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EP1672279B1 - Gashahn für einen Gasbrenner - Google Patents

Gashahn für einen Gasbrenner Download PDF

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Publication number
EP1672279B1
EP1672279B1 EP04380261A EP04380261A EP1672279B1 EP 1672279 B1 EP1672279 B1 EP 1672279B1 EP 04380261 A EP04380261 A EP 04380261A EP 04380261 A EP04380261 A EP 04380261A EP 1672279 B1 EP1672279 B1 EP 1672279B1
Authority
EP
European Patent Office
Prior art keywords
shaft
gas
regulation element
disposed
flow control
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
EP04380261A
Other languages
English (en)
French (fr)
Other versions
EP1672279A1 (de
Inventor
Amaia Salbide Mutiloa
Oscar Lajas Rueda
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.)
Coprecitec SL
Original Assignee
Coprecitec SL
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 Coprecitec SL filed Critical Coprecitec SL
Priority to AT04380261T priority Critical patent/ATE502256T1/de
Priority to EP04380261A priority patent/EP1672279B1/de
Priority to ES04380261T priority patent/ES2359975T3/es
Priority to DE602004031859T priority patent/DE602004031859D1/de
Publication of EP1672279A1 publication Critical patent/EP1672279A1/de
Application granted granted Critical
Publication of EP1672279B1 publication Critical patent/EP1672279B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00—Special features of, or arrangements for fuel supplies
    • F23K2900/05001—Control or safety devices in gaseous or liquid fuel supply lines

Definitions

  • This invention relates to a gas flow tap for a gas burner, and more particularly to a gas flow tap of the type that comprises a flow control member operated manually in order to control the flow of gas through the tap and a safety valve operated by an electromagnet fed by a thermocouple to keep the regulation element open only when the presence of a flame is detected.
  • a conventional gas tap comprises a member that defines an internal conduit from a gas inlet to a gas outlet, and a flow control member to control the flow of gas through said internal conduit.
  • This flow control member includes a rotatable member connected to a shaft that can be rotated manually by a user between closed and open positions. The flow of gas increases or decreases gradually as the flow control member is rotated and this can be disposed in any intermediate position in order to select the required gas flow.
  • gas taps of this type are applied to a gas conduit for a burner, and also incorporate a safety valve with a regulation element pushed by a spring to a closed position against a ring-shaped seating, and an electromagnet fed by a thermocouple to keep the regulation element in an open position thereby overriding the effect of said spring only while the presence of a flame in said burner is detected.
  • the aforementioned safety valve can be disposed either upstream or downstream of the flow control element although it is preferably positioned upstream for greater safety.
  • the regulation element of the safety valve In order to light the burner the regulation element of the safety valve must be opened manually to allow gas to flow to the burner and must be kept in the open position manually until the flame heats the thermocouple to feed the electromagnet.
  • a gas tap of the type described above which includes a spindle movable axially in a first direction parallel to the drive shaft of the flow control member, and substantially perpendicular to a second direction of displacement of the regulation element of the safety valve.
  • the drive shaft of the flow control member can also be moved axially manually, and a mechanism transmits its movement to said spindle in order to move it.
  • On one end of the spindle there is a conical configuration disposed in order to push an additional conical configuration positioned on one end of an intermediate member adapted to slide in said second direction and disposed in order to push the regulation element with its other end by contact with a central part on it thereby overriding the effect of the aforementioned spring.
  • This intermediate pusher member includes at least one longitudinal passageway to allow gas to flow through it.
  • Patent GB-A-2242257 describes a gas tap with a safety valve in which the drive shaft of the flow control member is movable axially in a first direction substantially perpendicular to a second direction in which the regulation element of the safety valve is moved.
  • This tap includes a movement transfer device based on an elastic member deformed by a displacement of said shaft in the first direction. This deformation causes the elastic member to lengthen in the aforementioned second direction thereby causing a displacement of the regulation element against the action of the corresponding spring.
  • the elastic member has one fixed end and another free end that moves in the second direction and in direct contact with the regulation element. Between both ends, the elastic member includes a zone adapted to be pressed and deformed by a displacement of the shaft.
  • a gas tap of the type described herein which includes a movement transfer device in which the regulation element of the safety valve is pushed by a displacement in the second direction of a sliding intermediate member which is pushed directly at the same time by an axial displacement in the first direction of the drive shaft of the flow control member or by a member in the movement transfer device in contact with the drive shaft of the control member.
  • EP-A-0486796 discloses a gas flow tap according to the preamble of claim 1.
  • This invention provides a gas flow tap for a gas burner, of the type that comprises a flow control member rotated by a shaft, which is also movable axially in a first direction through said flow control member; a safety valve disposed upstream or downstream of the flow control member, which includes a regulation element fitted onto a spindle movable axially in a second direction, different to the first, a first spring disposed to push said regulation element to a closed position against a ring-shaped seating, and an electromagnet adapted to be fed by a thermocouple to keep the regulation element in an open position thereby overriding the effect of said first spring; and a movement transfer device adapted to convert a displacement of said shaft in the aforementioned first direction into a displacement of the regulation element in the aforementioned second direction.
  • the inventive gas tap is characterised in that said movement transfer device comprises an intermediate member adapted to slide in the second direction, aligned with the spindle inside a conduit disposed downstream or upstream of said ring-shaped seating, with said intermediate member having a first end disposed to be pushed by the shaft or by a member in the movement transfer device in contact with the shaft, a second end disposed to push the regulation element by contact with a central part on it thereby overriding the effect of the aforementioned spring, and at least one longitudinal passageway to allow gas to flow through said conduit.
  • the movement transfer device comprises a first conical surface adapted to be pushed by the shaft against an inclined plane formed on said first end of the intermediate member.
  • the gas tap comprises a member 22 that defines an inlet 23 adapted for connection to a gas supply conduit (not shown) and linked to a cavity 25 that houses a safety valve 3.
  • the aforementioned connection between said inlet 23 and said cavity 25 is formed through a derivation that presents a opening 26 in the cavity 25.
  • the aforementioned cavity 25 is linked through a conduit 11 to a housing 24 that houses a flow control member 1.
  • the aforementioned housing 24 is connected to an outlet (not shown in the figures) adapted for connection to a gas supply conduit for a burner.
  • the gas circuit through the tap can be reversed, i.e. with the inlet 23 connected directly to the housing 24 of the flow control member 1, with this being connected downstream to the cavity 25 of the safety valve 3 through the conduit 10, and finally, with the cavity 25 being connected to the outlet without this altering the scope of the present invention.
  • the aforementioned flow control member 1 is connected to a shaft 2 oriented in a first direction (indicated by an arrow D1), in such a way that a manual rotating of the shaft 2 with a knob (not shown) causes the flow control member 1 to rotate and open and cut-off the gas flow and to control the flow of gas through the housing 24.
  • the aforementioned safety valve 3, which is disposed, in the drawing, upstream from the flow control member 1, includes a regulation element 4 fitted onto a spindle 5 that is movable axially in a second direction (indicated by an arrow D2), different to the first. In general, said second direction D2 is perpendicular to the first direction D1.
  • a first spring 6 is disposed in order to push said regulation element 4 to a closed position against a ring-shaped seating 9 disposed around the opening to the aforementioned conduit 11.
  • a thermocouple heated by the flame of the burner feeds an electromagnet 7 adapted to retain said retracted spindle so as to keep the regulation element 4 in an open position thereby overriding the effect of said first spring 6. If, for any reason the flame of the burner goes out, the thermocouple stops heating the electromagnet 7 and the spring 6 returns the regulation element 4 to the closed position against the ring-shaped seating 9, with the result that the flow of gas to the burner is interrupted even though the flow control member 1 is still be open.
  • the gas tap of the present invention includes a transfer movement device 40 adapted to convert a displacement of said shaft 2 in the first direction D1, to the inside of the member 22, into a displacement of the regulation element 4 in the second direction D2, to its open position.
  • the aforementioned movement transfer device 40 comprises an intermediate member 10 adapted to slide in the second direction D2, aligned with the spindle 5 of the regulation element 4, inside the aforementioned conduit 11, which, in this example, is disposed downstream of said ring-shaped seating 9 and upstream of the housing 24 of the flow control member 1.
  • the aforementioned intermediate member 10 has a first end 10a in which is formed an inclined plane 13 disposed to be pushed by the shaft 2, or preferably, by a first conical surface 12 connected to the shaft 2.
  • a second end 10b of the intermediate member 10 is disposed to push the regulation element 4 by contact with a central part on it through the ring-shaped seating 9 and against the elastic force of the first spring 6.
  • the intermediate member 10 also has at least one longitudinal passageway 10c to allow gas to flow through said conduit 11.
  • the intermediate member 10 has a three-armed star-shaped cross-section so that one of said passageways 10c is defined between each two arms.
  • a longitudinal projection 8, parallel to the second direction D2 is defined on the end of each arm of the intermediate member 10, and some grooves 27 are configured in the conduit 11 and act as guides for the projections 8 in order to allow the displacement of the intermediate member 10 and prevent it from rotating.
  • the inclined plane 13 remains in a suitable position in relation to said first conical surface 12.
  • the transfer movement device 40 comprises a rod 14 adapted to slide in the first direction D1, aligned with the shaft 2, inside a housing 15 formed through the flow control member 1.
  • the aforementioned rod 14 has a first end 14a disposed to be pushed by the second internal end 2b of the shaft 2 and a second end 14b to which said first conical surface 12 facing said inclined plane 13 is connected.
  • the first conical surface 12 could be formed directly on said second end 14b of the rod 14, in the example detailed in Figs. 1 and 1A the conical surface 12 is built into a piece 16 fixed to said second end 14b of the rod 14, and through said part 16 passageways 28 are formed to allow the gas to pass through to the inside of the flow control member 1.
  • the shaft 2 is partially introduced into the flow control member 1 and has a first external end 2a onto which a knob (not shown) and a second internal end 2b in contact with the first end 14a of the rod 14 are fitted. Between the flow control member 1 and the first end 14a of the rod 14 is disposed a second spring 17 to push the rod 14 and the shaft 2 to an inactive axial position, i.e. in a direction to the first external end 2a of the shaft 2.
  • the rod 14 and the shaft 2 form a single part, and the first conical surface 12 is connected to said second internal end 2b of the shaft 2, which projects from the innermost end of the flow control member 1.
  • the rod 14 and the shaft 2 are separate parts so that a suitable different material can be selected for each one.
  • shaft is used generically to refer to the unit formed by the shaft 2 and the rod 14, regardless of whether they form part of the same part or are separate parts.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Lift Valve (AREA)
  • Taps Or Cocks (AREA)

Claims (3)

  1. Gasflusshahn für einen Gasbrenner, welcher umfasst:
    - ein Durchflusssteuerungsglied (1), welches durch eine Achse (2) gedreht wird, wobei diese Achse (2) axial in eine erste Richtung (D1) durch dieses Durchflusssteuerungsglied (1) hindurch beweglich ist;
    - ein vor oder nach dem Durchflusssteuerungsglied (1) angeordnetes Sicherheitsventil (3) mit einem Regulierungselement (4) auf einer Spindel (5), das in eine zweite Richtung (D2), die anders ist als die erste Richtung, axial beweglich ist, eine erste Feder (6), die so angeordnet ist, dass sie dieses Regulierungselement (4) in eine geschlossene Stellung gegen eine ringförmige Sitzfläche (9) drückt, und einen Elektromagneten (7), der so angepasst ist, dass er über ein Thermoelement versorgt wird, um das Regulierungselement (4) in einer offenen Stellung zu halten und somit die Wirkung der erste Feder (6) auszuschalten; und
    - eine Vorrichtung zur Bewegungsübertragung (40), das so angepasst ist, dass es eine Verlagerung dieser Achse (2) in die oben genannte erste Richtung (DI) in eine Verschiebung des Regulierungselements (4) in die oben genannte zweite Richtung (D2) in seine offene Stellung umwandelt,
    wobei diese Vorrichtung zur Bewegungsübertragung (40) ein Zwischenglied (10) umfasst, das in der Lage ist, in die zweite Richtung (D2) zu gleiten, ausgerichtet an der Spindel (5) innerhalb eines Kanals (11), der vor oder nach der ringförmigen Sitzfläche (9) angeordnet ist, wobei ein erstes Ende (10a) dieses Zwischenglieds (10) so angeordnet ist, dass es von der Achse (2) oder von einem Glied der Vorrichtung zur Bewegungsübertragung (40) in Berührung mit der Achse (2) gedrückt werden kann, ein zweites Ende (10b) so, dass es das Regulierungselement (4) in Berührung mit einem mittleren Teil darauf drückt, was die Wirkung der ersten Feder (6) aufhebt, und mindestens ein Längsdurchgang (10c) vorhanden ist, der es dem Gas ermöglicht, durch diesen Kanal (11) zu strömen, wobei die Vorrichtung zur Bewegungsübertragung (40) außerdem eine erste kegelförmige Fläche (12) umfasst, die so ausgelegt ist, dass sie von der Achse (2) gegen das erste Ende (10a) des Zwischenglieds (10) gedrückt wird,
    dadurch gekennzeichnet, dass am ersten Ende (10a) eine schiefe Ebene (13) entsteht, an der die erste kegelförmige Fläche (12) gegen die Achse (2) gedrückt wird.
  2. Gasflusshahn gemäß Anspruch 1, wobei das Zwischenglied (10) einen dreiarmigen, sternförmigen Querschnitt aufweist, so dass einer der genannten Kanäle (10c) zwischen jeweils zwei Armen gebildet wird, eine Längsprojektion (8), parallel zur zweiten Richtung (D2), am Ende eines jeden Arms des Zwischenglieds (10) definiert wird, und Rillen (27) im Kanal (11) gebildet werden und als Führung für die Projektionen (8) dienen, um die Verschiebung des Zwischenglieds (10) zuzulassen und seine Drehung zu unterbinden.
  3. Gasflusshahn gemäß Anspruch 1 oder 2, wobei die Vorrichtung zur Bewegungsübertragung (40) eine Stange (14) umfasst, die so ausgelegt ist, dass sie in die erste Richtung (D1) gleiten kann, wobei diese Stange (14) ein erstes Ende (14a) besitzt, das so angeordnet ist, dass es von der Achse (2) gedrückt wird, und ein zweites Ende (14b), mit dem die erste kegelförmige Fläche (12), die gegen die schiefe Ebene (13) zeigt, verbunden ist, wobei die kegelförmige Fläche (12) in ein Teil (16) integriert ist, die am zweiten Ende (14b) der Stange (14) befestigt ist, und das Teil (16) Kanäle (28) umfasst, die es dem Gas ermöglichen, innen durch das Durchflusssteuerungsglied (1) zu strömen.
EP04380261A 2004-12-16 2004-12-16 Gashahn für einen Gasbrenner Expired - Lifetime EP1672279B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT04380261T ATE502256T1 (de) 2004-12-16 2004-12-16 Gashahn für einen gasbrenner
EP04380261A EP1672279B1 (de) 2004-12-16 2004-12-16 Gashahn für einen Gasbrenner
ES04380261T ES2359975T3 (es) 2004-12-16 2004-12-16 Grifo para conducción de gas a un quemador.
DE602004031859T DE602004031859D1 (de) 2004-12-16 2004-12-16 Gashahn für einen Gasbrenner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04380261A EP1672279B1 (de) 2004-12-16 2004-12-16 Gashahn für einen Gasbrenner

Publications (2)

Publication Number Publication Date
EP1672279A1 EP1672279A1 (de) 2006-06-21
EP1672279B1 true EP1672279B1 (de) 2011-03-16

Family

ID=34931885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04380261A Expired - Lifetime EP1672279B1 (de) 2004-12-16 2004-12-16 Gashahn für einen Gasbrenner

Country Status (4)

Country Link
EP (1) EP1672279B1 (de)
AT (1) ATE502256T1 (de)
DE (1) DE602004031859D1 (de)
ES (1) ES2359975T3 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR201007959A2 (tr) 2010-09-29 2012-04-24 Bsh Ev Aletleri̇ San. Ve Ti̇c. A.Ş. Hareketli gaz musluğu miline sahip bir pişirici cihaz
ES2403139B1 (es) * 2010-10-13 2014-05-08 BSH Electrodomésticos España S.A. Manguito interior de llave del gas
CN103547865B (zh) * 2010-12-14 2016-01-20 Bsh家用电器有限公司 具有行程偏转系统的燃气阀单元
WO2012080055A2 (de) * 2010-12-14 2012-06-21 BSH Bosch und Siemens Hausgeräte GmbH Gasventileinheit mit einer betätigungsmechanik für ein magnetventil
EP2873918A1 (de) * 2013-11-15 2015-05-20 Turas Gaz Armatürleri Sanayi. Ve Ticaret A.S. Stoßabsorptions in Taps mit Elektromagnet
EP2878891A1 (de) * 2013-12-02 2015-06-03 Turas Gaz Armatürleri Sanayi. Ve Ticaret A.S. Ein Elektromagnet mit stoßabsorbierender Feder
ES2734988T3 (es) 2013-12-24 2019-12-13 Bsh Hausgeraete Gmbh Un aparato de cocción que incluye un grifo de gas equipado con un dispositivo de retroalimentación táctil
ES2617202T3 (es) 2013-12-24 2017-06-15 BSH Hausgeräte GmbH Aparato para cocinar que incluye una llave de gas dotada de un dispositivo de realimentación táctil
EP3376064A1 (de) 2017-03-14 2018-09-19 Turas Gaz Armatürleri Sanayi. Ve Ticaret A.S. Shock absorber sicherheitsystem für thermostatische gasventile
EP3412971A1 (de) 2017-06-06 2018-12-12 TURAS GAZ ARMATÜRLERI SAN VE TIC A.s. Shock absorbing system für industrielle gasventile

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
CH275915A (de) * 1949-10-10 1951-06-15 Lengg Friedrich Absperrventil.
FR2565667B1 (fr) * 1984-06-06 1989-07-07 Madec Mater Robinet a gaz perfectionne pour l'alimentation d'un bruleur.
GB2196732B (en) 1986-10-29 1990-09-19 Ti New World Ltd Gaseous fuel flow control arrangements
FR2659130B1 (fr) 1990-03-05 1992-06-19 Sourdillon Sa Dispositif d'alimentation en gaz pour un bruleur a gaz, notamment pour appareil menager de type plat, equipe d'un organe de renvoi angulaire de mouvement.
IT220286Z2 (it) 1990-11-19 1993-09-15 Imit Rubinetto-gas con sicurezza modulare specie per piani di cottura di altezza limitata.
FR2712963B1 (fr) * 1993-11-24 1996-02-02 Sourdillon Sa Robinet de gaz avec soupape de sécurité, notamment pour appareil ménager de type plat.
ES1041705Y (es) * 1998-12-21 1999-12-16 Fagor S Coop Grifo de gas para cocinas con un accionamiento de la valvula de seguridad.
AUPQ214099A0 (en) * 1999-08-09 1999-09-02 Advanced Products Pty Ltd Gas control assembly

Also Published As

Publication number Publication date
EP1672279A1 (de) 2006-06-21
ATE502256T1 (de) 2011-04-15
ES2359975T3 (es) 2011-05-30
DE602004031859D1 (de) 2011-04-28

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