US3727158A - Control apparatus equipped with a relay - Google Patents

Control apparatus equipped with a relay Download PDF

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Publication number
US3727158A
US3727158A US00161203A US3727158DA US3727158A US 3727158 A US3727158 A US 3727158A US 00161203 A US00161203 A US 00161203A US 3727158D A US3727158D A US 3727158DA US 3727158 A US3727158 A US 3727158A
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United States
Prior art keywords
transmission element
armature
relay
control apparatus
bank
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
Application number
US00161203A
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English (en)
Inventor
R Ludi
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LUDI R AG
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LUDI R AG
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Publication date
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays
    • F23N5/206—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays using electrical or electromechanical means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/643—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rotating or pivoting movement

Definitions

  • ABSTRACT A control apparatus equipped with a relay, especially for automatic firing installations, wherein the armature of the relay carries a transmission element which acts upon a bank of contacts.
  • the transmission element is pivotably supported at the armature and through the agency of a control or positioning element engaging with the transmission element is operatively connected with an actuation element serving for adjusting the transmission element.
  • the present invention relates to a new and improved control apparatus equipped with a relay, especially for automatic firing or furnace installations, wherein the armature of the relay carries a transmission element which acts upon a bank of contacts.
  • Another and more specific object of the present invention is to provide a new and improved control apparatus by means of which it is possible to coordinate at least two switching operations which are staggered in time for thepurpose of maintaining a proper sequential functional performance of such switching operations, without considerably altering the basic and simple construction of therelay.
  • a further significant object of this invention is to provide a novel construction of control apparatus equipped with a relay which considerably extends the economies of systems of this type.
  • the invention contemplates the provision of a novel control apparatus of the previously mentioned type which is manifested by the features that the transmission element is pivotably supported at the armature of the relay, and through the agency of a control or positioning element engaging with the transmissionelement is operatively connected with an actuation element serving for adjusting the transmission element.
  • the transmission element can assume two positions for instance. In one position of the transmission element the signal of the control circuit can be transmitted to the bank of contacts, whereas in the other position, even if there is present a signal of the control circuit, the contact bank is not actuated.
  • FIG. 1 is a perspective view of a schematically illustrated relay containing a control or positioning element in its rest position and engaging with the transmission element;
  • FIG. 2 illustrates the relay of FIG. 1 in its operating position, wherein the relay has responded after actuating the positioning element
  • FIG. 3 illustrates the relay of FIG. 1 wherein the positioning element has been actuated without response of the relay
  • FIG. 4 illustrates the relay of FIG. 1 wherein the relay has responded prior to actuation of the positioning or control element
  • FIG. 5 is a simplified circuit diagram of an automatic oilfiring installation utilizing the control apparatus of the invention.
  • FIG. 6 is a schematic illustration of the mechanical transmission elements of the automatic firing installation depicted in FIG. 5.
  • FIGS. 1 to 4 there is illustrated a preferred embodiment of the inventive control apparatus equipped with a relay, wherein there is illustrated a base 1 of optional design upon which there is mounted a relay F.
  • Relay F essentially consists of a coil 2, an armature 8, a bank of contacts 3 and a transmission element 4.
  • the armature 8 is designed as a lever member having the two legs or arms 8a and 8b, the arm 8b carrying at its end a knife edge bearing 13.
  • the transmission element 4 is pivotably supported by means of its knife edge 15 at the knife edge bearing 13.
  • Attached to the lever arm 8b of the movable armature 8 is a web or bracket 16 which is located above the knife edge bearing 13 and serves as a stop for a first position of the transmission element 4. In the rest position illustrated in FIG. I the transmission element 4 bears by means of its extension 18 against this web 16.
  • the bank of contacts 3 encompasses the actual contact 19 which is to be actuated by the transmission element 4 as well as the metallic blades or springs 20.
  • a positioning or control element 30 engages with the transmission element 4 of the relay F.
  • Positioning element 30 embodies flexed arm members 32 and 34 and is formed of a relatively thin spring wire. This spring wire, apart from the flexed arms 32, 34 further contains the two flexed loops or bends 40 and 41 arranged intermediate the arms 32 and 34 as shown.
  • Reference character 39 denotes the direction of movement of an actuation element B which operatively engages with the leg portion 32 of the positioning or control element 30 and which brings about a movement in the direction of the arrow 39' at the second leg portion or leg 34.
  • the positioning element 30 is mounted .at a bearing 37 of a sheet metal holder 38 or the like.
  • the one end of the leg portion 34 is disposed in a bore 42 of the transmission element 4, while a tension spring 44 engages at one end with the loop 41 of the first leg portion 32 of this positioning element 30, the
  • Spring 44 essentially corresponds to the elastic or spring restraint of a conventional relay, at which typically a spiral spring, connected at one end to the armature, and at the other end to the sheet metal angle member of the magnetic circuit, safeguards against the falling back of the armature into its rest position.
  • FIG. 1 the relay F and the actuation element B are shown in their rest position. If, as illustrated in FIG. 2, the actuation element B is actuated prior to the relay F then initially the transmission element 4 is brought into its second position, that is, is loweredinto the operable region of the contact bank 3 and then the armature 8 attracted, so that switching of the contacts results. This corresponds to the operational positionv of the ap- Although the transmission element 4i s lowered into the second position, still no'switching ofthecontacts occurs. This condition can be, for instance, realized by the actuation element 13 in that it moves further and triggers a further contact, so that for instance the installation is shut down and an alarm signal released. In FIG.
  • the relay F is shown in its operative position, withouthowever the transmission element 4 first having been actuated by the actuation element B, that is, lowered into the second position. Even if the actuation of the actuation element B is still initiated somewhat late the'conta'cts can no longer be actuated since the transmission element 4 is held inthe second position by a stop 43 at one of the metal blades or springs 20. On the other hand, the element B can move further since the legs 32 and 34 of the positioning element 30 are resilient and, as previously explained, can actuate a further contact which shuts down the installation.
  • the switch b is switched by the bimetallic thermo-element B and as a result the fuel valve V is opened. Now the ignition occurs. As a result the photocell FZ is energized and the photorelay F, corresponding to the relay of the embodiment of FIGS. 1 to 4, is attracted. As a result both switches f, and f are actuated. Now switch f takes over the control signal for the fuel valve V, instead of the switch b, as discussed above, and by means of the switch f the bimetallic thermo element B is switched off so that it can cool and the switch b is again placed into its starting position.
  • FIG. 5 there is illustrated in phantom or chain-dot lines the mechanical connections between the element B, relay F and the switches f, and f and indicated with the corresponding reference characters used in the arrangement of FIGS. 1 to 4.
  • FIG. 6 In order to preserve clarity in illustration the mechanical connections of the element B with the switches b, and b have been omitted, yet such can be seen by referring to FIG. 6.
  • FIG. 6 the same reference characters have been essentially used for the same or analogous components as considered above in conjunction with FIGS. 1 to 5.
  • the element B possesses a switching rod S by means of which it actuates the starting contact b and thereafter the positioning or control element 30.
  • a releasing pawl K serves for releasing the contact b after the element B has moved through a certain path of travel,'in the event that the switch f is not interrupted.
  • Owing to the arrangement of the positioning element 30 it is possible to store switching pulses at a relay and therefore to maintain a sequentially correct course of the functional operation.
  • actuating the positioning or control element 30 by means of a bimetallic element B it is also possible to carry out actuation by means of a synchronous motor or another electro mechanical or mechanical transmitter.
  • the transmission element 4 can also be constructed such that it can assume intermediate positions, with which certain contact banks are operatively associated, which can be optionally actuated so that more than two time staggered switching operations can be coordinated.
  • a control apparatus especially for automatic firing installations, comprising a relay and a mechanical actuating element, said relay having an armature, a bank of contacts and a transmission element carried and shifted by said armature and a bank of contacts operatively engaged by said transmission element, said transmission element being situated between said armature and said bank of contacts and being pivotably supported at the armature, said actuation element actuating a positioning element which is connected to the transmission element.
  • control apparatus as defined in claim 1, further including means defining an elastic restraint for said positioning element, said elastic restraint producing an elastic force by means of which said transmission element is supported at said armature.
  • control apparatus as defined in claim 1, especially for controlling automatic furnace firing installations, and wherein said actuation element comprises a bimetallic element of an automatic furnace firing installation which determines the pre-flushing and safety times during the heating-up period of the furnace installation.
  • a control apparatus especially for automatic firing installations, comprising a relay and a mechanical actuatin element, said relay having an armature, a bank 0 contacts and a transmission element carried and shifted by said armature and a bank of contacts operatively engaged by said transmission element, said transmission element being situated between said armature and said bank of contacts and being pivotably supported at the armature, said actuation element actuating a positioning element which is connected to the transmission element, means defining an elastic restraint for said positioning element, said positioning element being defined by an elastic angle lever having a pair of legs and mounted at a bearing means, the first leg of said elastic angle lever being mounted at said transmission element and the second leg being operably engageable with said actuation element, said elastic angle lever incorporating loop means at the region of said second leg, said elastic restraint engaging with said loop means at the region of said bearing means.

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  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Relay Circuits (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Binders And Loading Units For Sheaves (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Regulation And Control Of Combustion (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
US00161203A 1970-07-13 1971-07-09 Control apparatus equipped with a relay Expired - Lifetime US3727158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1060870A CH516221A (de) 1970-07-13 1970-07-13 Steuervorrichtung mit einem Relais

Publications (1)

Publication Number Publication Date
US3727158A true US3727158A (en) 1973-04-10

Family

ID=4365002

Family Applications (1)

Application Number Title Priority Date Filing Date
US00161203A Expired - Lifetime US3727158A (en) 1970-07-13 1971-07-09 Control apparatus equipped with a relay

Country Status (11)

Country Link
US (1) US3727158A (es)
AT (1) AT311472B (es)
CH (1) CH516221A (es)
DE (1) DE2134407C3 (es)
DK (1) DK142255B (es)
ES (1) ES199666Y (es)
FI (1) FI55919C (es)
FR (1) FR2098367B1 (es)
GB (1) GB1323406A (es)
NO (1) NO129972B (es)
SE (1) SE425615B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355292A (en) * 1980-03-11 1982-10-19 Satronic Ag Control device, particularly for automatic furnaces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567456A (en) * 1983-06-13 1986-01-28 Technology Research Corporation Resettable circuit closing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE680982C (de) * 1936-12-25 1939-09-11 Paul Firchow Nachfgr App Und U Elektromagnetischer Zeitfernschalter mit einem strombeheizten Zweimetall-Zeitelement
US2322792A (en) * 1940-06-22 1943-06-29 Perfex Corp Fuel burner system
US3551084A (en) * 1969-03-14 1970-12-29 James R Willson Electric ignition system having a ptc ignitor element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE680982C (de) * 1936-12-25 1939-09-11 Paul Firchow Nachfgr App Und U Elektromagnetischer Zeitfernschalter mit einem strombeheizten Zweimetall-Zeitelement
US2322792A (en) * 1940-06-22 1943-06-29 Perfex Corp Fuel burner system
US3551084A (en) * 1969-03-14 1970-12-29 James R Willson Electric ignition system having a ptc ignitor element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355292A (en) * 1980-03-11 1982-10-19 Satronic Ag Control device, particularly for automatic furnaces

Also Published As

Publication number Publication date
FI55919B (fi) 1979-06-29
ES199666Y (es) 1975-12-16
DK142255B (da) 1980-09-29
CH516221A (de) 1971-11-30
DE2134407C3 (de) 1974-03-14
ES199666U (es) 1975-08-01
DK142255C (es) 1981-02-23
DE2134407A1 (de) 1972-01-20
FR2098367A1 (es) 1972-03-10
GB1323406A (en) 1973-07-18
DE2134407B2 (de) 1973-08-02
NO129972B (es) 1974-06-17
AT311472B (de) 1973-11-26
FI55919C (fi) 1979-10-10
FR2098367B1 (es) 1976-07-23
SE425615B (sv) 1982-10-18

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