EP3546831B1 - Gas cock with a safety valve for a gas cooking appliance, and gas cooking appliance incorporating said gas cock - Google Patents
Gas cock with a safety valve for a gas cooking appliance, and gas cooking appliance incorporating said gas cock Download PDFInfo
- Publication number
- EP3546831B1 EP3546831B1 EP18382208.9A EP18382208A EP3546831B1 EP 3546831 B1 EP3546831 B1 EP 3546831B1 EP 18382208 A EP18382208 A EP 18382208A EP 3546831 B1 EP3546831 B1 EP 3546831B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- main shaft
- shaft
- transmission shaft
- gas cock
- 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
Links
- 238000010411 cooking Methods 0.000 title claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 65
- 230000001105 regulatory effect Effects 0.000 claims description 26
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 107
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000003915 liquefied petroleum gas Substances 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/007—Regulating fuel supply using mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
- F23N5/107—Systems 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/16—Fuel valves variable flow or proportional valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/24—Valve details
Definitions
- the present invention relates to gas cocks with a safety valve for a gas cooking appliance, and to gas cooking appliances incorporating said gas cocks.
- Gas cocks with a safety valve for a gas cooking appliance are known.
- Said gas cock comprises a body comprising a gas inlet conduit and at least one gas outlet conduit, a regulating element suitable for regulating the incoming gas flow from the safety valve to the outlet conduit depending on the angular position thereof, the regulating element being arranged in a housing of the body fluidically communicated with the safety valve and with the outlet conduit, and a drive shaft comprising a manually operable main shaft, said main shaft being rotatable between an initial rotation position and a final rotation position, and axially movable for acting on a transmission element for opening the safety valve, the regulating element rotating integrally with said main shaft.
- gas cocks provided with a safety valve and which can be adapted to supply different types of gas.
- a gas cock is described in document WO 2012/080054 A2 , which discloses the preamble of claim 1.
- the object of the invention is to provide a gas cock with a safety valve for a gas cooking appliance, and a gas cooking appliance incorporating said gas cock, as defined in the claims.
- the gas cock of the invention comprises a body comprising a gas inlet conduit and at least one gas outlet conduit, a regulating element suitable for regulating the incoming gas flow from the safety valve to the outlet conduit depending on the angular position thereof, the regulating element being arranged in a housing of the body fluidically communicated with the safety valve and with the outlet conduit, and a drive shaft comprising a manually operable main shaft, said main shaft being rotatable between an initial rotation position and a final rotation position, and axially movable for acting on a transmission element for opening the safety valve, the regulating element rotating integrally with said main shaft.
- the regulating element is a rotating disk comprising at least one connection opening for regulating gas flow to the outlet conduit depending on the angular position thereof, said rotating disk being axially retained supported on a contact area of the housing of the body, the contact area comprising at least one outlet hole fluidically communicated with the gas outlet conduit, the rotating disk being configured for supplying different types of combustible gas depending on the angular positioning of said rotating disk with respect to the main shaft, and the drive shaft being configured for fixing the rotating disk in different angular positions with respect to the main shaft according to the type of combustible gas to be supplied.
- the regulating element for regulating the gas flow rate is a frustoconical part that is form-fitted into a chamber of the body of the gas cock.
- the regulating element sometimes seizes up when too much force is applied thereon by means of the manual drive shaft, and the gas passage may remain open, causing gas leak.
- the contact surface in the pushing direction of the drive shaft is reduced, and a possible gas leakage is prevented.
- the gas cock of the invention is suitable for supplying different types of gases without replacing or modifying the rotating disk but by simply positioning said rotating disk in different angular positions with respect to the main shaft of the drive shaft, depending on the type of gas to be supplied.
- the drive shaft is configured for changing the relative position of the rotating disk with respect to the main shaft of said drive shaft. It is therefore an easy-to-implement solution with very few parts needed to enable changing the supply gas, which allows reducing the costs of the valve.
- Figures 1 to 8 show an embodiment of the gas cock 100 with a safety valve 30 according to the invention, comprising a gas outlet conduit 12.
- the gas cock 100 comprises a body 10 comprising a gas inlet conduit 11 which is fluidically communicated with the safety valve 30, and the gas outlet conduit 12 suitable for conducting the incoming gas to a burner (not shown in the drawings).
- the gas cock 100 further comprises a regulating element suitable for regulating the incoming gas flow from the safety valve 30 to the outlet conduit 12 depending on the angular position thereof, the regulating element being arranged in a housing 51 of the body 10 which is fluidically communicated with the safety valve 30 and with the outlet conduit 12.
- the gas cock 100 also comprises a drive shaft 40 comprising a manually operable main shaft 41, said main shaft 41 being rotatable along an angular path A between an initial rotation position and a final rotation position, and axially movable for acting on a transmission element 70 for opening the safety valve 30, the regulating element rotating integrally with said main shaft 41.
- the regulating element is a rotating disk 20 comprising a connection opening 21 for regulating gas flow to the outlet conduit 12 depending on the angular position thereof.
- Said rotating disk 20 is axially retained supported on a contact area 52 of the housing 51 of the body 10, the contact area 52 comprising an outlet hole 53 which is fluidically communicated with the gas outlet conduit 12.
- the rotating disk 20 is configured for supplying different types of combustible gas depending on the angular positioning of said rotating disk 20 with respect to the main shaft 41, and the drive shaft 40 is configured for fixing the rotating disk 20 in different angular positions with respect to the main shaft 41 according to the type of combustible gas to be supplied.
- the drive shaft 40 also comprises a transmission shaft 46 which pushes the transmission element 70 when it is moved axially, the rotating disk 20 being coupled to the transmission shaft 46, and said transmission shaft 46 being coupled to the main shaft 41, the drive shaft 40 being configured for positioning the main shaft 41 in different angular positions with respect to the transmission shaft 46 depending on the type of gas to be supplied.
- the main shaft 41 comprises an end 43 to which there is coupled an outer knob (not depicted) that can be operated by the user, and another end 42 which is coupled with the transmission shaft 46.
- Said transmission shaft 46 comprises a lower end 48 acting on the transmission element 70, and an upper end 47 which is coupled with the end 42 of the main shaft 41.
- the lower end 48 of the transmission shaft 46 is arranged in the housing 51 when the drive shaft 40 is not axially pushed, and is coupled to the rotating disk 20 in a coupling hole 24 which is comprised in said rotating disk 20 and has a D shape in this embodiment. Said coupling hole 24 allows the axial movement of the transmission shaft 46 without axially moving the rotating disk 20.
- the rotating disk 20 is arranged facing the transmission element 70.
- the body 10 of the gas cock 100 comprises a through hole 14 which is communicated through one of its ends 15 with the housing 51, the transmission shaft 46 of the drive shaft 40 going through the through hole 14, said transmission shaft 46 being tightly fitted with possibility of rotation and axial movement in said through hole 14.
- the other end of the through hole 14 is communicated with a seat of the body 10, a gasket 80 being arranged on said seat surrounding the transmission shaft 46 and tightly fitted against the seat, assuring the leak-tightness between the two ends of the through hole 14 of the body 10.
- the contact area 52 on which the rotating disk 20 is supported comprises a flat support surface comprising a channel surrounding the outlet hole 53, a sealing gasket 57 being housed in said channel pressed against the support face of the rotating disk 20 when the rotating disk 20 is supported on the contact area 52. Gas flow towards the gas outlet conduit 12 is thereby regulated when the rotating disk 20 is rotated and when the connection opening 21 of the rotating disk 20 overlaps with the outlet hole 53.
- the gas cock 100 comprises a cover 60 attached to the body 10 closing, in a leak-tight manner, a chamber 50 formed by the housing 51 of the rotating disk 20 and a second housing 55 arranged in the cover 60.
- the chamber 50 is leak-tight because a sealing gasket 58 is arranged between the cover 60 and the body 10.
- the second housing 55 is communicated with the safety valve 30, the transmission element 70 which acts on the safety valve 30 being housed in the second housing 55.
- Said second housing 55 is separated in a leak-tight manner from the housing 51 by the rotating disk 20, and said second housing 55 is fluidically communicated with the safety valve 30.
- the transmission element 70 is a rocker arm
- the safety valve 30 comprises a shutter closing it, such that when the drive shaft 40 is pushed axially, the lower end 48 of the transmission shaft 46 presses the transmission element 70, and this transmission element acts on the shutter, opening the safety valve 30.
- the incoming gas can therefore go from the inlet conduit 11, through the safety valve 30, and to the second housing 55, the chamber 50 being leak-tight.
- the gas cock 100 comprises an attachment element 97 which, in this embodiment of the gas cock 100, is a screw.
- the main shaft 41 is hollow, comprising a through hole 98 open at its upper end 43 and lower end 42.
- the lower end 42 widens, generating an inner cavity 42c.
- the transmission shaft 46 comprises at its upper end 47 a widening, forming a head 47a, said head 47a comprising a threaded hole 47b in its upper portion facing the lower end 42 of the main shaft 41.
- the drive shaft 40 comprises a coupling unit 95 fixed to the lower end 42 of the main shaft 41.
- the coupling unit 95 comprises an annular central body comprising axially a central through hole 95a.
- An axial stud 98 that protrudes towards the transmission shaft 46 and a radial stud 99 that projects laterally project from the central body.
- the lower end 42 of the main shaft 41 comprises on the lower edge a first groove 42a and a second groove 42b which are arranged opposite one another in this embodiment, the radial stud 99 and the axial stud 98 being coupled, respectively, in said grooves 42a and 42b.
- the coupling unit 95 is therefore part of the main shaft 41, and they are riveted to assure the integral fixing thereof.
- the main shaft 41 is made of brass, and it can also be made of aluminum, and the coupling unit is made of steel.
- the main shaft comprises the stud and the radial stud at its lower end, the through hole of the main shaft being of such dimensions that it allows introduction of the attachment element from the opening of the through hole at the upper end of the main shaft.
- the head of the attachment element 97 is supported on the upper portion of the central body of the coupling unit 95, and the threaded body of said attachment element 97 goes through the through hole 95a, the attachment element 97 being screwed into the hole 47b of the transmission shaft 46.
- the gas cock 100 comprises a spring 94 which is arranged between a washer 96 and an abutment surface 47c of the transmission shaft 46, which is the lower portion of the head 47a.
- the washer 96 covers the seat on which the gasket 80 is arranged, being coupled in this embodiment to the transmission shaft 46 going therethrough.
- the spring 94 allows returning the transmission shaft 46, and along with said transmission shaft 46 the drive shaft 40, when the main shaft 41 and the transmission shaft 46 are coupled, to a standby position when it stops pushing said drive shaft 40, by means of the main shaft 41, for pushing the transmission element 70 and opening the safety valve 30.
- the transmission shaft 46 comprises in the head 47a a housing 49 which in this embodiment is a partial perimetral gap at the edge of the head 47a.
- This housing 49 has two stops 49 1 and 49 2 arranged at the ends defining two angular positions ⁇ 1 , ⁇ 2 , respectively.
- the axial stud 98 is arranged in the housing 49.
- the gas cock 100 is configured for natural gas by the axial stud 98 being arranged in the stop 49 1 , and configured for liquefied petroleum gas by the axial stud 98 being arranged in the stop 49 2 , so the main shaft 41 is positioned in different angular positions with respect to the transmission shaft 46, and therefore to the rotating disk 20 to which it is coupled.
- the end of the attachment element 97 is in contact with the hole 47b of the transmission shaft 46, without being fixed, and the axial stud 98 of the coupling unit 95 has a length such that said axial stud 98 is still arranged in the housing 49 of the transmission shaft 46, such that the main shaft 41 and the transmission shaft 46 are not separated from one another.
- the spring 94 of the gas cock 100 therefore pushes the transmission shaft 46, and the user first rotates the main shaft 41 with the suitable tool until the axial stud 98 abuts with one of the stops 49 1 and 49 2 corresponding with the supply gas, and then acts on the attachment element and fixes the main shaft 41 and the transmission shaft 46 in the defined position with the suitable tool.
- the drive shaft 40 To finish configuring the gas cock 100 to one of the supply gases, the drive shaft 40 must always be arranged in a reference position D1, such that when the main shaft 41 and the transmission shaft 46 are coupled, and the main shaft 41 angularly moved with respect to the transmission shaft 46, when the drive shaft 40 is brought to the reference position D1, the rotating disk 20 will be angularly moved at an angle equivalent to the angular difference between ⁇ 1 and ⁇ 2 between the two supply gases defined in this embodiment.
- the radial stud 99 is arranged in the reference position D1.
- this reference position D1 corresponds with the initial rotation position of the main shaft 41, although in other embodiments it may correspond with the final rotation position, for example.
- this initial rotation position of the main shaft 41 corresponds with the position with minimum gas flow, the final rotation position corresponding with the position with no gas flow.
- the gas cock 100 comprises a cap 90 which is fixed to the body 10 and with the main shaft 41 going through same, specifically in this embodiment of the gas cock 100 through the lower end 42 where the main shaft 41 widens forming the inner cavity 42c.
- This second chamber 91 is arranged opposite the chamber 50 in reference to the body 10 of the gas cock 100, and in the direction of the drive shaft 40, both chambers 50 and 42 being separated by the through hole 14 of the body 10.
- the cap 90 comprises therein a sliding surface for the radial stud 99, which is pushed against the cap 90 by means of the spring 94, and two stops 92 and 93 of the angular path A of the main shaft 41 between the initial rotation position and the final rotation position, the position of stop 92 corresponding to the reference position D1.
- the radial stud 99 is positioned in the stop 92.
- Figure 7 shows a perspective view of an embodiment of the rotating disk 20 with a connection opening 21 comprising ten holes 25 1 -25 10 , the hole of one end 25 10 having larger dimensions, and in terms of their diameter the holes being arranged such that a series of holes of different diameters are interposed within a series of holes increasing in size, in order to obtain a more regular gas flow in the outlet of the gas cock 100.
- This row of holes has a radial shape, such that to obtain the gas flow rate required in the gas outlet conduit 12, regulation is performed by overlapping a number of consecutive holes 25 1 -25 10 with the outlet hole 53, and the change in gas flow is performed by means of said overlapping holes 25 1 -25 10 leaving and entering the ends of the outlet hole 53 at the same time.
- Figures 9a to 9b show a sectional front view of the gas cock of Figure 1 , the rotating disk 20 being arranged in gas flow regulation positions for natural gas and liquefied petroleum gas, respectively, when the gas cock 100 is in the OFF position in which it does not supply any gas, such that the connection opening 21 of the rotating disk 20 does not overlap with the outlet hole 53 for any of the two gas supplies.
- Figures 10a to 10b show a sectional front view of the gas cock of Figure 1 , the rotating disk 20 being arranged in gas flow regulation positions for natural gas and liquefied petroleum gas, respectively, when the gas cock 100 is in the minimum MIN gas flow position, such that holes 25 1 -25 3 overlap with the outlet hole 53 when the gas cock 100 is configured for supplying natural gas, and only the hole 25 1 overlaps with the outlet hole 53 when the gas cock 100 is configured for supplying liquefied petroleum gas.
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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)
Description
- The present invention relates to gas cocks with a safety valve for a gas cooking appliance, and to gas cooking appliances incorporating said gas cocks.
- Gas cocks with a safety valve for a gas cooking appliance are known.
- Document
ES1087355U - Also known from the prior art are gas cocks provided with a safety valve and which can be adapted to supply different types of gas. For example, such a gas cock is described in document
WO 2012/080054 A2 , which discloses the preamble of claim 1. - The object of the invention is to provide a gas cock with a safety valve for a gas cooking appliance, and a gas cooking appliance incorporating said gas cock, as defined in the claims. The gas cock of the invention comprises a body comprising a gas inlet conduit and at least one gas outlet conduit, a regulating element suitable for regulating the incoming gas flow from the safety valve to the outlet conduit depending on the angular position thereof, the regulating element being arranged in a housing of the body fluidically communicated with the safety valve and with the outlet conduit, and a drive shaft comprising a manually operable main shaft, said main shaft being rotatable between an initial rotation position and a final rotation position, and axially movable for acting on a transmission element for opening the safety valve, the regulating element rotating integrally with said main shaft.
- The regulating element is a rotating disk comprising at least one connection opening for regulating gas flow to the outlet conduit depending on the angular position thereof, said rotating disk being axially retained supported on a contact area of the housing of the body, the contact area comprising at least one outlet hole fluidically communicated with the gas outlet conduit, the rotating disk being configured for supplying different types of combustible gas depending on the angular positioning of said rotating disk with respect to the main shaft, and the drive shaft being configured for fixing the rotating disk in different angular positions with respect to the main shaft according to the type of combustible gas to be supplied.
- In the gas cocks with a safety valve like the one known from document
ES1087355U - The gas cock of the invention is suitable for supplying different types of gases without replacing or modifying the rotating disk but by simply positioning said rotating disk in different angular positions with respect to the main shaft of the drive shaft, depending on the type of gas to be supplied. To that end, the drive shaft is configured for changing the relative position of the rotating disk with respect to the main shaft of said drive shaft. It is therefore an easy-to-implement solution with very few parts needed to enable changing the supply gas, which allows reducing the costs of the valve.
- These and other advantages and features of the invention will become evident in view of the drawings and detailed description of the invention.
-
-
Figure 1 shows a perspective view of an embodiment of the gas cock with a safety valve of the invention. -
Figure 2 shows a sectional perspective view of the gas cock ofFigure 1 , in which the main shaft and the transmission shaft are coupled. -
Figure 3 shows a sectional perspective view of the gas cock ofFigure 1 , in which the main shaft and the transmission shaft are not coupled. -
Figure 4 shows a perspective view of the main shaft of the gas cock ofFigure 1 . -
Figure 5 shows a perspective view of the transmission shaft of the gas cock ofFigure 1 . -
Figure 6 shows a perspective view of the coupling unit of the main shaft of the gas cock ofFigure 1 . -
Figure 7 shows a front view of an embodiment of the rotating disk of the gas cock ofFigure 1 , with a connection opening comprising a plurality of holes. -
Figure 8 shows a bottom perspective view of the cover of the gas cock ofFigure 1 . -
Figures 9a to 9b show a sectional front view of the gas cock ofFigure 1 , the rotating disk being arranged in gas flow regulation positions for natural gas and liquefied petroleum gas, respectively, when the gas cock is in the OFF position. -
Figures 10a to 10b show a sectional front view of the gas cock ofFigure 1 , the rotating disk being arranged in gas flow regulation positions for natural gas and liquefied petroleum gas, respectively, when the gas cock is in a minimum MIN position. -
Figures 1 to 8 show an embodiment of thegas cock 100 with asafety valve 30 according to the invention, comprising agas outlet conduit 12. - The
gas cock 100 comprises abody 10 comprising agas inlet conduit 11 which is fluidically communicated with thesafety valve 30, and the gas outlet conduit 12 suitable for conducting the incoming gas to a burner (not shown in the drawings). Thegas cock 100 further comprises a regulating element suitable for regulating the incoming gas flow from thesafety valve 30 to theoutlet conduit 12 depending on the angular position thereof, the regulating element being arranged in ahousing 51 of thebody 10 which is fluidically communicated with thesafety valve 30 and with theoutlet conduit 12. Thegas cock 100 also comprises adrive shaft 40 comprising a manually operablemain shaft 41, saidmain shaft 41 being rotatable along an angular path A between an initial rotation position and a final rotation position, and axially movable for acting on atransmission element 70 for opening thesafety valve 30, the regulating element rotating integrally with saidmain shaft 41. - In this embodiment, the regulating element is a rotating
disk 20 comprising a connection opening 21 for regulating gas flow to theoutlet conduit 12 depending on the angular position thereof. Said rotatingdisk 20 is axially retained supported on acontact area 52 of thehousing 51 of thebody 10, thecontact area 52 comprising anoutlet hole 53 which is fluidically communicated with thegas outlet conduit 12. The rotatingdisk 20 is configured for supplying different types of combustible gas depending on the angular positioning of said rotatingdisk 20 with respect to themain shaft 41, and thedrive shaft 40 is configured for fixing the rotatingdisk 20 in different angular positions with respect to themain shaft 41 according to the type of combustible gas to be supplied. - The
drive shaft 40 also comprises atransmission shaft 46 which pushes thetransmission element 70 when it is moved axially, the rotatingdisk 20 being coupled to thetransmission shaft 46, and saidtransmission shaft 46 being coupled to themain shaft 41, thedrive shaft 40 being configured for positioning themain shaft 41 in different angular positions with respect to thetransmission shaft 46 depending on the type of gas to be supplied. Themain shaft 41 comprises anend 43 to which there is coupled an outer knob (not depicted) that can be operated by the user, and anotherend 42 which is coupled with thetransmission shaft 46. Saidtransmission shaft 46 comprises alower end 48 acting on thetransmission element 70, and anupper end 47 which is coupled with theend 42 of themain shaft 41. Thelower end 48 of thetransmission shaft 46 is arranged in thehousing 51 when thedrive shaft 40 is not axially pushed, and is coupled to the rotatingdisk 20 in acoupling hole 24 which is comprised in said rotatingdisk 20 and has a D shape in this embodiment. Saidcoupling hole 24 allows the axial movement of thetransmission shaft 46 without axially moving the rotatingdisk 20. The rotatingdisk 20 is arranged facing thetransmission element 70. - The
body 10 of thegas cock 100 comprises a throughhole 14 which is communicated through one of itsends 15 with thehousing 51, thetransmission shaft 46 of thedrive shaft 40 going through the throughhole 14, saidtransmission shaft 46 being tightly fitted with possibility of rotation and axial movement in said throughhole 14. The other end of the throughhole 14 is communicated with a seat of thebody 10, agasket 80 being arranged on said seat surrounding thetransmission shaft 46 and tightly fitted against the seat, assuring the leak-tightness between the two ends of the throughhole 14 of thebody 10. - One face of the rotating
disk 20 is supported on thecontact area 52 of thehousing 51 of thebody 10. Thecontact area 52 on which the rotatingdisk 20 is supported comprises a flat support surface comprising a channel surrounding theoutlet hole 53, a sealinggasket 57 being housed in said channel pressed against the support face of the rotatingdisk 20 when the rotatingdisk 20 is supported on thecontact area 52. Gas flow towards thegas outlet conduit 12 is thereby regulated when the rotatingdisk 20 is rotated and when the connection opening 21 of the rotatingdisk 20 overlaps with theoutlet hole 53. - The
gas cock 100 comprises acover 60 attached to thebody 10 closing, in a leak-tight manner, achamber 50 formed by thehousing 51 of the rotatingdisk 20 and asecond housing 55 arranged in thecover 60. Thechamber 50 is leak-tight because a sealinggasket 58 is arranged between thecover 60 and thebody 10. Thesecond housing 55 is communicated with thesafety valve 30, thetransmission element 70 which acts on thesafety valve 30 being housed in thesecond housing 55. Saidsecond housing 55 is separated in a leak-tight manner from thehousing 51 by the rotatingdisk 20, and saidsecond housing 55 is fluidically communicated with thesafety valve 30. In this embodiment, thetransmission element 70 is a rocker arm, and thesafety valve 30 comprises a shutter closing it, such that when thedrive shaft 40 is pushed axially, thelower end 48 of thetransmission shaft 46 presses thetransmission element 70, and this transmission element acts on the shutter, opening thesafety valve 30. The incoming gas can therefore go from theinlet conduit 11, through thesafety valve 30, and to thesecond housing 55, thechamber 50 being leak-tight. - To couple the
main shaft 41 and thetransmission shaft 46 of thedrive shaft 40, thegas cock 100 comprises anattachment element 97 which, in this embodiment of thegas cock 100, is a screw. In this embodiment, themain shaft 41 is hollow, comprising a throughhole 98 open at itsupper end 43 andlower end 42. In this embodiment of themain shaft 41, the lower end 42widens, generating aninner cavity 42c. On the other hand, in this embodiment of thegas cock 100, thetransmission shaft 46 comprises at itsupper end 47 a widening, forming ahead 47a, saidhead 47a comprising a threadedhole 47b in its upper portion facing thelower end 42 of themain shaft 41. - In this embodiment of the
gas cock 100, thedrive shaft 40 comprises acoupling unit 95 fixed to thelower end 42 of themain shaft 41. In this embodiment, thecoupling unit 95 comprises an annular central body comprising axially a central throughhole 95a. Anaxial stud 98 that protrudes towards thetransmission shaft 46 and aradial stud 99 that projects laterally project from the central body. Thelower end 42 of themain shaft 41 comprises on the lower edge afirst groove 42a and asecond groove 42b which are arranged opposite one another in this embodiment, theradial stud 99 and theaxial stud 98 being coupled, respectively, in saidgrooves coupling unit 95 is therefore part of themain shaft 41, and they are riveted to assure the integral fixing thereof. To that end, in this embodiment themain shaft 41 is made of brass, and it can also be made of aluminum, and the coupling unit is made of steel. - To couple the
main shaft 41 and thetransmission shaft 46, before coupling thecoupling unit 95 to themain shaft 41, the head of theattachment element 97 is introduced in thecavity 42c of themain shaft 41, and thecoupling unit 95 and themain shaft 41 are then riveted. In other (not depicted) embodiments, the main shaft comprises the stud and the radial stud at its lower end, the through hole of the main shaft being of such dimensions that it allows introduction of the attachment element from the opening of the through hole at the upper end of the main shaft. The head of theattachment element 97 is supported on the upper portion of the central body of thecoupling unit 95, and the threaded body of saidattachment element 97 goes through the throughhole 95a, theattachment element 97 being screwed into thehole 47b of thetransmission shaft 46. - Similarly, to uncouple the
main shaft 41 and thetransmission shaft 46, theattachment element 97 is acted on whereby it is released, and to that end the user accesses the head of saidattachment element 97 with a suitable tool through the opening of the throughhole 44 of themain shaft 41 at itsupper end 43. Once theattachment element 97 has been released, thetransmission shaft 46 is axially moved downwards. Thegas cock 100 comprises aspring 94 which is arranged between awasher 96 and anabutment surface 47c of thetransmission shaft 46, which is the lower portion of thehead 47a. Thewasher 96 covers the seat on which thegasket 80 is arranged, being coupled in this embodiment to thetransmission shaft 46 going therethrough. Thespring 94 allows returning thetransmission shaft 46, and along with saidtransmission shaft 46 thedrive shaft 40, when themain shaft 41 and thetransmission shaft 46 are coupled, to a standby position when it stops pushing saiddrive shaft 40, by means of themain shaft 41, for pushing thetransmission element 70 and opening thesafety valve 30. - The
transmission shaft 46 comprises in thehead 47a a housing 49 which in this embodiment is a partial perimetral gap at the edge of thehead 47a. This housing 49 has two stops 491 and 492 arranged at the ends defining two angular positions α1, α2, respectively. When themain shaft 41 and thetransmission shaft 46 are coupled, theaxial stud 98 is arranged in the housing 49. Depending on the supply gas which, in this embodiment of thegas cock 100, consists of two gases, i.e., natural gas and liquefied petroleum gas, thegas cock 100 is configured for natural gas by theaxial stud 98 being arranged in the stop 491, and configured for liquefied petroleum gas by theaxial stud 98 being arranged in the stop 492, so themain shaft 41 is positioned in different angular positions with respect to thetransmission shaft 46, and therefore to therotating disk 20 to which it is coupled. - When the
main shaft 41 and thetransmission shaft 46 are uncoupled, the end of theattachment element 97 is in contact with thehole 47b of thetransmission shaft 46, without being fixed, and theaxial stud 98 of thecoupling unit 95 has a length such that saidaxial stud 98 is still arranged in the housing 49 of thetransmission shaft 46, such that themain shaft 41 and thetransmission shaft 46 are not separated from one another. Thespring 94 of thegas cock 100 therefore pushes thetransmission shaft 46, and the user first rotates themain shaft 41 with the suitable tool until theaxial stud 98 abuts with one of the stops 491 and 492 corresponding with the supply gas, and then acts on the attachment element and fixes themain shaft 41 and thetransmission shaft 46 in the defined position with the suitable tool. - To finish configuring the
gas cock 100 to one of the supply gases, thedrive shaft 40 must always be arranged in a reference position D1, such that when themain shaft 41 and thetransmission shaft 46 are coupled, and themain shaft 41 angularly moved with respect to thetransmission shaft 46, when thedrive shaft 40 is brought to the reference position D1, therotating disk 20 will be angularly moved at an angle equivalent to the angular difference between α1 and α2 between the two supply gases defined in this embodiment. To that end, theradial stud 99 is arranged in the reference position D1. In this embodiment of thegas cock 100, this reference position D1 corresponds with the initial rotation position of themain shaft 41, although in other embodiments it may correspond with the final rotation position, for example. In this embodiment, this initial rotation position of themain shaft 41 corresponds with the position with minimum gas flow, the final rotation position corresponding with the position with no gas flow. - The
gas cock 100 comprises acap 90 which is fixed to thebody 10 and with themain shaft 41 going through same, specifically in this embodiment of thegas cock 100 through thelower end 42 where themain shaft 41 widens forming theinner cavity 42c. There is formed between thewasher 96 and the cap 90 asecond chamber 91 inside which there is arranged thespring 94, thecoupling unit 95, and theupper end 47 of thetransmission shaft 46. Thissecond chamber 91 is arranged opposite thechamber 50 in reference to thebody 10 of thegas cock 100, and in the direction of thedrive shaft 40, bothchambers hole 14 of thebody 10. Thecap 90 comprises therein a sliding surface for theradial stud 99, which is pushed against thecap 90 by means of thespring 94, and twostops 92 and 93 of the angular path A of themain shaft 41 between the initial rotation position and the final rotation position, the position of stop 92 corresponding to the reference position D1. In this embodiment of thegas cock 100, theradial stud 99 is positioned in the stop 92. -
Figure 7 shows a perspective view of an embodiment of therotating disk 20 with aconnection opening 21 comprising ten holes 251-2510, the hole of one end 2510 having larger dimensions, and in terms of their diameter the holes being arranged such that a series of holes of different diameters are interposed within a series of holes increasing in size, in order to obtain a more regular gas flow in the outlet of thegas cock 100. This row of holes has a radial shape, such that to obtain the gas flow rate required in thegas outlet conduit 12, regulation is performed by overlapping a number of consecutive holes 251-2510 with theoutlet hole 53, and the change in gas flow is performed by means of said overlapping holes 251-2510 leaving and entering the ends of theoutlet hole 53 at the same time. -
Figures 9a to 9b show a sectional front view of the gas cock ofFigure 1 , therotating disk 20 being arranged in gas flow regulation positions for natural gas and liquefied petroleum gas, respectively, when thegas cock 100 is in the OFF position in which it does not supply any gas, such that the connection opening 21 of therotating disk 20 does not overlap with theoutlet hole 53 for any of the two gas supplies. -
Figures 10a to 10b show a sectional front view of the gas cock ofFigure 1 , therotating disk 20 being arranged in gas flow regulation positions for natural gas and liquefied petroleum gas, respectively, when thegas cock 100 is in the minimum MIN gas flow position, such that holes 251-253 overlap with theoutlet hole 53 when thegas cock 100 is configured for supplying natural gas, and only the hole 251 overlaps with theoutlet hole 53 when thegas cock 100 is configured for supplying liquefied petroleum gas.
Claims (14)
- Gas cock with a safety valve for a gas cooking appliance, comprising a body (10) comprising a gas inlet conduit (11) fluidically communicated with the safety valve (30), and at least one gas outlet conduit (12); a regulating element suitable for regulating the incoming gas flow from the safety valve (30) to the outlet conduit (12) from the safety valve (30) depending on the angular position thereof, the regulating element being arranged in a housing (51) of the body (10) fluidically communicated with the safety valve (30) and with the outlet conduit (12); and a drive shaft (40) comprising a manually operable main shaft (41), said main shaft (41) being rotatable between an initial rotation position and a final rotation position, and axially movable for acting on a transmission element (70) for opening the safety valve (30), the regulating element rotating integrally with said main shaft (41), characterised in that the regulating element is a rotating disk (20) comprising at least one connection opening (21) for regulating gas flow to the outlet conduit (12) depending on the angular position thereof, said rotating disk (20) being axially retained supported on a contact area (52) of the housing (51) of the body (10), the contact area (52) comprising at least one outlet hole (53) fluidically communicated with the gas outlet conduit (12), the rotating disk (20) being configured for supplying different types of combustible gas depending on the angular positioning of said rotating disk (20) with respect to the main shaft (41), and the drive shaft (40) being configured for fixing the rotating disk (20) in different angular positions with respect to the main shaft (41) according to the type of combustible gas to be supplied.
- Gas cock according to claim 1, wherein the drive shaft (40) comprises a transmission shaft (46) which pushes the transmission element (70) when it is moved axially, the rotating disk (20) being coupled to the transmission shaft (46), and said transmission shaft (46) being coupled to the main shaft (41), the drive shaft (40) being configured for positioning the main shaft (41) in different angular positions with respect to the transmission shaft (46) depending on the type of gas to be supplied.
- Gas cock according to claim 2, comprising an attachment element (97) fixing the main shaft (41) and the transmission shaft (46), where the main shaft (41) and the transmission shaft (46) can be uncoupled by acting on the attachment element (97), the transmission shaft (46) being axially moved when it is uncoupled from the main shaft (41), the attachment element (97) preferably being a screw.
- Gas cock according to claim 3, wherein the main shaft (41) comprises an axial through hole (44) that opens into a cavity (42c), and the transmission shaft (46) comprises an hole (47b), the attachment element (97) being arranged in the cavity (42c) and fixed in the hole (47b), said attachment element being able to be operated through the through hole (44) of the main shaft (41).
- Gas cock according to claim 4, wherein an axial stud (98) protrudes from the main shaft (41) towards the transmission shaft (46), the transmission shaft (46) comprising a housing (49) with at least two stops (491, 492) arranged in different angular positions (α1, α2), the stud (98) being coupled in the corresponding angular position (α1, α2) depending on the gas to be supplied.
- Gas cock according to claim 5, wherein the drive shaft (40) comprises a coupling unit (95) fixed to the main shaft (41), said coupling unit (95) comprising the axial stud (98), and said coupling unit (95) together with the cavity (42c) of the main shaft (41) demarcating a housing in which an operable end of the attachment element (97) is arranged, the coupling unit (95) comprising an axial through hole (95a) with the other end of the attachment element (97) going through same, said end being coupled to the transmission shaft (46).
- Gas cock according to claim 5 or 6, wherein the axial stud (98) has a length such that it is still arranged in the housing (49) when the transmission shaft (46) is uncoupled from the main shaft (41).
- Gas cock according to any of claims 5 to 7, wherein the coupling unit (95) comprises a radial stud (99) and the main shaft (41) comprises a first groove (42a) and a second groove (42b) in which the radial stud (99) and the axial stud (98) of the coupling unit (95) are coupled, respectively.
- Gas cock according to any of claims 5 to 9, wherein the rotating disk (20) is arranged in a different angular position depending on the gas to be supplied, when the stud (98) is coupled in the corresponding position (491, 492), and the radial stud (99) is arranged in a reference position (D1).
- Gas cock according to claim 9, wherein the reference position (D1) corresponds with the initial rotation position or the final rotation position of the main shaft (41), the initial rotation position of the main shaft (41) preferably corresponding with the position with minimum gas flow, and the final rotation position with the position with no gas flow.
- Gas cock according to claim 9 or 10, comprising a cover (90) which is fixed to the body (10) and with the main shaft (41) going through same, the cover (90) comprising therein two stops (92, 93) for stopping the main shaft (41) in the rotation thereof between the initial rotation position and the final rotation position, the position of one of said stops (92, 93) corresponding to the reference position (D1), the radial stud (99) of the main shaft (41) abutting with the stops (92, 93) in the rotation thereof.
- Gas cock according to any of claims 2 to 12, comprising a spring (94) which is arranged between a washer (96) and an abutment surface (47c) of the transmission shaft (46), said spring (94) returning the drive shaft (40) to a standby position when it stops pushing said drive shaft (40) for opening the safety valve (30).
- Gas cock according to any of the preceding claims, wherein the body (10) comprises a through hole (14) communicated through one of its ends with the housing (51), the drive shaft (40) going through the through hole (14) in a tightly fitted manner and with possibility of rotation, the other end of the through hole (14) being communicated with a seat comprising a gasket (80) which assures leak-tightness.
- Gas cooking appliance, characterised in that it comprises at least one gas cock according to any of the preceding claims.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES18382208T ES2828649T3 (en) | 2018-03-26 | 2018-03-26 | Gas tap with safety valve for a gas cooking appliance, and a gas cooking appliance incorporating said gas tap |
EP18382208.9A EP3546831B1 (en) | 2018-03-26 | 2018-03-26 | Gas cock with a safety valve for a gas cooking appliance, and gas cooking appliance incorporating said gas cock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18382208.9A EP3546831B1 (en) | 2018-03-26 | 2018-03-26 | Gas cock with a safety valve for a gas cooking appliance, and gas cooking appliance incorporating said gas cock |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3546831A1 EP3546831A1 (en) | 2019-10-02 |
EP3546831B1 true EP3546831B1 (en) | 2020-08-26 |
Family
ID=62027922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18382208.9A Active EP3546831B1 (en) | 2018-03-26 | 2018-03-26 | Gas cock with a safety valve for a gas cooking appliance, and gas cooking appliance incorporating said gas cock |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3546831B1 (en) |
ES (1) | ES2828649T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111734884B (en) * | 2020-06-30 | 2021-05-07 | 宁波方太厨具有限公司 | Kitchen range valve body |
CN111750168B (en) * | 2020-06-30 | 2021-05-07 | 宁波方太厨具有限公司 | Kitchen range valve body |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003513220A (en) * | 1999-11-02 | 2003-04-08 | フィッシャー アンド ペイケル アプライアンシズ リミティド | Gas valve |
RU2546345C2 (en) * | 2010-12-14 | 2015-04-10 | Бсх Бош Унд Сименс Хаусгерете Гмбх | Gas valve with system of stroke direction change |
JP5960573B2 (en) * | 2012-10-15 | 2016-08-02 | 株式会社ミクニ | Gas control valve and disk parts used therefor |
ES1087355Y (en) | 2013-07-29 | 2013-11-11 | Coprecitec Sl | Gas tap with safety valve for a gas cooking appliance |
ES2729233T3 (en) * | 2016-02-24 | 2019-10-31 | Copreci S Coop | Regulating valve for a gas cooking appliance and gas cooking appliance incorporating said regulating valve |
-
2018
- 2018-03-26 ES ES18382208T patent/ES2828649T3/en active Active
- 2018-03-26 EP EP18382208.9A patent/EP3546831B1/en active Active
Non-Patent Citations (1)
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Also Published As
Publication number | Publication date |
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EP3546831A1 (en) | 2019-10-02 |
ES2828649T3 (en) | 2021-05-27 |
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