Regulating valve for gas cooker and gas cooker incorporating the regulating valve

Abstract

The present invention relates to a regulating valve for a gas cooker and a gas cooker incorporating the regulating valve. The regulating valve comprises: a body having at least one gas outlet pipe and a housing comprising at least one outlet hole in fluid communication with the outlet pipe; a turntable arranged in the housing; a spring axially retaining the turntable in the housing; and a sealing device surrounding at least one outlet hole. The sealing device comprises a gasket comprising: a closure member associated with and surrounding each outlet hole; and at least one attachment arm attached to the at least one closure member, the at least one attachment arm comprising at least one protrusion, wherein when the turntable is pressed on the gasket, the turntable is supported on the closure member and the protrusion.

Description

Technical Field

[0001] The invention relates to a regulating valve for a gas cooker and to a gas cooker combined with the regulating valve. Background Art

[0002] Regulating valves for gas cookers are known.

[0003] Document EP2299156A2 describes a regulating valve for a gas cooker, the regulating valve comprising: a valve body, the valve body comprising an inlet pipe for supplying gas, a gas outlet pipe and a housing connected to the inlet pipe and the outlet pipe; a turntable, the turntable is arranged on a contact surface of the housing in the housing of the valve body, the contact surface comprising an outlet hole connected to the outlet pipe fluid, the turntable is suitable for rotating relative to the contact surface and is suitable for adjusting the gas flow between the housing and the outlet pipe by the rotation of the turntable; a spring assembly, the spring assembly pushes the turntable and axially holds the turntable against the contact surface at one end thereof; and a gasket, the gasket is arranged to be accommodated on the contact surface around the outlet hole, and the turntable is supported on the gasket by pressing. In order to improve the seal, the spring assembly is arranged on the gasket, the spring assembly comprising a disc tensioning device and a coil spring.

[0004] WO2018 / 216044A1 describes a regulating valve for a gas cooker, the regulating valve comprising: a valve body, the valve body comprising an inlet pipe for supplying gas, a gas outlet pipe and a housing connected to the inlet pipe and the outlet pipe fluid; a turntable, the turntable is arranged on the contact surface of the housing in the housing of the valve body, the contact surface comprises an outlet hole connected to the outlet pipe fluid, the turntable is suitable for rotating relative to the contact surface and is suitable for adjusting the gas flow between the housing and the outlet pipe by the rotation of the turntable; a spring, the spring pushes the turntable and axially holds the turntable against the contact surface at one end thereof; and a gasket, the gasket is arranged to be accommodated on the contact surface around the outlet hole, and the turntable is supported on the gasket by pressing. Except for the opening corresponding to the outlet hole of the corresponding gas, the gasket of the regulating valve occupies the entire space of the contact surface of the housing of the valve body, and the turntable is supported on the surface of the gasket. Summary of the invention

[0005] The object of the present invention is to provide a regulating valve for a gas cooker and a gas cooker incorporating the regulating valve.

[0006] The regulating valve of the present invention comprises: a valve body, which comprises an inlet pipe for supplying gas, at least one gas outlet pipe and a housing portion connected to the inlet pipe and the outlet pipe fluid; a turntable, which is arranged on a contact surface of the housing portion in the housing portion of the valve body, the contact surface comprising at least one outlet hole connected to the outlet pipe fluid, the turntable being suitable for rotating relative to the contact surface and suitable for adjusting the gas flow between the housing portion and the outlet pipe by rotation of the turntable; at least one spring, which pushes the turntable and axially holds the turntable against the contact surface at one end thereof; and a sealing device, which is accommodated on the contact surface around the outlet hole, and the turntable is supported by a gasket in a press-like manner.

[0007] The sealing device includes a gasket, which includes: a closing member associated with each outlet hole, the closing member including a body with an opening surrounding the corresponding outlet hole; and at least one attachment arm attached to the closing member, the at least one attachment arm including at least one protrusion, wherein when the turntable is pressed on the gasket, the turntable is supported on the closing member and the protrusion.

[0008] In the prior art regulating valves, in order to ensure the seal between the rotary disk and the outlet opening, in particular when the regulating valve is in the closed position, the pressure exerted by the spring on the rotary disk in the closed contour of the gas outlet opening in the region above the gasket is increased by means of a device comprising a pressure disk and a spring, thereby increasing the complexity and cost of the valve. Alternatively, the surface of the gasket is also increased, thereby occupying the entire space of the contact surface of the housing of the valve body (where the rotary disk is arranged) (except for the opening corresponding to the outlet opening), wherein the rotary disk is supported on said surface of the gasket, in which case, considering that the surface of said gasket has been significantly increased, a spring with greater strength is required to obtain a suitable pressure on the gasket, thereby making the regulating valve more expensive.

[0009] In the gasket of the regulating valve of the present invention, since the turntable is supported on the gasket by pressing only on the closing member around the gas outlet hole and on the protrusion of the attachment arm, the pressure acting on the gasket in the closed contour of the outlet hole is increased, considering that the support surface of the turntable on the gasket has been greatly reduced. For the same spring, this can increase the pressure used to support the turntable on the gasket, thereby avoiding the need to tighten the disk with a specific additional spring and ensuring the sealing of the regulating valve in any rotational position of the turntable, and in particular in the closed position of the regulating valve. Similarly, for the same pressure as the pressure used on the gasket in the prior art, a spring of lower strength and therefore lower cost can be used. Considering that the gasket of the regulating valve of the present invention includes at least one attachment arm attached to the closing member, rather than occupying the entire space of the contact surface of the housing of the body of the regulating valve, this also allows the surface of the gasket to be reduced, thereby achieving a reduction in the cost of the gasket and, therefore, a reduction in the cost of the regulating valve.

[0010] Other advantages of the regulating valve of the present invention are that, by forming the supporting surface of the gasket by the protrusions of the closing member and the attachment arm, balance is maintained when the turntable is supported on the gasket, and the contact surface between the turntable and the gasket is minimized, so that when the turntable rotates to adjust the gas flow to the gas outlet pipe, the friction between the turntable and the gasket is minimized, and thus the wear between the turntable and the gasket is also minimized, thereby enabling the gasket to obtain a longer service life.

[0011] These and other advantages and features of the present invention will become apparent in view of the accompanying drawings and detailed description of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A perspective view of an embodiment of a regulating valve according to the present invention is shown, wherein the regulating valve has a safety valve, a gas outlet pipe and a bypass.

[0013] Figure 2 Shows Figure 1 Vertical longitudinal cross-section of a control valve.

[0014] Figure 3 Shows Figure 1 Detailed cross-sectional view of a receiving portion of a body of a regulating valve with a gasket.

[0015] Figure 4 Shows Figure 1 A detailed perspective view of the receiving portion of the main body of the regulating valve.

[0016] Figure 5 Shows Figure 1 A three-dimensional view of the gasket of a regulating valve.

[0017] Figure 6 Shows Figure 1A three-dimensional view of the turntable of the regulating valve.

[0018] Figure 7 Shows Figure 1 A three-dimensional view of the push plate of the regulating valve.

[0019] Figure 8 Shows Figure 1 A detailed three-dimensional view of a receiving portion of a main body of a regulating valve, wherein a gasket, a rotating disk, a push plate and a spring are assembled in the receiving portion.

[0020] Fig.9A Shows Figure 1 Detailed cross-sectional view of the receiving portion of the body of a regulating valve, wherein the closure member of the gasket is arranged around the outlet orifice, the regulating valve being in a gas flow closing position.

[0021] Fig. 9B Shows Figure 1 Detailed cross-sectional view of the receiving portion of the body of a regulating valve, wherein the closure member of the gasket is arranged around the outlet orifice, the regulating valve being in an open gas flow position.

[0022] Fig.10 A perspective view of a second embodiment of a regulating valve according to the present invention is shown, wherein the regulating valve has a safety valve and two gas outlet pipes.

[0023] Fig.11 Shows Fig.10 Another stereoscopic view of the regulating valve.

[0024] Fig.12 Shows Fig.10 A detailed perspective view of the receiving portion of the main body of the regulating valve.

[0025] Fig.13 Shows Fig.10 A three-dimensional view of the gasket of a regulating valve.

[0026] Fig.14 Shows Fig.10 A three-dimensional view of the turntable of the regulating valve.

[0027] Fig.15 Shows Fig.10 A three-dimensional view of the push plate of the regulating valve.

[0028] Fig.16 Shown with a gasket Fig.10 A detailed cross-sectional view of the receiving portion of the main body of the regulating valve.

[0029] Fig.17 Shown with a gasket Fig.10 Another detailed cross-sectional view of the receiving portion of the body of the regulating valve.

[0030] Fig.18 A perspective view of a third embodiment of a regulating valve according to the present invention is shown, wherein the regulating valve has a safety valve and three gas outlet pipes.

[0031] Fig.19 Shows Fig.18 Another stereoscopic view of the regulating valve.

[0032] Fig. 20 Shows Fig.18 A detailed perspective view of the receiving portion of the main body of the regulating valve.

[0033] Fig.21 Shows Fig.18 A three-dimensional view of the gasket of a regulating valve.

[0034] Fig. 22 Shows Fig.18 A three-dimensional view of the turntable of the regulating valve.

[0035] Fig.23 Shows Fig.18 A three-dimensional view of the push plate of the regulating valve.

[0036] Fig.24 Shows Fig.18 Detailed cross-sectional view of a receiving portion of a body of a regulating valve having a gasket.

[0037] Fig.25 Shows Fig.18 Another detailed cross-sectional view of the receiving portion of the body of a regulating valve having a gasket.

[0038] Fig.26 Shows Fig.18 Detailed cross-sectional view of a gasket of a regulating valve having a protrusion of an attachment arm and a closure body and a lower protrusion of the body of a closure member.

[0039] Fig. 27 A schematic diagram showing an embodiment of a gas cooker according to the present invention is shown. DETAILED DESCRIPTION

[0040] Figures 1 to 9B An embodiment of a regulating valve 100 for a gas cooker according to the present invention is shown, the regulating valve comprising a safety valve 30, a gas outlet pipe 12 and a minimum gas flow calibration bypass for changing the type of gas, the minimum gas flow calibration bypass being adjusted from the outside of the regulating valve 100 by a regulating device 5.

[0041] The regulating valve 100 comprises a valve body 10, the valve body 10 comprising a gas inlet pipe 11 for supplying gas, a gas outlet pipe 12 adapted to guide the incoming gas to a burner (not shown in the figure), and a housing 13 of the valve body 10 in fluid communication with the inlet pipe 11 and the outlet pipe 12. The regulating valve 100 further comprises a rotary disc 20 arranged on a contact surface 14 of the housing 13 in the housing 13 of the valve body 10, the contact surface 14 comprising two outlet holes 15a and 15b in fluid communication with the outlet pipe 12, the rotary disc 20 being adapted to rotate relative to the contact surface 14 and being adapted to adjust the gas flow between the housing 13 and the outlet pipe 12 by the rotation of the rotary disc 20. The regulating valve 100 further comprises: a spring 50, the spring 50 pushing the rotary disc 20 and axially holding the rotary disc against the contact surface 14; and a sealing device around the outlet holes 15a and 15b, the sealing device being accommodated on the contact surface 14, the rotary disc 20 being supported by the gasket 60 in a pressing manner.

[0042] The sealing device comprises a gasket 60, which comprises two closure members 70a and 70b respectively associated with each outlet hole 15a and 15b, each closure member 70a and 70b comprising a corresponding body 71a and 71b surrounding the outlet holes 15a and 15b, each body 71a and 71b comprising openings 72a and 72b respectively allowing the gas flow to flow to the outlet holes 15a and 15b. The gasket 60 also comprises two attachment arms 80a and 80b radially attaching the two closure members 70a and 70b, the radius of the attachment arm 80a being greater than the radius of the attachment arm 80b. The attachment arm 80a comprises two protrusions 81, so that the turntable 20 is supported on the support surfaces 73a and 73b of the bodies 71a and 71b of the closure members 70a and 70b, respectively, arranged in the upper part of the bodies 71a and 71b, and supported on the upper surface 82 of the protrusion 81, thereby pressing the gasket 60.

[0043] In this way, the gasket 60 in this embodiment of the regulating valve 100 has a circular shape, wherein the two attachment arms 80a and 80b surround the center of the gasket 60. In this embodiment of the regulating valve 100, the attachment arm 80a extends radially to the edge of the contact surface 14 in the receiving portion 13, so that the gasket 60 is stably arranged in the receiving portion 13 of the valve body 100. Furthermore, the attachment arm 80b tightly surrounds the drive shaft 40, and the combination of the attachment arms 80a and 80b improves the stability of the gasket 60. The protrusions 81 are arranged on the surface of the attachment arm 80a that contacts the rotating disk 20, and are radially arranged on the outer edge of the surface, centered on the center of the gasket 60, and the protrusions 81 are distributed at an angle of about 120° relative to each other.

[0044] In this way, the pressure on the gasket 60 is increased in the closed contour of the outlet orifices 15a and 15b, taking into account the significant reduction in the support surface of the regulating valve disc 20 on the gasket 60 relative to the gasket comprising the entire contact surface occupying the housing of the body of the regulating valve, and taking into account that the disc 20 is supported only on the closing members 70a and 70b of the gasket 60 and on the two protrusions 81 of the attachment arm 80a. Since the disc is supported on a smaller surface of the gasket, this allows the pressure for supporting the disc on the gasket to be increased using the same spring (with the same size and gas flow characteristics) as for the regulating valve of the prior art. In addition to being able to use a gasket with a smaller surface, it is possible to reduce the size of the spring and therefore the strength of the spring, thus reducing costs.

[0045] Furthermore, compared to the prior art regulating valve comprising a tensioning disk having a specific additional spring arranged on a rotating disk, although the size of the gasket is increased to a certain extent, at least the tensioning disk can be eliminated in the supporting area on the gasket corresponding to the outlet hole due to the greater pressure exerted on the gasket, so the overall cost is lower.

[0046] The solution defined in the regulating valve of the invention ensures sealing of the regulating valve in any rotational position of the rotary disk and in particular in the closed position of the regulating valve, due to the increased pressure exerted on the gasket for a spring of the same dimensions as used in the prior art.

[0047] The gas inlet pipe 11 of the regulating valve 100 is in fluid communication with the safety valve 30, and the rotary disk 20 is arranged in the housing 13 of the valve body 10, which in turn is in fluid communication with the safety valve 30 and the outlet pipe 12. In this embodiment of the regulating valve 100, the housing 13 of the valve body 10 is open outward. The regulating valve 100 includes a closing cover 3, which is attached to the valve body 10 and closes the housing 13 in a sealed manner. First, the gasket 60 is arranged in the housing 13 on the contact surface 14 of the housing 13, and then the face 22 of the rotary disk 20 is arranged to be supported on the gasket 60. Then, the spring 50 that pushes the rotary disk 20 and axially holds the rotary disk against the contact surface 14 is arranged to be supported on the rotary disk, thereby pressing on the gasket 60. The spring 50 is operatively supported at one end 51 on a face 23 of the turntable 20 opposite the face 22 , and is supported at a second end 52 opposite the end 51 on the closure cap 3 .

[0048] The regulating valve 100 further comprises a drive shaft 40, which is coupled to the rotating disk 20 at the lower end in the D-shaped hole 24 constituting the rotating disk 20, and comprises another upper end, at which a handle (not shown) that can be operated by a user is coupled. The drive shaft 40 can rotate between an initial rotation position and a final rotation position, and can also move axially to act on the transmission element 2 for opening the safety valve 30. The transmission element 2 is accommodated in the accommodation portion of the cover 4, which together with the accommodation portion 13 of the valve body 10 forms the closing cover 3. The transmission element 2 acts on the safety valve 30 in the accommodation portion of the cover 4. The accommodation portion of the cover 4 is in fluid communication with a hole (not shown in the figure) arranged in the valve body 10. The hole is in fluid communication with the safety valve 30. In this embodiment, the transmission element 2 is a rocker arm, and the safety valve 30 includes a gate that closes the safety valve 30, so that when the drive shaft 40 is pushed axially, the lower end portion coupled to the rotary disk 20 pushes the transmission element 2, and the transmission element 2 acts on the gate of the safety valve 30 through the hole of the valve body 10, thereby opening the safety valve 30. Therefore, the gas entering from the inlet pipe 11 can pass through the safety valve 30 and reach the receiving portion of the cover 3 through the opened gate, thereby occupying the receiving portion 13 of the valve body 10 where the rotary disk 20 is arranged.

[0049] In this embodiment, the rotary disk 20 includes a connection opening 21, which includes a plurality of through holes for adjusting the gas flow from the receiving portion 13 of the valve body 10 to the outlet pipe 12 according to the angular position of the rotary disk. The through holes of the connection opening 21 form radial rows, so that in order to obtain a required gas flow in the gas outlet pipe 12, a certain number of holes of the connection opening 21 of the rotary disk 20 overlap with the outlet hole 15a and / or the outlet hole 15b (which is the minimum gas flow hole). The gas flow is changed by overlapping and disjointing the through holes of the connection opening 21 with the outlet holes 15a and 15b.

[0050] The lower end of the drive shaft 40 is coupled to the rotary disk 20 in the coupling hole 24, which allows the axial movement of the drive shaft 40 without axially moving the rotary disk 20. Furthermore, the washer 60 allows the lower end of the drive shaft 40 to pass through the space left by the attachment arm 80b around the center of the washer 60. Finally, the lower end of the drive shaft 40 is accommodated in the accommodation portion 6 included in the valve body 10 on the contact surface 14 of the accommodation portion 13.

[0051] The regulating valve 100 includes a spring 44, one end of which is supported on the rib of the drive shaft 40 and the other end of which is operably supported on the valve body 10, and the function of the spring 44 is to return the drive shaft 40 to the standby position when the drive shaft 40 is no longer axially pushed to open the safety valve 30. The regulating valve 100 includes a cover 1, which allows the drive shaft 40 to pass through the cover 1 and closes the cavity formed between the cover 1 and the valve body 10, and the spring 44 is arranged in the cavity. The cover 1 of the regulating valve 100 includes a plurality of serial accommodation parts on one side arranged in the cavity of the spring 44, and the drive shaft 40 includes a pin 41 arranged in an orthogonal manner relative to the drive shaft 40, and the pin 41 is pushed against the accommodation part of the cover 1 by the action of the spring 44. In this manner, when the drive shaft 40 is rotated and disposed within a range of angular positions that define gas flow of the regulating valve 100, it defines discrete positions of different gas flow in the gas regulating valve that are distinguished audibly and / or tactilely by a user.

[0052] The contact surface 14 where the rotating disk 20 is located includes a minimum hole 15b, which is in fluid communication with a corresponding minimum gas pipeline (not shown in the figure). The minimum gas pipeline is in fluid communication with the gas outlet pipeline 12. The minimum gas flow of the regulating valve 100 is adjusted by rotating the rotating disk 20 and making a specific number of through holes of the connecting opening 21 overlap with the minimum hole 15b at a specific angular position of the rotating disk 20. In this embodiment, as shown in FIG. Figure 1 As shown, the regulating valve 100 comprises a regulating device 5 suitable for adjusting the minimum gas flow. In this embodiment of the regulating valve 100, the regulating device 5 is a screw comprising a calibrated hole defining the minimum gas flow to be adjusted in the regulating valve 100. The regulating device 5 is arranged in a pipe passing through the minimum gas pipe, and the pipe of the regulating device 5 is accessible from the outside of the regulating valve 100. With the help of a tool, the regulating device 5 can be turned so that the regulating device 5 moves axially, thereby allowing the passage of different minimum gas flows to be adjusted according to the position of the regulating device 5. With the help of the regulating device 5, the minimum gas flow in the regulating valve 100 is adjusted with higher precision.

[0053] In this embodiment of the regulating valve 100, a protrusion 81 extends from the surface of the attachment arm 80a toward the turntable 20, and the protrusion 81 has a semi-cylindrical shape arranged on the outer edge of the surface and defines a curved outer surface, whereby, when the turntable 20 is supported on the protrusion 81 of the attachment arm 80a and pressed on the gasket 60, when the turntable 20 rotates due to the action of the drive shaft 40, the curved outer surface presents a minimum contact surface with the face 22 of the turntable 20 and therefore presents a minimum friction surface.

[0054] Furthermore, the attachment arms 80a and 80b of the gasket 60 have a quadrilateral cross-section, thereby allowing uniform and extensive contact with the contact surface 14 of the accommodating portion 13 of the valve body 10, thereby allowing the gasket 60 to be seated very stably in the regulating valve 100 despite the thrust applied by the turntable 20 during rotation due to the action of the drive shaft 40.

[0055] Furthermore, the respective bodies 71a and 71b of the closure members 70a and 70b of the gasket 60 have a circular cross section, and the closure members 70a and 70b are configured as oval O-rings adapted to and surrounding the respective outlet holes 15a and 15b. As in the protrusion 81, the O-ring defines a curved outer surface, whereby, when the turntable 20 is supported on the bodies 71a and 71b of the closure members 70a and 70b and thus pressed on the gasket 60, when the turntable 20 rotates due to the action of the drive shaft 40, the curved outer surface presents a smaller and therefore lower friction contact surface with the face 22 of the turntable 20.

[0056] like Figure 4 As shown, the contact surface 14 of the housing 13 of the valve body 10 comprises a flat support surface on which a channel 16 having the shape of a gasket 60 is constructed and machined, the channel comprising different branches or arms extending on the contact surface 14, the attachment arms 80a and 80b of the gasket 60 and the closing members 70a and 70b being accommodated in the arms of the channel 16. The gasket 60 is accommodated in the channel 16 so that each attachment arm 80a and 80b and each closing member 70a and 70b is locked in the channel 16 in the wall forming each arm of the channel 16, the gasket 60 being pressed into the channel 16 due to the support of the rotary disk 20. Considering that each attachment arm 80a and 80b is accommodated in a branch of a channel 16 having side walls, but each radially opposite portion of the attachment arms 80a and 80b also abuts against the opposite wall of the channel 16, when the turntable 20 rotates, the channel 16 keeps the attachment arms 80a and 80b fixed, so this accommodation of the gasket 60 can also ensure the stability of the gasket 60.

[0057] In order to further ensure the seal in the outlet opening 15a of the main gas flow of the regulating valve 100 and to improve the gasket stability in the region of the closing members 70a and 70b of the gasket 60, as shown in FIG. Figure 3 , Fig.9A and Fig. 9BAs shown, the regulating valve 100 comprises a plastic bushing 17, which is arranged so that it is introduced into the outlet hole 15a. The bushing 17 is partially introduced into the outlet hole 15a, one end of the bushing 17 is supported on the internal seat of the valve body 10 in the outlet hole 15a, and a part of the bushing 17 protrudes from the outlet hole 15a, so that the body 71a of the closing member 70a of the gasket 60 is accommodated in the corresponding branch of the channel 16, thereby laterally abutting against the wall of the channel 16 itself and the protruding part of the bushing 17. Therefore, the body 71a is fixed in the channel 16, and the pressure of the rotary disk 20 on the body 71a is more effectively applied.

[0058] In this embodiment, if Figure 7 As shown, the regulating valve 100 further includes a push plate 90, which is supported on the rotating disk 20 occupying the entire surface thereof, and the end 51 of the spring 50 that pushes the rotating disk 20 is supported on one face of the push plate 90, while the other face of the push plate 90 is supported on the face 23 of the rotating disk 20. In this embodiment of the regulating valve 100, the spring 50 is a constant load spring, considering that the axis of the axial movement of the drive shaft 40 does not affect the axial movement of the rotating disk 20, and therefore does not affect the spring 50. The spring 50 keeps its pressure on the rotating disk 20 constant and does not rotate when the rotating disk 20 is angularly displaced.

[0059] The push plate 90 comprises a plurality of protrusions 91, specifically three in this embodiment, which allow the end 51 of the spring 50 to be coupled to the push plate 90, i.e. to be clamped to the protrusions 91. The protrusions 91 are arranged to form a circle, the center of which does not coincide with the center of the push plate 90 located at the center of the hole 96 allowing the drive shaft 40 to pass, the effect of which is defined below.

[0060] In this embodiment of the regulating valve 100, the push plate 90 has a circular shape, which is similar to the contact surface 14 of the rotating disk 20 and the receiving portion 13. The push plate 90 includes a plurality of protrusions 93 along the circular circumference of the edge 92, specifically three protrusions distributed on the edge 92 every 120° in this embodiment. The push plate 90 also includes a semicircular directional protrusion 94 arranged on the edge 92. For this part, the receiving portion 13 of the valve body 10 includes a circular side wall 18 that defines the boundary of the contact surface 14, and the wall 18 includes a semi-cylindrical receiving portion 19 (see Figure 4 ), when the push plate 90 is assembled on the turntable 20 in the receiving portion 13, the semi-cylindrical receiving portion 19 receives the directional protrusion 94 of the push plate 90. The push plate 90 is thus fixed in the receiving portion.

[0061] When the assembly is performed, the protrusion 93 of the push plate 90 is arranged to press on the side wall 18, especially for the operation of assembling the regulating valve 100, so that the push plate 90 is difficult to move out of the housing 13 and its position on the rotary disk 20. In order to improve the convenience of assembly and the service life of the push plate 90, the push plate 90 includes a plurality of through openings 95 arranged on the inner side of the push plate 90 facing each of the protrusions 93, specifically three through openings in this embodiment. The pressure exerted on the protrusion 93 of the push plate 90 by the side wall 18 of the housing 13 is therefore absorbed by the flexible openings 95. The push plate 90 also includes two through holes 97 and 98, which respectively provide a passage for the gas flow from the housing 13 through the connecting opening 21 of the rotary disk 20 to the outlet holes 15a and 15b.

[0062] In this embodiment of the regulating valve 100 including two outlet holes 15a and 15b, the outlet holes are adjacent and arranged close to the edge of the contact surface 14. Since the pressure operatively applied by the spring 50 on the gasket 60 (specifically on the closed area of ​​the gasket 60 formed by the closing members 70a and 70b) is relatively important, the spring 50 is arranged on the push plate, such as Figure 8 As shown, it is clamped to the protrusion 93 and eccentric relative to the center of the rotating disk 20 and the center of the push plate 90, so that in this embodiment of the regulating valve 100, the axial projection of the spring 50 above the gasket 60 partially passes over the main bodies 71a and 71b of the corresponding closure members 70a and 70b. Since the size of the regulating valve 100 is smaller than that of other valves with a greater number of gas outlet pipes, and due to the arrangement of the corresponding outlet holes 15a and 15b on the contact surface 14, in the regulating valve 100, one spring 50 is sufficient to ensure sealing, especially sealing in the closed position of the regulating valve 100.

[0063] Figures 10 to 17 A second embodiment of a regulating valve 100' for a gas cooker according to the present invention is shown, the regulating valve comprising a safety valve 30 and two gas outlet pipes 12a and 12b. The regulating valve 100' comprises the same features as the embodiment of the regulating valve 100, except that, on the contact surface 14 of the receiving portion 13 of the valve body 10, the regulating valve 100' comprises two outlet holes 15a and 15b that are fluidly connected to the two gas outlet pipes 12a and 12b in a corresponding manner, in which the outlet holes 15a and 15b are two holes for the main gas flow rather than for the minimum flow specifically with a bypass. The gas outlet pipes 12a and 12b are suitable for guiding the incoming gas to the burner with two caps in a manner corresponding to the inner cap and the outer cap (not shown). The gas flow to the outlet pipes 12a and 12b is regulated by overlapping the outlet holes 15a and 15b with the corresponding number of connection openings 21a and 21b of the turntable 20.

[0064] Fig.14 An embodiment of a rotary disk 20 for regulating a valve 100' is shown, the rotary disk comprising two through-connecting openings 21a and 21b for regulating the gas flow from the receiving portion 13 of the valve body 10 to the outlet pipes 12a and 12b, depending on the angular position of the rotary disk. The through holes of the connecting openings 21a and 21b form arcs of different radii, the radius of the opening 21b being smaller than the radius of the opening 21a, so that a certain number of holes of the connecting openings 21a and 21b of the rotary disk 20 overlap with the outlet openings 15a and 15b in order to obtain a desired gas flow in the gas outlet pipes 12a and 21b.

[0065] The remaining differences between the regulating valve 100 ′ and the aforementioned embodiment of the regulating valve 100 are as follows: Fig.13 As shown, the gasket 60 also includes two closure members 70a and 70b associated with each outlet hole 15a and 15b, respectively, but in this embodiment of the regulating valve 100', the outlet holes 15a and 15b are not adjacent, but are arranged at two ends of the gasket 60 separated by 180°, and the closure members 70a and 70b are close to the edge of the contact surface 14. The gasket 60 also includes two attachment arms 80a and 80b radially attaching the two closure members 70a and 70b, and the two attachment arms 80a and 80b almost form a circle, wherein the two attachment arms 80a and 80b surround the center of the gasket 60, so that the gasket 60 is substantially centered on the contact surface 14. In this embodiment, each of the arms 80a and 80b includes a protrusion 81 so that when the turntable 20 is pressed onto the gasket 60, the turntable 20 is supported on the support surfaces 73a and 73b of the main bodies 71a and 71b of the closure members 70a and 70b and the upper area 82 of the protrusion 81, respectively.

[0066] In this embodiment of the regulating valve 100', the attachment arms 80a and 80b extend almost radially to the edge of the contact surface 14 in the housing 13, so that the attachment arms 80a and 80b give the gasket 60 seating stability in the housing 13 of the valve body 100. The protrusions 81 are arranged on the surfaces of the attachment arms 80a and 80b in contact with the rotary disk 20, and are distributed at an angle of about 180° relative to each other, centered on the center of the gasket 60, almost in the center of the surface.

[0067] For the same reasons as described for the first embodiment of the regulating valve 100, due to the increased pressure exerted on the gasket 60 (this is due to the smaller support surface of the turntable 20 on the gasket 60) for the same dimensions of the spring 50 as used in the prior art, the solution defined in the second embodiment of the regulating valve 100' allows to ensure the seal in any rotational position of the turntable 20 and in particular in the closed position of the regulating valve.

[0068] Furthermore, the corresponding bodies 71a and 71b of the closure members 70a and 70b of the gasket 60 have a substantially circular cross section, and the closure members 70a and 70b are configured as an elliptical joint that fits and surrounds the corresponding outlet holes 15a and 15b. The bodies 71a and 71b include closed protrusions 74a and 74b that extend out of the upper part of the joint and extend along the contour of the bodies 71a and 71b, and the support turntable 20 is supported at the closed protrusions 74a and 74b. In this way, like in the protrusion 81, when the turntable 20 is supported on the bodies 71a and 71b of the closure members 70a and 70b and is pressed on the gasket 60, when the turntable 20 rotates due to the action of the drive shaft 40, the bodies 71a and 71b define a very small and thus low friction contact surface with the face 22 of the turntable 20. The surface provided by the gasket 60 for supporting the turntable 20 is therefore defined only by the closing projections 74 a and 74 b and the upper region 82 of the projection 81 .

[0069] In this embodiment of the regulating valve 100', the bodies 71a and 71b of the closing members 70a and 70b further include respective lower protrusions 75a and 75b, which protrude below the joint and extend along the contour of the bodies 71a and 71b, at which the gasket 60 is supported on the contact surface 14. Like the closing protrusions 74a and 74b, the lower protrusions 75a and 75b define a very small contact surface, so the pressure exerted by the gasket 60 on the contact surface 14 is greater, which ensures a greater degree of sealing.

[0070] Furthermore, in this embodiment of the regulating valve 100', the protrusion 81 has a longitudinal axis that is angularly offset relative to the longitudinal axis of each of the attachment arms 80a and 80b. The arrangement of the protrusions 81 in the attachment arms 80a and 80b forms a portion of an imaginary circle whose center is at the rotation center of the rotary disk 20, so that when the rotary disk 20 is rotated in a state where it is in contact with the gasket 60, the contact occurs on the protrusions 81 in an area with a smaller contact surface.

[0071] The channel 16 on the contact surface 14 comprises two branches or arms in which the attachment arms 80a and 80b are housed, thus attaching two areas of the closing members 70a and 70b in which the gasket 60 is housed. This housing of the gasket 60 in the channel 16 allows the stability of the gasket 60 to be ensured, given that each attachment arm 80a and 80b is housed in a channel 16 whose side walls house the gasket 60 and immobilize it.

[0072] In this embodiment, if Fig.15As shown, the regulating valve 100' also includes a push plate 90, which is supported on the turntable 20 so as to occupy the entire surface of the turntable 20, the end 51 of the spring 50 pushing the turntable 20 is supported on one surface of the push plate 90, and the other surface of the push plate 90 is supported on the surface 23 of the turntable 20.

[0073] In this embodiment, the push plate 90 further comprises three protrusions 91, which allow the end 51 of the spring 50 to be coupled to the push plate 90, i.e., clamped to the protrusions 91. The protrusions 91 are arranged to form concentric circles centered at the center of the push plate 90. The push plate 90 further comprises two through holes 97 and 98, which respectively provide passages for the gas flow to flow from the accommodation portion 13 through the connection openings 21a and 21b of the turntable 20 to the outlet holes 15a and 15b, respectively.

[0074] In this embodiment of the regulating valve 100', the two outlet holes 15a and 15b are not adjacent and are arranged such that the outlet hole 15a is closer to the edge of the contact surface 14, while the outlet hole 15b is located between the center of the contact surface 14 and the edge on the diameter of the outlet hole 15a on the contact surface 14. Since the pressure that the spring 50 operably applies to the gasket 60 (specifically, to the closed area of ​​the gasket 60 formed by the closing members 70a and 70b) is important, the spring 50 is arranged on the push plate 90, as shown in FIG. Fig.16 and Fig.17 As shown, i.e. clamped to the protrusion 93 and centered relative to the center of the rotary disk 20 and the push plate 90, so that in this embodiment of the regulating valve 100', the axial projection of the spring 50 above the gasket 60 passes through the inner edge of the body 71a of the corresponding closure member 70a and 70b and the outer edge of the body 71b. With such a size of the regulating valve 100' and such an arrangement of the corresponding outlet holes 15a and 15b on the contact surface 14, in this regulating valve 100', one spring 50 is sufficient to ensure sealing, in particular to ensure sealing in the closed position of the regulating valve 100.

[0075] Figures 18 to 26A third embodiment of a regulating valve 100″ for a gas cooker according to the present invention is shown, which comprises a safety valve 30 and three gas outlet pipes 12a, 12b and 12c. The regulating valve 100″ comprises the same features as the embodiment of the regulating valve 100′, except that the regulating valve 100″ comprises two springs, namely a spring 50a and a second spring 50b, which push the turntable 20 and axially hold the turntable against the contact surface 14. The spring 50a has a diameter greater than the spring 50b. In addition, the contact surface 14 of the accommodating portion 13 of the valve body 10 comprises three outlet holes 15a, 15b and 15c which are fluidically connected to the three gas outlet pipes 12a, 12b and 12c in a corresponding manner, and the outlet holes 15a, 15b and 15c in this embodiment are three holes for the main gas flow rather than for the minimum flow (especially with a bypass). The gas outlet ducts 12a, 12b and 12c are adapted to direct the incoming gas to the burner having three caps in a manner corresponding to the inner cap, the middle cap and the outer cap (not shown). The gas flow to the outlet ducts 12a, 12b and 12c is regulated by overlapping the outlet holes 15a, 15b and 15c with the corresponding number of connecting openings 21a, 21b, 21c of the rotating disk 20.

[0076] Fig. 22 An embodiment of a rotary disk 20 for regulating a valve 100″ is shown, the rotary disk 20 comprising three through-connecting openings 21a, 21b, 21c for regulating the gas flow from the accommodation portion 13 of the valve body 10 to the outlet pipes 12a, 12b and 12c according to its angular position. The through holes of the connecting openings 21a, 21b and 21c each form a radial row of different radii, the radius of the opening 21c being smaller than the radius of the opening 21b, and the radius of the opening 21b being smaller than the radius of the opening 21a, so that in order to obtain a desired gas flow in the gas outlet pipes 12a, 12b and 12c, a specific number of holes of the connecting openings 21a, 21b and 21c of the rotary disk 20 are overlapped with the outlet holes 15a, 15b and 15c.

[0077] The remaining differences between the control valve 100 ″ and the control valve 100 ′ described above are as follows: Fig.21 As shown, the gasket 60 includes three closing members 70a, 70b and 70c respectively associated with each outlet hole 15a, 15b and 15c, but in this embodiment of the regulating valve 100", the outlet holes 15a, 15b and 15c are not arranged at 180°, but are arranged in an approximately triangular shape of the gasket 60, wherein the closing member 70a is close to the edge of the contact surface 14, the closing member 70b is located in the middle area of ​​the contact surface 14, and the closing member 70c is close to the hole 6 of the contact surface 14, in which the lower end of the drive shaft 14 is accommodated.

[0078] The gasket 60 includes four attachment arms 80a, 80b, 80c, and 80d that radially attach two closing members 70a and 70b (the closing members 70a and 70b are located in a circular path opposite to the previous one), two closing members 70a and 70c, and two closing members 70c and 70b, respectively, the two attachment arms 80a and 80b almost form a circle, the attachment arms 80c and 80d are transversely attached to the attachment arm 80b through the closing member 70c, and the four attachment arms 80a, 80b, 80c, and 80d surround the center of the gasket 60. In this embodiment, as Fig.26 As shown in detail in the figure, each arm 80a and 80b includes a protrusion 81, so that when the turntable 20 is pressed onto the gasket 60, the turntable 20 is supported on the support surfaces 73a, 73b and 73c of the main bodies 71a, 71b and 71c of the closing members 70a, 70b and 70c, respectively, and is supported on the upper area 82 of the protrusion 81.

[0079] In this embodiment of the regulating valve 100″, the circle formed by the attachment arms 80a and 80b is slightly eccentric relative to the center of the contact surface 14 and does not cover the entire contact surface 14 in the accommodation portion 13, but its opening is wide enough to give stability to the placement of the gasket 60 in the accommodation portion 13 of the valve body 10. The protrusions 81 are arranged on the surfaces of the attachment arms 80a and 80b that are in contact with the rotating disk 20, and are almost in the center of the surface, centered on the center of the gasket 60, and the protrusions 81 are distributed at an angle of approximately 180° relative to each other.

[0080] For the same reasons as those described for the first and second embodiments of the regulating valves 100 and 100', the solution defined in the third embodiment of the regulating valve 100" allows ensuring the seal in any rotational position of the rotating disk 20 and in particular in the closed position of the regulating valve, due to the increased pressure exerted on the gasket 60 (this is due to the smaller support surface of the rotating disk 20 on the gasket 60) for the same dimensions of the spring 50 as used in the prior art.

[0081] Further, like the gasket 60 of the second embodiment of the regulating valve 100', the respective bodies 71a, 71b and 71c of the closing members 70a, 70b and 70c of the gasket 60 have substantially circular cross sections, and the closing members 70a, 70b and 70c are configured to fit and surround the elliptical joints of the corresponding outlet holes 15a, 15b and 15c. Fig.26As shown in detail in FIG. 1 , the bodies 71a, 71b and 71c include closed protrusions 74a, 74b and 74c extending along the contour of the bodies 71a, 71b and 71c at the upper part of the joint, at which the turntable 20 is supported. In this way, like in the protrusion 81, when the turntable 20 is supported on the bodies 71a, 71b and 71c of the closing members 70a, 70b and 70c and thus pressed on the gasket 60, when the turntable 20 rotates due to the action of the drive shaft 40, the bodies 71a, 71b and 71c define a very small and therefore low-friction contact surface with the face 22 of the turntable 20. Therefore, the surface provided by the gasket 60 for supporting the turntable 20 is limited only by the closed protrusions 74a, 74b and 74c and the upper area 82 of the protrusion 81.

[0082] In this embodiment of the regulating valve 100″, the main bodies 71a, 71b and 71c of the closing members 70a, 70b and 70c further include corresponding lower protrusions 75a, 75b and 75c protruding from the lower part of the joint and extending along the contour of the main bodies 71a, 71b and 71c, and the gasket 60 is supported on the contact surface 14 at the lower protrusions 75a, 75b and 75c. Like the closing protrusions 74a, 74b and 74c, the lower protrusions 75a, 75b and 75c define a very small contact surface, so the pressure applied by the gasket 60 on the contact surface 14 is greater, which ensures the seal to a greater extent.

[0083] Fig.26 Also shown in detail are the protrusions 81 of the gaskets 60 of the regulating valves 100 and 100', and the closing protrusions 74a and 74b and lower protrusions 75a and 75b of the bodies 71a and 71b of the respective closing members 70a and 70b of the regulating valve 100'.

[0084] Furthermore, in this embodiment of the regulating valve 100 ′, like the first embodiment of the regulating valve 100 , the protrusion 81 has a longitudinal axis that is aligned with the longitudinal axes of the attachment arms 80 a and 80 b to which the protrusion 81 is joined.

[0085] The channel 16 on the contact surface 14 comprises as many branches or arms as the number of attachment arms, thus attaching three areas of closing members 70a, 70b and 70c that house the gasket 60. This housing of the gasket 60 in the channel 16 allows the stability of the gasket 60 to be ensured, given that each attachment arm 80a, 80b, 80c and 80d is housed in a channel 16 whose side walls house and immobilize the gasket 60.

[0086] In this embodiment, if Fig.23As shown, the regulating valve 100" also includes a push plate 90, which is supported on the turntable 20 occupying its entire surface, and the ends 51a and 51b of the springs 50a and 50b that push the turntable 20 are supported on one surface of the push plate 90, and the other surface of the push plate 90 is supported on the surface 23 of the turntable 20.

[0087] In this embodiment, the push plate 90 includes six protrusions 91 arranged on the surface to which the springs 50a and 50b are coupled, wherein three protrusions are distributed in the outer circle and three protrusions are distributed in the inner circle, which allows the ends 51a and 51b of the springs 50a and 50b to be coupled to the push plate 90, i.e., clamped to the protrusions 91, respectively. The protrusions 91 are arranged to form concentric circles centered on the center of the push plate 90. The push plate 90 includes three through holes 97, 98 and 99, which provide passages for the gas flow to flow from the accommodating portion 13 to the outlet holes 15a, 15b and 15c through the connecting openings 21a, 21b and 21c of the turntable 20, respectively.

[0088] In this embodiment of the regulating valve 100″, the three outlet holes 15a, 15b and 15c are not adjacent and are arranged so that the outlet hole 15a is closer to the edge of the contact surface 14, the outlet hole 15b is located at the center of the contact surface 14, and the outlet hole 15c is closer to the center of the contact surface 14 (in the receiving portion 6 at the lower end of the drive shaft 40), and the three outlet holes 15a, 15b and 15c form a triangle. Since the pressure operatively applied by the springs 50a and 50b on the gasket 60 and specifically on the closed area of ​​the gasket 60 formed by the closing members 70a, 70b and 70c is more important, as shown in FIG. Fig.16 and Fig.17 As shown, the springs 50a and 50b are arranged on the push plate 90, i.e., clamped to the protrusion 93, and centered relative to the center of the turntable 20 and the push plate 90, so that in this embodiment of the regulating valve 100", the axial projection of the springs 50a and 50b on the gasket 60 causes the spring 50a to pass through the outer edge of the main body 71a of the closing member 70a, and causes the second spring 50b to pass through the inner edge of the main body 71b of the closing member 70b and the inner edge of the main body 71c of the closing member 70c. This embodiment of the regulating valve 100" has larger dimensions than the first and second embodiments of the regulating valves 100 and 100', and also takes into account the open arrangement of the corresponding outlet holes 15a, 15b and 15c on the contact surface 14. In this regulating valve 100", a single spring is not sufficient to make the compression on the closing surface of the gasket 60 uniform and thereby ensure sealing, in particular to ensure the sealing of the closed position of the regulating valve 100", and therefore two springs 50a and 50b having the above-mentioned characteristics are arranged.

[0089] The present invention further relates to a gas cooker 200 , which is combined with at least one regulating valve 100 , 100 ′, 100 ″ according to the present invention. Fig. 27 By way of illustration, a schematic diagram of an embodiment of a gas cooker 200 according to the invention is shown with four burners 300 , each burner 300 having its own regulating valve 100 , 100 ′, 100 ″. Fig.26 The gas cooker 200 further includes an on-off stop valve 400 at the gas supply inlet. Although the regulating valves 100, 100', 100" are manually operated in this embodiment, in other embodiments not shown in the drawings, the regulating valves 100, 100', 100" may be controlled by a control device, or both by the control device and manually.

[0090] The gas cooker 200 may be, for example, a gas stove, a gas furnace, a gas oven or a grill.

Claims

1. A regulating valve for a gas cooker, the regulating valve include: a valve body, the valve body comprising an inlet pipe for supplying gas, at least one gas outlet pipe and a receiving portion in fluid communication with the inlet pipe and the outlet pipe; a rotating disk, the rotating disk being arranged on a contact surface of the receiving portion in the receiving portion of the valve body, the contact surface comprising at least one outlet hole in fluid communication with the outlet pipe, the rotating disk being adapted to rotate relative to the contact surface and being adapted to adjust a gas flow between the receiving portion and the outlet pipe by rotation of the rotating disk; a spring that pushes the rotating disk and axially holds the rotating disk against the contact surface; and a sealing device, which is accommodated on the contact surface around the at least one outlet hole, and the turntable is pressed and supported on the sealing device, characterized in that the sealing device includes a gasket, which includes: at least one closing member associated with the at least one outlet hole, each closing member includes a main body around the corresponding outlet hole; and at least one attachment arm attached to the at least one closing member, the at least one attachment arm includes at least one protrusion, wherein when the turntable is pressed on the gasket, the turntable is supported on the closing member and the protrusion.

2. The regulating valve for a gas cooker according to claim 1, It is characterized in that The protrusion extends from the attachment arm, thereby defining a curved outer surface.

3. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that The attachment arm has a quadrilateral cross-section.

4. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that The protrusion has a longitudinal axis that is angularly offset relative to a longitudinal axis of the attachment arm.

5. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that The body of the closure member of the gasket has a circular cross-section.

6. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that The main body includes a closing protrusion extending along a contour of the main body, and the turntable is supported at the closing protrusion.

7. The regulating valve for a gas cooker according to claim 6, It is characterized in that The body of the closure member comprises a lower protrusion extending along the contour of the body, the gasket being supported on the contact surface at the lower protrusion.

8. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that The at least one attachment arm attaches the at least one closure member about a center of rotation of the turntable.

9. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that The contact surface of the receiving portion of the valve body includes a flat support surface including a channel, wherein the gasket is received in the channel.

10. The regulating valve for a gas cooker according to claim 9, It is characterized in that The regulating valve comprises a bushing arranged in such a way as to be introduced into the outlet hole, wherein a portion of the bushing protrudes from the outlet hole, the body of the closure member accommodated in the passage laterally abutting against a wall of the passage and the portion of the bushing.

11. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that The regulating valve includes a push plate supported on the rotary disk, an end of the spring that pushes the rotary disk is supported on the push plate, and the push plate includes a plurality of protrusions that allow the end of the spring to be coupled to the push plate.

12. The regulating valve for a gas cooker according to claim 11, It is characterized in that The push plate includes a directional protrusion and a plurality of fixed protrusions along the periphery of the edge, the accommodating portion of the valve body includes a side wall defining the boundary of the contact surface, the side wall includes a protrusion accommodating portion, the directional protrusion is accommodated in the protrusion accommodating portion, and the plurality of fixed protrusions are arranged to press on the side wall when the push plate is supported on the turntable.

13. The regulating valve for a gas cooker according to claim 12, It is characterized in that The push plate includes a plurality of openings arranged inside the push plate and facing in association with each of the fixing protrusions.

14. The regulating valve for a gas cooker according to claim 1 or 2, It is characterized in that If there is one outlet hole, the axial projection of the spring above the gasket partially passes over the body of the corresponding closing member, if there are two outlet holes, the axial projection of the spring above the gasket partially passes over the bodies of the two corresponding closing members, and if there are three outlet holes, the axial projection of the spring above the gasket partially passes over the bodies of the first and second closing members among the closing members, and the regulating valve includes a second spring, which partially passes over the body of the third closing member among the closing members.

15. The regulating valve for a gas cooker according to claim 4, It is characterized in that The protrusion forms a part of an imaginary circle centered at the rotation center of the turntable.

16. A gas cooker, It is characterized in that The gas cooker comprises at least one regulating valve according to any one of the preceding claims.

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