EP2390575A2 - Vanne de gaz dotée d'un élément d'actionnement pour un commutateur électrique - Google Patents

Vanne de gaz dotée d'un élément d'actionnement pour un commutateur électrique Download PDF

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Publication number
EP2390575A2
EP2390575A2 EP11166644A EP11166644A EP2390575A2 EP 2390575 A2 EP2390575 A2 EP 2390575A2 EP 11166644 A EP11166644 A EP 11166644A EP 11166644 A EP11166644 A EP 11166644A EP 2390575 A2 EP2390575 A2 EP 2390575A2
Authority
EP
European Patent Office
Prior art keywords
actuating
gas valve
actuating shaft
shaft
projection
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
EP11166644A
Other languages
German (de)
English (en)
Other versions
EP2390575A3 (fr
EP2390575B1 (fr
Inventor
Paulo Marcos Andrade Soares
Melca Gutierrez Humara
Emilio Placer Maruri
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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
Priority claimed from ES201030827A external-priority patent/ES2394699A2/es
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to EP11166644.2A priority Critical patent/EP2390575B1/fr
Publication of EP2390575A2 publication Critical patent/EP2390575A2/fr
Publication of EP2390575A3 publication Critical patent/EP2390575A3/fr
Application granted granted Critical
Publication of EP2390575B1 publication Critical patent/EP2390575B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges

Definitions

  • the invention relates to a gas valve with an actuating shaft which is rotatable about an axis for adjusting an opening cross-section of the gas valve and which is displaceable for actuating an electrical switch in the axial direction, wherein an actuating element is provided for the electrical switch, depending on the axial position the actuating shaft acts on a switching element of the electrical switch.
  • Gas valves are used in particular in gas-fired cooking appliances, such as cooktops, gas ovens or gas stoves.
  • the gas valve With the gas valve, the gas volume flow flowing to one or more gas burners of the cooking appliance is set between zero and a maximum value. This is done by rotating an actuating shaft of the gas valve, which is also referred to as a cock shaft, about its longitudinal axis.
  • the gas valve further comprises an electrical switch, which is actuated by pressing the actuating shaft in the axial direction.
  • the electrical switch is part of an ignition device for igniting the gas stream exiting at the gas burner. Every time a user presses the actuating shaft of the gas valve, the ignition device generates electrical sparks in the region of the gas burner.
  • a gas valve is for example in the EP 1 500 881 A2 described.
  • a disadvantage of these types of gas-fired cooking appliances is that the ignition can be done in any angular position of the actuating shaft. Since at the same time, however, the gas volume flow is adjusted by the angular position of the actuating shaft, this means that even with low gas flow rates of the electric switch is actuated. However, ignition can not be reliably ensured due to the low gas volume flow, so that it can come to a discharge of unburned gas from the gas burner.
  • the present invention is therefore based on the object to provide an ignition device for a gas valve with an actuating element, wherein the ignition device can be actuated only at defined operating conditions of the gas valve.
  • the invention is based on the finding that this object can be achieved by using an ignition system in which the actuating element and the switching element of the electrical switch can only come into contact with one another in a defined angular range of the actuating shaft.
  • a gas valve with an actuating shaft which is rotatable about an axis for adjusting an opening cross-section of the gas valve and which is displaceable for actuating an electrical switch in the axial direction, wherein an actuating element is provided for the electrical switch, in Depending on the axial position of the actuating shaft acts on a switching element of the electrical switch.
  • the gas valve is characterized in that the actuating element has a shape which deviates from a rotationally symmetrical shape at least at the outer edge.
  • the electrical switch of the gas valve is part of an ignition device.
  • the ignition device is understood to be a device by means of which a gas stream is ignited on the burner (s).
  • the ignition device preferably comprises at least one electrical switch for activating an ignition element, which generates ignition sparks.
  • the ignition device comprises an actuating shaft, which is displaceable for actuating the ignition device, in particular for the direct or indirect operation of the electrical switch along the longitudinal axis of the actuating shaft.
  • the switching element of the electrical switch is preferably adjacent to the actuating shaft and has a small width.
  • the switching element has a no contact surface, which does not completely surround the actuating shaft. Rather, the switching element is designed and arranged so that it engages only in a part of the angular range around the actuating shaft.
  • the actuator is mounted according to the invention on the actuating shaft.
  • the actuating element additionally has a shape which deviates from a rotationally symmetrical shape at least on the outer edge of the actuating element.
  • a contact between the actuating element and the switching element is required, thus the angular range of the actuating shaft, that is, the angular or rotational positions of the actuating shaft, in which an actuation of the electrical switch can be carried out limited.
  • This angular range is also referred to below as the ignition range.
  • the operation of the ignition device can be limited to situations in which the conditions in the gas valve provide sufficient safety.
  • the ignition range is selected so that in this area the gas volume flow in the gas valve to the burner is set to a maximum value. This ensures that sufficient gas is available for ignition by the electric spark on the burner. In the case of gas volume flows of lesser quantity, that is to say in other angular ranges of the actuating shaft, the actuating element can not come into contact with the switching element and actuations of the electrical switch and thus actuation or activation of the ignition device are thus prevented. However, since only a small amount of unburned gas exits the burner at this position of the actuating shaft, the danger to the user is minimized.
  • the operation of the electric switch detects the user by the sound of the ignition of the ignition element to the burner or by a haptic feedback, which is felt in the operation of the electric switch on the actuating shaft. If the user detects that no actuation of the electrical switch takes place, this will turn the actuating shaft until the ignition takes place. This prevents the user of the device with low gas flow rates unsuccessfully trying to trigger the ignition, resulting in an unwanted gas leakage.
  • the actuating element has an actuating projection which extends in the radial direction to the outside.
  • the radial direction is understood to be the direction in which the radius of the actuating shaft lies.
  • the actuating projection preferably covers only a small portion of the circumference of the actuating shaft. Particularly preferably, the projection covers a range of less than 90 °. As a result, the ignition range is minimized.
  • the ignition region would extend over the entire circumference of the disk except for the recess or slot, and the advantages attainable according to the present invention can therefore be achieved not or not sufficiently achieved.
  • the actuating element comprises a fastening element, preferably in the form of a fastening washer, for attachment to the actuating shaft.
  • the fastener may also have a different shape.
  • a fastening washer serves as a fastener, a sleeve which is attached to the actuating shaft and at the periphery of an actuating projection is provided.
  • the use of a fastening washer as a fastening element has the advantage that the switching element does not have to be provided in the immediate vicinity of the circumference of the actuating shaft.
  • the length of a radial actuating projection can be minimized or the actuating projection can be supported by the fastening disk by means of a fastening disk. By such a support, the transmission of a pressing force introduced into the operation shaft is reliably ensured by the operation projection on the switching element.
  • the radial actuating projection is arranged on the outer edge of the fastening disc.
  • the length of the actuating projection can be selected to be small, and thus bending of the actuating projection during the actuation of the switching element can be prevented.
  • the actuating projection on its underside at least one active surface for acting on the switching element of the electrical switch, which is inclined to the longitudinal axis of the actuating shaft.
  • the active surface is preferably at an angle to the longitudinal axis of the actuating shaft, which is in a range of 1 ° to 85 °, more preferably in the range of 30 ° to 60 °.
  • the side of the actuating projection is referred to, which is visible in a bottom view of the actuating projection.
  • the active surface is arranged so that its lower edge represents the lower edge of the actuating projection.
  • the active surface may thus according to the present invention also constitute a side surface or a part of a side surface of the actuating projection.
  • the active surface is inclined relative to the longitudinal axis of the actuating shaft, that the extension of the radius of the actuating shaft is parallel to the active surface.
  • the actuation of the electrical switch can be done in two ways. Firstly, the actuating shaft can first be rotated to an angular position in which the actuating projection is aligned vertically with the switching element. If in this state, the actuating shaft is moved in the direction of the gas valve, that is pressed in, the switching element is actuated by the actuating projection, in particular the lower edge of the actuating projection, and thus causes the activation of the ignition element and thus the ignition of the gas burner.
  • the actuation of the switch can also take place in such a way that the actuating shaft is first pressed in at an angular position in which the actuating projection is not aligned vertically with the switching element and only subsequently turned into the ignition region.
  • the active surface gets in contact with the switching element and the switching element slides on further rotation of the actuating shaft along the active surface along until it has reached the lower edge of the active surface and thus the lower edge of the actuating projection. Due to the inclination of the active surface, thereby the scarf element is moved or pivoted in the direction of the switch.
  • the electrical switch is actuated and the ignition takes place at the gas burner.
  • the switching path of the switching element can be set so that it corresponds to the vertical height of the active surface. In this case, the operation of the switch takes place only in the angular position in which the switching element is in contact with the lower edge of the actuating projection. Alternatively, it is also possible to choose the switching path of the switching element lower. In that case, the switching of the switch can already take place in an angular position of the actuating shaft, in which the upper side of the switching element is in contact with it at a position of the active surface which is higher than the lower edge of the active surface. As a result, the ignition range is increased.
  • the actuating projection on two active surfaces for selectively acting on the switching element of the electrical switch which lie on the underside of the actuating projection and together form a V-shape form.
  • the two active surfaces can abut each other at their lower edge.
  • a horizontal connection surface can also be provided between the lower edges of the active surfaces. This connection surface then also serves as an effective surface for acting on the switching element of the switch.
  • the switching element is in the form of a switching arm which extends beyond the housing of the switch.
  • a switching arm a longitudinally extending switching element is referred to, which leads by force application in the longitudinal direction for actuating the switch.
  • the switching arm can hereby be moved axially or pivoted.
  • the actuating element has a receiving opening for the actuating shaft and the receiving opening and the actuating shaft have at least partially a shape which deviates from a rotationally symmetrical shape.
  • the actuating shaft can be inserted into the actuating element. Since the shape of the receiving opening and of the actuating shaft deviate from a rotationally symmetrical shape at least in the region in which they are fastened to one another, these two components are secured against rotation to one another.
  • the shape of the receiving opening corresponds to the shape of the actuating shaft in the mounting area.
  • a flattening may be provided on the actuating shaft, which has a circular cross-section. A corresponding flattening is then also provided at the circular receiving opening.
  • the actuating element is preferably fastened to the actuating shaft via a groove in the actuating shaft.
  • the groove may be provided circumferentially on the actuating shaft.
  • an idle state of the gas valve preferably the lower edge of the actuating projection and the upper edge of the switching element of the electrical switch are spaced apart in the axial direction.
  • the state of the gas valve is referred to as idle state in which no forces, in particular no pressure forces, are exerted by the user on the actuating shaft from the outside.
  • This idle state is present, for example, during operation of the gas burner after ignition.
  • FIG. 1 an embodiment of the gas valve 1 according to the invention is shown.
  • the gas valve 1 has a main body 10, in which further components of the gas valve 1 can be accommodated.
  • a rotatable valve plug for adjusting the opening cross-section of the gas valve 1 and additionally a solenoid valve for safe complete closing of the gas valve 1 may be arranged.
  • gas is passed from the gas valve 1 to a burner, not shown.
  • an electrical switch 31 is arranged on the upper side of the main body 10 of the gas valve 1.
  • the electrical switch 31 serves in particular as an ignition switch for the gas valve 1.
  • an ignition element not shown, is activated, by means of which a burner (not shown) connected to the gas valve 1 is ignited.
  • a switching arm 311 Over the top of the housing of the electrical switch 31 projects in the illustrated embodiment, a switching arm 311 upwards.
  • an actuating shaft 30 is further guided, which projects beyond the electrical switch 31 upwards and extends into the main body 10 of the gas valve 1.
  • the cross section of the actuating shaft 30 deviates at least in the upper part of the round cross-section of the actuating shaft 30 over its further length.
  • a flattening 301 is provided on the actuating shaft 30.
  • an actuating element 32 is mounted above the electrical switch 31 at a distance from the top of the electrical switch 31.
  • the actuator 32 includes in the illustrated embodiment, a mounting washer 320 which extends radially from the actuating shaft 30 from.
  • an actuating projection 321 is provided in one place, which extends in the radial direction from the outer edge of the fixing plate 320 to the outside.
  • the operating projection 321 is mounted in the illustrated embodiment on a flange of the fixing disk 320, which projects downwardly on the outer circumference of the fixing disk 320.
  • a receiving opening 3202 for receiving or for the passage of the actuating shaft 30 is introduced.
  • the shape of the receiving opening 3202 corresponds to the shape of the cross section of the actuating shaft 30 in the upper region. This means that the receiving opening 3202 has a circular cross-section and a flattening 3203 is provided on one side. Due to the configuration of the actuating shaft 30 and the receiving opening 3202, the actuating element 32 is held against rotation on the actuating shaft 30, that is, can not rotate relative to the actuating shaft 30 about the longitudinal axis 300 of the actuating shaft 30.
  • the actuator 32 is attached to the actuating shaft 30, that these forces acting on the actuating shaft 30 in the direction of the longitudinal axis 300 of the actuating shaft 30 can transmit.
  • the fixing disc 320 rests on its underside on the shoulder in the actuating shaft 30, by means of which the flattening 301 is formed.
  • a circumferential groove 302 is provided on the actuating shaft 30 in a circumferential groove 302 at the receiving opening 3202 of the fixing disc 320 locking arms 3201 are provided which extend parallel to the longitudinal axis of the actuating shaft 30 and each having a latching nose 3205.
  • the locking lugs 3205 show after Inside, so that the mounting plate 320 can engage via the latching arms 3201 in the groove 302.
  • the latching arms 3201 extend downwardly from the mounting washer 320 at the receiving opening 3202. Slots 3204 are provided between the latching arms 3201, which allow a movement of the latching arms 3201, in particular a pressing apart of the Rastarem 3201 during insertion of the actuating shaft 30.
  • three latching arms 3201 are provided, which are provided in the region of the receiving opening 3202 in which this has a circular cross-section. In the region of the flattening 3203 in the receiving opening 3202 no locking arm is provided.
  • the actuating shaft 30 is mounted in the base body 10 of the gas valve 1, that it is rotatable about its longitudinal axis 300.
  • the actuating shaft 30 can be moved axially along its longitudinal axis 300, that is to be displaced.
  • a displacement of the actuating shaft 30 in the direction of the main body 10 of the gas valve 1 from a rest state or a rest position by applying a pressure on the actuating shaft 30 against the spring force of an inner valve spring (not shown) in the base body 10 of the gas valve 1.
  • This Movement is also referred to as pushing in the actuating shaft 30. If the pressure force is taken by the actuating shaft 30, the actuating shaft 30 therefore shifts back into the rest position.
  • the operating projection 321 which in the FIGS. 5 to 7 is shown in more detail, has on its underside two active surfaces 3211 and 3212.
  • the active surfaces 3211 and 3212 are aligned with each other so that they together form a V-shape.
  • the lower edges of the two active surfaces 3211 and 3212 lie on the lower edge of the actuating projection and are connected to each other via a narrow horizontal connecting surface.
  • the active surfaces 3211, 3212 form only the lower portion of the actuating projection 321. Above the active surfaces 3211, 3212 these go over in likewise inclined side surfaces.
  • the inclination of the side surfaces relative to the longitudinal axis 300 of the actuating shaft 30, however, is less than the inclination of the active surfaces 3211, 3212 relative to the longitudinal axis 300.
  • FIG. 1 and the sectional views of FIGS. 3 and 4 the gas valve is in the idle state.
  • the operating shaft 30 is not in the Primary body 10 of the gas valve 1 is pressed.
  • the lower edge of the operating projection 321 is at a vertical distance to the upper edge of the switching arm 311.
  • the actuating shaft 30 can be rotated by the entire angular range of 360 °, without causing the switch 31 to operate. If the actuating shaft 30 from the idle state in the angular position, in FIG.
  • the upper edge of the switching arm 311 slides along the active surface 3212 until it has reached the lower edge of the active surface 3212, which also simultaneously represents the lower edge of the actuating projection 321. Since the operating projection 321 is fixedly secured to the operating shaft 30 via the fixing disk 320, the switch arm 311 is thus pushed down or pivoted and operates the switch 31. This ignites the gas flowing out of the burner.
  • the active surfaces may also have an angle other than the angle to the longitudinal axis of the actuating shaft.
  • only an inclined active surface can be provided on the actuating projection.
  • the actuating projection it is also possible, although not preferred, for the actuating projection to have a rectangular cross section. In this case, the lower surface serves as an effective surface and an actuation of the switch is only possible if the actuating projection is aligned in front of pushing in the actuating shaft in the vertical direction with the switching arm.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Taps Or Cocks (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
EP11166644.2A 2010-05-24 2011-05-19 Vanne de gaz dotée d'un élément d'actionnement pour un commutateur électrique Not-in-force EP2390575B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11166644.2A EP2390575B1 (fr) 2010-05-24 2011-05-19 Vanne de gaz dotée d'un élément d'actionnement pour un commutateur électrique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10382139 2010-05-24
ES201030827A ES2394699A2 (es) 2010-05-24 2010-05-31 Valvula de gas con un elemento de accionamiento para un interruptor electrico
EP11166644.2A EP2390575B1 (fr) 2010-05-24 2011-05-19 Vanne de gaz dotée d'un élément d'actionnement pour un commutateur électrique

Publications (3)

Publication Number Publication Date
EP2390575A2 true EP2390575A2 (fr) 2011-11-30
EP2390575A3 EP2390575A3 (fr) 2013-01-09
EP2390575B1 EP2390575B1 (fr) 2018-01-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11166644.2A Not-in-force EP2390575B1 (fr) 2010-05-24 2011-05-19 Vanne de gaz dotée d'un élément d'actionnement pour un commutateur électrique

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EP (1) EP2390575B1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103195949A (zh) * 2013-05-02 2013-07-10 广西宜州市火焱节能科技有限公司 一种微流量液体阀门
WO2016050271A1 (fr) * 2014-09-30 2016-04-07 Arcelik Anonim Sirketi Dispositif de cuisson présentant un agencement de sécurité ayant un système d'éclairage interne
CN108150664A (zh) * 2018-01-31 2018-06-12 佛山市云米电器科技有限公司 一种增强远程关火安全性的机械阀
WO2019129405A1 (fr) 2017-12-25 2019-07-04 Arcelik Anonim Sirketi Plaque de cuisson comprenant une rondelle d'allumage
WO2019190424A3 (fr) * 2018-02-02 2019-12-12 Yesa Elektronik Sanayi Ve Ticaret Anonim Sirketi Chaine/harnais de commutateur imperméable aux liquides comprenant un câble
EP3772613A1 (fr) * 2019-08-06 2021-02-10 Ferel Elektronik Sanay Ticaret Anonim Sirketi Mécanisme de transmission pour commutateurs de bouton-poussoir

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500881A2 (fr) 2003-07-25 2005-01-26 ITW Industrial Components S.r.l. Dispositif intégré pour plaque de cuisson comprenant un robinet de gaz et un dispositif d'allumage

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Publication number Priority date Publication date Assignee Title
NL6903450A (fr) * 1969-03-06 1970-09-08
DE4041624A1 (de) * 1990-12-22 1992-07-02 Elektro Gas Armaturen Gashahn
IT248927Y1 (it) * 1999-03-08 2003-03-06 Merloni Elettrodomestici Spa Apparecchi di cottura domestici a gas con dispositivo di accensionea scintilla semplificato
ITTO20070306A1 (it) * 2007-05-04 2008-11-05 Itw Ind Components S R L Co N Dispositivo di comando includente un rubinetto gas ed un elemento di catenaria per bruciatori di un piano di cottura
ITTO20070638A1 (it) * 2007-09-11 2009-03-12 Itw Ind Components S R L Co N Dispositivo di comando rotante includente un rubinetto gas ed un elemento di catenaria per bruciatori di un piano di cottura

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500881A2 (fr) 2003-07-25 2005-01-26 ITW Industrial Components S.r.l. Dispositif intégré pour plaque de cuisson comprenant un robinet de gaz et un dispositif d'allumage

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103195949A (zh) * 2013-05-02 2013-07-10 广西宜州市火焱节能科技有限公司 一种微流量液体阀门
WO2016050271A1 (fr) * 2014-09-30 2016-04-07 Arcelik Anonim Sirketi Dispositif de cuisson présentant un agencement de sécurité ayant un système d'éclairage interne
WO2019129405A1 (fr) 2017-12-25 2019-07-04 Arcelik Anonim Sirketi Plaque de cuisson comprenant une rondelle d'allumage
CN108150664A (zh) * 2018-01-31 2018-06-12 佛山市云米电器科技有限公司 一种增强远程关火安全性的机械阀
CN108150664B (zh) * 2018-01-31 2024-04-26 佛山市云米电器科技有限公司 一种增强远程关火安全性的机械阀
WO2019190424A3 (fr) * 2018-02-02 2019-12-12 Yesa Elektronik Sanayi Ve Ticaret Anonim Sirketi Chaine/harnais de commutateur imperméable aux liquides comprenant un câble
EP3772613A1 (fr) * 2019-08-06 2021-02-10 Ferel Elektronik Sanay Ticaret Anonim Sirketi Mécanisme de transmission pour commutateurs de bouton-poussoir

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Publication number Publication date
EP2390575A3 (fr) 2013-01-09
EP2390575B1 (fr) 2018-01-03

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