EP2742288B1 - Anordnung mit einem sicherheitsventil und einem verbindungsglied zur elektrischen verbindung eines thermoelements mit dem sicherheitsventil in einem gaskochfeld - Google Patents

Anordnung mit einem sicherheitsventil und einem verbindungsglied zur elektrischen verbindung eines thermoelements mit dem sicherheitsventil in einem gaskochfeld Download PDF

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Publication number
EP2742288B1
EP2742288B1 EP12762396.5A EP12762396A EP2742288B1 EP 2742288 B1 EP2742288 B1 EP 2742288B1 EP 12762396 A EP12762396 A EP 12762396A EP 2742288 B1 EP2742288 B1 EP 2742288B1
Authority
EP
European Patent Office
Prior art keywords
connector
insulating body
actuator
safety valve
thermocouple
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.)
Active
Application number
EP12762396.5A
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English (en)
French (fr)
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EP2742288A1 (de
Inventor
Wei Yu
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.)
Ningbo Bicai Industry Co Ltd
Whirlpool Corp
Original Assignee
Ningbo Bicai Industry Co Ltd
Whirlpool Corp
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.)
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Publication date
Application filed by Ningbo Bicai Industry Co Ltd, Whirlpool Corp filed Critical Ningbo Bicai Industry Co Ltd
Publication of EP2742288A1 publication Critical patent/EP2742288A1/de
Application granted granted Critical
Publication of EP2742288B1 publication Critical patent/EP2742288B1/de
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/107Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00Special features of, or arrangements for controlling combustion
    • F23N2900/05101Connections between thermocouple and magnetic valves, e.g. by plug and socket connectors

Definitions

  • the present invention relates to a system comprising a safety valve and a connector member for electrically connecting a thermocouple to the safety valve in a gas cooking hob, in accordance with the introduction to the main claim.
  • a gas cooking hob is known to present members for interrupting the gas flow to each burner when a burner flame is lacking (during use). These members comprise a thermocouple positioned at the burner to generate an electrical signal when it senses the flame. This signal is fed to an actuator (generally an electromagnetic actuator) of the gas safety valve in order to maintain this latter open and enable gas to flow to the burner while flame is present at said burner.
  • thermocouple no longer generates the electrical signal and the actuator, in the absence of this signal, closes the valve (which is opened by a usual knob positioned on the cooking hob).
  • a connector member comprising an insulating body supporting a first and a second electrical connector which cooperate with corresponding electrical connection elements of the thermocouple and with the valve actuator simultaneously. This enables the electrical signals generated by the thermocouple to be transferred to the actuator.
  • the electrical connectors of the connector member have defined positions within the insulating body: the first electrical connector is located in an axially more internal position than the second within said body, generally in a position close to or along the body axis.
  • the first electrical connector is completely contained within the insulating body, while the second electrical connector normally has an end which projects from said insulating body by jutting from a portion contained therein.
  • the first connector has an at least partially tubular shape and is usually arranged to cooperate at its first end with a pin of the actuator of the valve, the other or second end cooperating with a corresponding first connection element of the thermocouple.
  • the second electrical connector cooperates at a first end with a metal collar of the magnetic actuator and at its second end, projecting from the insulating body, with a second connection element of the thermocouple.
  • a connector member in which the insulating body supports internally the second electrical connector, which in this manner encloses it completely.
  • the first electrical connector is positioned within an axial seat of the insulating body.
  • a metal part or collar of the magnetic actuator becomes positioned between the insulating body and the second connector, such as to connect to this latter.
  • a male terminal of the actuator is instead connected to the first electrical connector positioned within the insulating body.
  • EP619460 to which reference should be made, also describes the safety valve actuator, which can be similar to that used in the present invention.
  • This solution which comprises a connector member provided with securely supported electrical connectors, has the advantage of enabling easy and quick connection to the valve actuator, but requires considerable care in its construction. In this respect, it must allow correct positioning of the actuator metal collar, between the insulating body and the second electrical connector, to avoid an electrical connection which is electrically unstable or which can fail with the passage of time due to oxidation of the contacting surfaces.
  • the second connector can in fact easily deform during connection, so loosening its mechanical connection and making the electrical connection with the actuator unstable.
  • WO2004/088205 describes instead a connector member in which the second electrical connector is removably coupled to the insulating body after the connection has been made between the connector member and the actuator.
  • This solution in which the electrical connectors are hence not securely coupled to the insulating body, overcomes the dimensional and tolerance problems in constructing the member described in EP619460 ; however it is more complex and fitting the connector member to the actuator takes more time time.
  • this solution comprises parts which are separate before utilization but which must always be ready for use; this involves a greater difficulty in handling and preparing the member under examination compared with the case of a corresponding member in which all the electrical connectors are securely associated with the insulating body.
  • An object of the present invention is to provide a connector or connection member for electrically connecting a thermocouple to an actuator of a safety valve in a gas cooking hob which represents an improvement with respect to known solutions.
  • thermo-electric protection assembly connection between a thermocouple and an electromagnetic valve, comprising an electrode (positive/male/plug) connector and an electromagnetic valve external connector, wherein the (positive/male/plug) electrode connector is plugged into an aperture of an external connector of the electromagnetic valve.
  • the present invention relates to a thermo-electric assembly protection connection, between the thermocouple and the electromagnetic valve in which the external diameter of the (positive/male) electrode connector is shorter than the bore diameter of the internal aperture of the electromagnetic valve external electrodes, in the range between 0.05 and 0.2 mm.
  • a particular object of the invention is to provide a connector member which is compact, is simple to handle and use while connecting to the thermocouple and the corresponding actuator, and which enables best utilization of the housing space provided for it in current cooking hobs (which are increasingly less deep).
  • Another object is to provide a connector member of the stated type which the electrical connection contacts achieved at the valve actuator are secure, such that these contacts cannot loosen with time because of the method used to couple the connector member to the actuator and/or because of temperature variations of the environment in which said member operates.
  • Another object is to provide a connector member of the stated type in which the electrical components are optimally protected (and better than in known solutions) from dust and from any other dirt which is able to arise in the cooking hob and reach the member.
  • a further object is to provide a connector member of the stated type which is of lower cost than known solutions.
  • a connector or connection member of the invention is indicated by 1. It presents a first end 3 arranged to cooperate with an actuator 15 (of known type, for example of electromagnetic type) for a gas safety valve 16 (also of known type and hence not described) of a gas cooking hob, and a second end 4 arranged to cooperate with corresponding electrical connection elements of a thermocouple (not shown).
  • the member comprises a body 2 of insulating material (of known type) presenting a central part 7 in which a through hole 6 is provided between said ends 3 and 4, preferably along its longitudinal axis W, an end 8 thereof being preferably of cylindrical shape at said first end 3.
  • a recess 9 is formed extending from the first end 3 to the second end 4 of the body 2 and preferably having a cross-section in the form of a portion of a circular sector.
  • the through hole 6 houses a first metal electrical connector 10, a second metal electrical connector 11 being positioned in the recess 9.
  • the first connector 10 is preferably completely contained in the central part of the body 2, whereas the second connector 11 projects via its second end 13 at least from the second end 4 of said body 2.
  • the second connector 11 also projects from the first end 3 of the body 2, as shown in Figure 4 .
  • the compact shape of the body 2 comprises an external portion 80 such as to completely or partially enclose the first and second connector with the exception of its second end 13, so protecting the connectors 10 and 11 at least when the connector member is connected to the actuator 15 of the gas safety valve 16 (see Figure 6 ).
  • the second connector 11 even though slightly projecting from the external portion 80 (visible in the detailed view of Figure 4 ), is virtually enclosed and protected by the body 2.
  • said external portion 80 presents incisions 70 enabling an elastic component to be introduced in coupling the connector member to the actuator 15, or enabling a polarized coupling with corresponding elements (not shown) present on the actuator 15.
  • the first electrical connector 10 presents a first end 20 and a second end 21 to be disposed in proximity to the corresponding ends 3 and 4 of the body 2.
  • the first end 20 of this first connector 10 is tubular and is arranged to cooperate with a pin 23 (or similar member) of the actuator 15 which, preferably, penetrates into the internal through hole 6 of the first connector 10 (see Figure 6 ).
  • Said first connector 10 presents projecting lateral lugs 25 acting as limit stops for the insertion of said connector into the through hole 6.
  • the lugs 25 are arranged to abuttingly cooperate against an internal annular step or groove 27 of said hole 6, to hence block insertion of the connector into it.
  • the second end 21 of the first electrical connector 10 is arranged to cooperate with a usual fixing member or cable terminal (not shown) of an electric cable which connects the connector under examination to a corresponding electrical connection element of the thermocouple (not shown).
  • This second end 21 is close to the second end 4 of the body 2, and is preferably inside this latter so as to be protected by it against impact or contact with any members positioned in the cooking hob in proximity to the valve 16.
  • the second electrical connector 11 has a first end (or portion for connection to the actuator) 30 close to said first end 3 of the body 2; from this first end 30 or connection portion there extends a portion or arm 32 terminating in a second end 13.
  • the first end or portion 30 is partly housed in a larger cross-section end part 35 of the recess 9, within the body 2; the arm 32 is positioned within a smaller cross-section part 36 of this recess 9 opening at the second end 13 of the second electrical connector 11, and preferably projects from this latter.
  • the first end 30 of the second connector 11 has a shape, also preferably cylindrical, which is open on one side (indicated by 30A in Figure 1 ) and is mounted on the corresponding end 8 of the body 2.
  • the coupling between the body 2 and the second connector 11 is facilitated by the cylindrical shape of the end of the body 2 and of the corresponding shape of the end 30 of the second connector 11.
  • the end 30 preferably presents an aperture on one side, advantageously a longitudinal slot (indicated by 30A in Figure 1 ) to enable it to be elastically coupled when mounted on the end 8.
  • first end 30 cooperates with an end annular portion 40 of the aperture 15 (of known type, shaped for example as a metal collar) which is disposed preferable about the connector 11 in that part of greater cross-section 35 of the recess 9 (see Figure 6 ) so as to be electrically in contact therewith.
  • end annular portion 40 of the aperture 15 of known type, shaped for example as a metal collar
  • the second end 13 of the connector 30 is arranged to cooperate with a cable terminal (or the like, not shown) positioned at the end of an electric cable (not shown) which connects the thermocouple to the member 1.
  • the invention offers a connector member 1 in which, under working conditions, the first end 30 of the second connector 11 is shaped such that, by physical contact, a stable electrical contact is formed with the actuator 15, i.e. when the member 1 is connected to the actuator 15 of the safety valve 16, the first end 30 of the second connector 11 disposed in contact with one end 8 of the insulating body 2 and lies in physical contact with the surface inside the metal collar 40 of the actuator 15, hence ensuring the connection and lasting stability of this contact.
  • the second electrical connector 11, except for its end 13 which has to suitably project from the insulating body 2, can be completely enclosed by said body 2.
  • the shape of the external portion 80 of the insulating body 2 can be such as to facilitate its grip and insertion during installation by the operator.
  • this member is compact, is easy to handle during its coupling to the thermocouple and the gas valve actuator 15, hence reducing the time of this operation, and is less costly than similar solutions of the state of the art.
  • thermocouple connector which also provides protection from the electrode oxidation.
  • this product takes the (positive/male/plug) electrode connector plugged into the electromagnetic valve external electrodes when the electromagnetic valve external electrodes have the established requirements, the external diameter of the positive electrode connector will be smaller.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Combustion (AREA)

Claims (10)

  1. System umfassend: ein Sicherheitsventil, ein Verbindungsglied (1) zur elektrischen Verbindung eines Thermoelementes mit dem Sicherheitsventil (16) eines Gaskochfeldes, wobei der Verbinder einen Isolierkörper (2) umfasst, der mit einem Stellglied (15) des Sicherheitsventils (16) verbunden ist, wobei der Isolierkörper (2) elektrische Verbinder (10, 11) trägt, um mit entsprechenden elektrischen Verbindungselementen des Thermoelementes verbunden zu werden und mit dem Stellglied (15) zusammenzuwirken, wobei der erste Verbinder (10) innerhalb des Körpers (2) angeordnet ist und der zweite Verbinder (11) einen Verbindungsabschnitt (30) aufweist, der einen elektrischen Kontakt mit dem Stellglied (15) herstellt, dadurch gekennzeichnet, dass der Verbindungsabschnitt (30) des zweiten Verbinders (11) an einem Ende (8) des Isolierkörpers (2) angeordnet ist und sich in physikalischem Kontakt mit einer Fläche innerhalb eines Metallkragens (40) des Stellglieds (15) befindet, wodurch die Verbindung und die Stabilität dieses Kontaktes sichergestellt wird.
  2. System nach Anspruch 1, dadurch gekennzeichnet, dass der Isolierkörper (2) eine Durchgangsbohrung (6), um den ersten elektrischen Verbinder (10) aufzunehmen, wobei die Bohrung vorzugsweise entlang der Längsachse (W) des Körpers (2) ausgebildet ist, und eine Vertiefung (9) umfasst, die auf einer Seite der Bohrung (6) ausgebildet und angeordnet ist, um den zweiten elektrischen Verbinder (11) aufzunehmen, wobei die Vertiefung einen Endteil (35) aufweist, um den zweiten Verbinder (11) aufzunehmen, wobei ein Ende (13) des zweiten Verbinders (11) von dem Isolierkörper (2) vorsteht.
  3. System nach Anspruch 2, dadurch gekennzeichnet, dass die Durchgangsbohrung (6) in einem zentralen Teil (7) des Isolierkörpers (2) vorgesehen ist, von dem aus sich das Ende (8) zylindrisch an dem ersten Ende (3) des Körpers um das zylindrische Ende (8) erstreckt, wobei der Verbindungsabschnitt oder das erste Ende (30) des zweiten Verbinders (11) zwischen diesem letzteren Abschnitt und dem Isolierkörper innerhalb des Endteils (35) der Vertiefung (9) positioniert ist, wobei ein ringförmiger Abschnitt (40) des Stellglieds (15) in Kontakt mit dem Verbindungsabschnitt (30) angeordnet ist.
  4. System nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Endteil (35) der Vertiefung (9) einen Querschnitt aufweist, der in Bezug auf einen kleineren Querschnittsteil (36) der Vertiefung vergrößert ist, um einen Abschnitt oder Arm (32) des zweiten Verbinders aufzunehmen, an dessen erstem Ende der Verbindungsabschnitt (30) positioniert ist und dessen zweites Ende (13) von einem zweiten Ende (4) des Isolierkörpers (2) vorsteht.
  5. System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Verbindungsabschnitt (30) in Längsrichtung auf einer Seite (30A) offen ist, um elastisch verformbar zu sein.
  6. System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der erste elektrische Verbinder (10) innerhalb der Durchgangsbohrung (6) positioniert ist, wobei der erste Verbinder (10) vorstehende seitliche Laschen (25) aufweist, die angeordnet sind, um mit einer inneren Stufe oder Nut (27) zusammenzuwirken und als ein Endanschlag für seine Einfügung in die Durchgangsbohrung (6) zu dienen.
  7. System nach Anspruch 6, dadurch gekennzeichnet, dass der erste Verbinder (10) ein erstes Ende (20), das angeordnet ist, um mit dem Stellglied (15) zusammenzuwirken, und ein zweites Ende (21) umfasst, das für eine Verbindung mit dem Thermoelement angeordnet ist, wobei das erste Ende (20) zylindrisch ist.
  8. System nach einem der vorstehenden Ansprüche, wobei während des Gebrauchs der Verbindungsabschnitt (30) des zweiten Verbinders (11) mit Ausnahme seines zweiten Endes (13) mittels eines externen Abschnitts (80) des Körpers (2) im Wesentlichen von dem Isolierkörper (2) umgeben ist.
  9. System nach Anspruch 8, wobei der externe Abschnitt (80) einen Schnitt (70) zum Einführen einer elastischen Komponente in die Kupplung des Elementes aufweist.
  10. System nach Anspruch 8 oder 9, wobei der externe Abschnitt (80) des Isolierkörpers (2) eine Form aufweist, um seinen Halt und seine Einfügung während einer Installation durch einen Bediener zu ermöglichen.
EP12762396.5A 2011-08-10 2012-08-02 Anordnung mit einem sicherheitsventil und einem verbindungsglied zur elektrischen verbindung eines thermoelements mit dem sicherheitsventil in einem gaskochfeld Active EP2742288B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201120289240XU CN202182238U (zh) 2011-08-10 2011-08-10 热电式熄火保护电磁阀与热电偶连接装置
PCT/IB2012/053959 WO2013021321A1 (en) 2011-08-10 2012-08-02 Connector member for electrically connecting a thermocouple to a safety valve in a gas cooking hob

Publications (2)

Publication Number Publication Date
EP2742288A1 EP2742288A1 (de) 2014-06-18
EP2742288B1 true EP2742288B1 (de) 2019-07-10

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Application Number Title Priority Date Filing Date
EP12762396.5A Active EP2742288B1 (de) 2011-08-10 2012-08-02 Anordnung mit einem sicherheitsventil und einem verbindungsglied zur elektrischen verbindung eines thermoelements mit dem sicherheitsventil in einem gaskochfeld

Country Status (3)

Country Link
EP (1) EP2742288B1 (de)
CN (1) CN202182238U (de)
WO (1) WO2013021321A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879558A (zh) * 2015-05-11 2015-09-02 奥可利电子(昆山)有限公司 一种双针电磁阀与热电偶的连接结构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1024395Y (es) 1993-03-31 1994-05-01 Orkli S Coop Ltda Acoplamiento coaxial de termopar al grupo magnetico que controla el paso de gas en quemadores.
EP0619450A1 (de) 1993-04-09 1994-10-12 The Boc Group, Inc. Gasgehäuse ohne Toträume
ITPD20020092A1 (it) * 2002-04-11 2003-10-13 Gasco Srl Dispositivo di sicurezza a termocoppia, particolarmente per bruciatori a gas.
ES1054376Y (es) * 2003-03-18 2004-02-16 Vicent Manuel Valls Termopar para electrovalvulas de quemadores de gas.
ITSV20030013A1 (it) 2003-03-31 2004-10-01 Cast Srl Spinotto di collegamento di una termocoppia ad un gruppo

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
WO2013021321A1 (en) 2013-02-14
EP2742288A1 (de) 2014-06-18
CN202182238U (zh) 2012-04-04

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