electro-magnet when a current passes through the solenoid inductor.
  • each valve when using the contactor's electro-magnet, is for each valve to have a piston movable in a sleevelike part, an aperture being provided in the magnetic core for each valve, Into which aperture a sleeve and piston is inserted. Each piston will then be located for the most part in the magnetic core. Each piston is spring-actuated and abuts a valve seat. When an electro-magnetic field is formed in the electro-magnet, each piston will assume a position In which it is not in contact with the valve seat.
  • each valve When the contactor's electro-magnet is used to set the valve, each valve can then be in the form of a plug-in unit. This also means that a valve can easily be replaced and a unit containing both contactor and one or more valves can be separated, the parts being caused to function individually, if each solenoid valve is provided with a solenoid inductor.
  • a piston and sleeve is used in the case of a solenoid valve, it is advisable for the piston and sleeve to constitute the part inserted into the contactor's electro-magnet and the other parts of the solenoid valve form a housing which is attached to the electro-magnet and is provided with a space in communication with the Inlet and outlet of the solenoid valve, the inlet of the space being in the form of a valve seat, the piston being brought into and out of contact therewith.
  • the operative end of the piston is then suitably provided with a washer or seal so that the valve seat is blocked when the piston is in position.
  • the magnetic field is utilized to set the valve in the contactor's electro-magnet.
  • Said electro-magnet also has a yoke which is movable to and from the magnetic core. Said movement of the yoke can also be utilized to mechanically influence a piston cooperating with a valve seat in the valve, thus replacing the setting of the magnetic field.
  • Figures 1 and 2 show a contactor with electro-magnetic setting in two positions, combined with a valve, also with two dif ferent setting positions, namely one in which the electro-magnet is disconnected (Fig.1) and one in which the electro-magnet is in function (Fig.2).
  • the contact 1 denotes a contactor which may be of any conventional type.
  • the contactor is combined with a solenoid valve 2, which may also be of conventional type.
  • the contact 1 has an electro-magnet 3 consisting of a vertically movable yoke part 4 and a stationary magnetic core 5.
  • the yoke part and the magnetic core are actuated by a spring arrangeme.t striving to separate the two parts 4 and 5.
  • the electro-magnet 3 has a solenoid 6 with connections 7 and 8 for producing a magnetic flux throu.h the two parts 4 and 5.
  • the yoke 4 has two outer legs 9 and 10 and an inner leg 11 . This is also the case with the magnetic core 5 which has two outer legs 12 and 13 and a leg 14 between them.
  • the legs 11 and 14 are opposite each other and are inserted into the central aperture of the coil.
  • the contactor is provided with a cover 41.
  • the movable yoke 4 is provided with a contact support 15 of insulating material, containing a number of spring-actuated contacts 16-23. Said contacts 16-23 cooperate with a group of other contacts, 24-29 . which are not movable.
  • the magnetic core 5 is provided with a cylindrical aperture for a rod 30, closed at Its upper end and provided with a flange 31 at its lower end.
  • the flange 31 cooperates with a central body 33 to form a space 34.
  • the piston is of ferro-magnetic material and cooperates with a spring 40 acting between the upper end of the piston and the internal surface formed by the end closure of the rod 30.
  • the grooves mentioned above are designed to prevent an air-pocket from being formed in the space containing the spring 40.
  • the lower end of the piston is preferably provided with a sealing disc or the like.
  • the central body 33 is provided with a first pipe end 35 and a second pipe end 36.
  • the pipe end 35 has a channel 37 constituting the inlet channel for a flowing medium and the pipe end 36 has a channel 39 constituting an outlet channel for flowing medium.
  • the inlet end of the channel 39 leads from the space 34 and the inlet end of the channel 37 is in the form of a valve seat 38 to cooperate with said piston 32.
  • the central body 33 is provided with suitable attachment means enabling the solenoid valve 2 to be easily removed and fitted to the electro-magnet 3 of the contactor 1.
  • the magnetic core 5 of the electro-magnet 3 can be provided with a number of apertures to receive a number of solenoid valves.
  • a certain magnetic remanence may remain. This is eliminated by providing the magnetic core 5 with a contact-closing coil. Such a coil may even be arranged in the yoke 4 and should also be arranged inside the rod 30 at its upper end.
  • the contactor 1 is provided with a plug-in unit 2 designed for insertion by a simple operation into a holder 3 for the purpose, the movable part 4 of the contactor, via an extension 5, in turn provided with a coupling part 6, coming into mechanical contact with the valve part 7 of the plug-in unit.
  • the construction can be varied with the contactor function for simultaneous opening or closing of the valve setting.
  • Figure 4 shows an embodiment for an arbitrarily pre-set time-delay of the opening or closing procedure with respect to the contactor setting.
  • a known pneumatic timer is described in the pamphlet for ASEA's product Sk 819013-A.

Abstract

Un appareil comprend à la fois des contacteurs (1) pour connecter et déconnecter des parcours électromagnétiques dans un circuit électrique ou plus et des soupapes à solénoïde (2) pour fermer et ouvrir le passage de milieux coulants, comme des milieux gazeux ou liquides. Les contacteurs (1) et les soupapes (2) sont montés de manière indépendante, même lorsqu'ils doivent être ajustés en même temps. Le but de l'invention est de combiner contacteurs (1) et soupapes (2) qui doivent être ajustés en même temps en une seule unité, utilisant un seul montage électromagnétique (4-13) pour les contacteurs (1) et les soupapes (2).An apparatus includes both contactors (1) for connecting and disconnecting electromagnetic paths in one or more electrical circuits and solenoid valves (2) for closing and opening the passage of flowing media, such as gaseous or liquid media. The contactors (1) and the valves (2) are mounted independently, even when they have to be adjusted at the same time. The object of the invention is to combine contactors (1) and valves (2) which must be adjusted at the same time in a single unit, using a single electromagnetic assembly (4-13) for the contactors (1) and the valves ( 2).

Description

Contactor for connecting and disconnecting one or more electrical circuits
The present invention relates to contactors for connecting and disconnecting one or more electrical circuits. For this purpose an electromagnetic field is used which can be switched off without risk of damaging voltages. A voltage of about 40 volts is normally supplied to a coil in said electro-magnet. The contactor itself can be used for connecting and disconnecting dangerously high voltages. Contactors of this type are readily available and are generally constructed of a stationary magnetic core and a coil cooperating therewith. The magnetic core and coil cooperate with a yoke which is movable to and from the core. The yoke can through its own movement in turn move a part containing a number of contacts which can be brought into or out of contact with contacts which are not movable like those following the movement of the yoke.
Contactors of the type described above are often included in equipment using one or more solenoid valves as well as an electro-magnet for their setting. Depending on their setting, said valves provide passage for a flowing medium, either gaseous of liquid or of some other consistency permitting flow. It is a distinct disadvantage that the valves and contactors must be fitted separately.
The object of the present invention is, in equipment containing both contactors and valves, to simplify those valves and contactors which shall be operated simultaneously, thus also making them less expensive. According to the invention, this is achieved by causing both contactor and valve(s) to cooperate with each other as a single unit, making use of either the contactor's or the valve's (valves') electro-magnetics. It should then be possible to simplify the unit further so that only one electro-magnet is used for both contactor and valve(s).
According to an advantageous embodiment of the present invention the electro-magnet of a contactor is used in the construction of a unit as mentioned above, said electro-magnet comprising a stationary core and solenoid inductor, and a movable yoke. A space is provided in the magnetic core for each valve, so that each valve is activated by the magnetic field generated in the electro-magnet when a current passes through the solenoid inductor.
The simplest solution, when using the contactor's electro-magnet, is for each valve to have a piston movable in a sleevelike part, an aperture being provided in the magnetic core for each valve, Into which aperture a sleeve and piston is inserted. Each piston will then be located for the most part in the magnetic core. Each piston is spring-actuated and abuts a valve seat. When an electro-magnetic field is formed in the electro-magnet, each piston will assume a position In which it is not in contact with the valve seat.
When the contactor's electro-magnet is used to set the valve, each valve can then be in the form of a plug-in unit. This also means that a valve can easily be replaced and a unit containing both contactor and one or more valves can be separated, the parts being caused to function individually, if each solenoid valve is provided with a solenoid inductor.
If a piston and sleeve is used in the case of a solenoid valve, it is advisable for the piston and sleeve to constitute the part inserted into the contactor's electro-magnet and the other parts of the solenoid valve form a housing which is attached to the electro-magnet and is provided with a space in communication with the Inlet and outlet of the solenoid valve, the inlet of the space being in the form of a valve seat, the piston being brought into and out of contact therewith. The operative end of the piston is then suitably provided with a washer or seal so that the valve seat is blocked when the piston is in position.
According to the above the magnetic field is utilized to set the valve in the contactor's electro-magnet. Said electro-magnet also has a yoke which is movable to and from the magnetic core. Said movement of the yoke can also be utilized to mechanically influence a piston cooperating with a valve seat in the valve, thus replacing the setting of the magnetic field. Further features of the present invention are revealed in the following claims.
The present invention is described in more detail with reference to the accompany two drawings in which
Figures 1 and 2 show a contactor with electro-magnetic setting in two positions, combined with a valve, also with two dif ferent setting positions, namely one in which the electro-magnet is disconnected (Fig.1) and one in which the electro-magnet is in function (Fig.2).
in the drawings 1 denotes a contactor which may be of any conventional type. The contactor is combined with a solenoid valve 2, which may also be of conventional type. The contact 1 has an electro-magnet 3 consisting of a vertically movable yoke part 4 and a stationary magnetic core 5. The yoke part and the magnetic core are actuated by a spring arrangeme.t striving to separate the two parts 4 and 5. The electro-magnet 3 has a solenoid 6 with connections 7 and 8 for producing a magnetic flux throu.h the two parts 4 and 5. The yoke 4 has two outer legs 9 and 10 and an inner leg 11 . This is also the case with the magnetic core 5 which has two outer legs 12 and 13 and a leg 14 between them. The legs 11 and 14 are opposite each other and are inserted into the central aperture of the coil. The contactor is provided with a cover 41. The movable yoke 4 is provided with a contact support 15 of insulating material, containing a number of spring-actuated contacts 16-23. Said contacts 16-23 cooperate with a group of other contacts, 24-29. which are not movable.
The magnetic core 5 is provided with a cylindrical aperture for a rod 30, closed at Its upper end and provided with a flange 31 at its lower end. The flange 31 cooperates with a central body 33 to form a space 34. In said space is a piston 32 of magnetic material, with axial, peripheral grooves. The piston is of ferro-magnetic material and cooperates with a spring 40 acting between the upper end of the piston and the internal surface formed by the end closure of the rod 30. The grooves mentioned above are designed to prevent an air-pocket from being formed in the space containing the spring 40. The lower end of the piston is preferably provided with a sealing disc or the like. The central body 33 is provided with a first pipe end 35 and a second pipe end 36. The pipe end 35 has a channel 37 constituting the inlet channel for a flowing medium and the pipe end 36 has a channel 39 constituting an outlet channel for flowing medium. The inlet end of the channel 39 leads from the space 34 and the inlet end of the channel 37 is in the form of a valve seat 38 to cooperate with said piston 32. The central body 33 is provided with suitable attachment means enabling the solenoid valve 2 to be easily removed and fitted to the electro-magnet 3 of the contactor 1.
It should be obvious that the magnetic core 5 of the electro-magnet 3 can be provided with a number of apertures to receive a number of solenoid valves.
The above illustrates extremely simply that by merely drilling holes and utilizing suitable attachment means, contactors of standard design can be combined with solenoid valves, also of standard design.
The combined unit described above, comprising contactor and solenoid valve, functions as follows. When no current is supplied to the solenoid inductor 6, the various parts of the unit will be In the positions shown in
Figure 1. The yoke with contact support 15 is in its upper position due to the action of springs, not shown. In this position, only contacts 20 and
26 are in connection with each other, and contact 18 with another contact, not shown. The other contacts are in their disconnected positions. Furthermore, piston 32 is pressed against the valve seat 38.
Contactor and solenoid valve can be brought into a second position, as shown in Figure 2. This occurs when the solenoid inductor 6 is excited. In this case the yoke 4 will be drawn to the magnetic core 5, against the action of the spring-means, not shown, thus disconnecting contacts 20-26 and connecting the other contacts. Due to the formation of a magnetic field in the electro-magnet 3, piston 32 will also be drawn into the electro-magnet 3, exposing the valve seat 38, whereupon medium flows from the valve seat in space 34 into channel 39.
Should it be desired to use contacts and solenoid valve separately, this can easily be arranged by pulling the solenoid valve out of the contactor and providing its cylindrical part with a solenoid.
In a contactor of the type described above a certain magnetic remanence may remain. This is eliminated by providing the magnetic core 5 with a contact-closing coil. Such a coil may even be arranged in the yoke 4 and should also be arranged inside the rod 30 at its upper end.
Description of plug-in unit.
The embodiment according to Figure 3 for simultaneous setting of contactor and valve function.
The contactor 1 is provided with a plug-in unit 2 designed for insertion by a simple operation into a holder 3 for the purpose, the movable part 4 of the contactor, via an extension 5, in turn provided with a coupling part 6, coming into mechanical contact with the valve part 7 of the plug-in unit.
The construction can be varied with the contactor function for simultaneous opening or closing of the valve setting.
Figure 4 shows an embodiment for an arbitrarily pre-set time-delay of the opening or closing procedure with respect to the contactor setting.
A pneumatic timer 1, normally used with contactors, is added here, which has a setting 2 for optional manual time-delay of the valve setting 3 combined with the function setting 4 for manual setting of delayed opening "position ö", delayed closing "position S", or both delayed opening and delayed closing "position B".
A known pneumatic timer is described in the pamphlet for ASEA's product Sk 819013-A. The product is known as Timer unit 0.1-30 sec. I.E.C. 337-1 (1970) Ui = 660 volt Ith = 10 A.
With the known timer, when the contactor is turned on, a delay can be achieved in the solenoid valve which is brought into either open or closed position. When the valve is turned off, switching is possible with or without delay. When the contactor is turned off, the solenoid valve can be caused to open or close immediately. A time delay may prevail in the latter case, when the contactor is turned off.

Claims

1. Contactor (1) for connecting and disconnecting one or more electrical circuits with the help of contacts (16-29) in two groups movable in relation to each other, movement of the groups being effected by means of an electro-magnetic field generated by a sole noid (6), characterised in that the electro-magnetic field or movement caused thereby is utilized to connect and disconnect one or more valves (2) for a flowing medium such as gaseous or liquid media.
2. Contactors according to claim 1, wherein the contactor (1) has a stationary magnetic core (5) and a solenoid inductor (6) cooperating with a movable yoke (4) of ferro-magnetic material and wherein each valve (2) is opened and closed by a piston (32) moving to and fro, characterised in that a space (34) for each valve (2) is provided in the stationary magnetic core (5) so that at least each piston (32) when activated performs its movement partially within the magnetic core (5).
3. Contactor according to claim 2, characterised in that each valve (2) is designed as a plug-in unit.
4. Contactor according to claim 1, characterised in that the movement effected in the contactor (1) is transmitted mechanically to said valve(s) (2) .
EP19830902542 1982-08-17 1983-08-04 Contactor for connecting and disconnecting one or more electrical circuits Withdrawn EP0116066A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8204726A SE8204726L (en) 1982-08-17 1982-08-17 CONNECTOR FOR CONNECTING AND DISCONNECTING ONE OR MORE ELECTRICAL CIRCUITS
SE8204726 1982-08-17

Publications (1)

Publication Number Publication Date
EP0116066A1 true EP0116066A1 (en) 1984-08-22

Family

ID=20347550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830902542 Withdrawn EP0116066A1 (en) 1982-08-17 1983-08-04 Contactor for connecting and disconnecting one or more electrical circuits

Country Status (4)

Country Link
EP (1) EP0116066A1 (en)
AU (1) AU1826183A (en)
SE (1) SE8204726L (en)
WO (1) WO1984000844A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1288149C (en) * 1987-09-21 1991-08-27 Frederick P. Fitzgerald Automatic control of work platforms

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1734258A (en) * 1927-08-05 1929-11-05 Kraft Lucas Gas-control valve
DE2452301A1 (en) * 1974-11-05 1976-05-06 Bosch Gmbh Robert ELECTRIC SOLENOID VALVE, IN PARTICULAR FOR INJECTION SYSTEMS OF COMBUSTION MACHINES
DE2909504A1 (en) * 1978-05-20 1980-09-18 Bosch Gmbh Robert MAGNETIC VALVE
DE2822142C2 (en) * 1978-05-20 1985-05-30 Robert Bosch Gmbh, 7000 Stuttgart magnetic valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8400844A1 *

Also Published As

Publication number Publication date
SE8204726D0 (en) 1982-08-17
WO1984000844A1 (en) 1984-03-01
AU1826183A (en) 1984-03-07
SE8204726L (en) 1984-02-18

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