초록 ▼

Regulating valve for a gas cooking appliance suitable for supplying different types of combustible gas such as, for example, natural gas or liquefied gas. A valve body of the valve has an inlet conduit, an outlet conduit and a cavity wherein a rotary regulating member is housed. The regulating membe

Regulating valve for a gas cooking appliance suitable for supplying different types of combustible gas such as, for example, natural gas or liquefied gas. A valve body of the valve has an inlet conduit, an outlet conduit and a cavity wherein a rotary regulating member is housed. The regulating member includes a plurality of inlet paths communicated with the inlet conduit which, by means of the rotation of the regulating member, allows varying gas flow in the outlet conduit. According to some implementations, the inlet path of the regulating member corresponding to a minimum gas flow is in one and the same angular and axial position for each of the different types of combustible gases.

대표청구항 ▼

1. A regulating valve for regulating the flow of a first type of gas or a second type of gas, the regulating valve comprising: a valve body including a gas inlet conduit, a gas outlet conduit and an inner conduit, each of the gas inlet conduit, gas outlet conduit and inner conduit being in fluid com

1. A regulating valve for regulating the flow of a first type of gas or a second type of gas, the regulating valve comprising: a valve body including a gas inlet conduit, a gas outlet conduit and an inner conduit, each of the gas inlet conduit, gas outlet conduit and inner conduit being in fluid communication with a cavity located in the valve body, the inner conduit extending between the cavity and the gas outlet conduit, the inner conduit having an inlet opening that opens into the cavity and an outlet opening that opens into the gas outlet conduit; anda regulating member having a longitudinal axis that is housed and rotatable in the cavity of the valve body, the regulating member including a wall that separates an exterior of the regulating member with a longitudinal inner chamber of the regulating member, the longitudinal inner chamber having an outlet in fluid communication with the gas outlet conduit of the valve body, the regulating member having a first opening corresponding to a maximum gas flow of each of the first and second types of gases that extends from the exterior of the regulating member into the longitudinal inner chamber, a second opening corresponding to an intermediate gas flow of each of the first and second types of gases that extends from the exterior of the regulating member into the longitudinal inner chamber, and a slot corresponding to a minimum gas flow of the first and second types of gas formed in the wall and extending only partially through the wall, the regulating member rotatable between at least first, second and third angular positions, in the first angular position the first opening corresponding to the maximum gas flow is aligned with the inlet conduit of the valve body, in the second angular position the second opening corresponding to the intermediate gas flow is aligned with the inlet conduit of the valve body, in the third angular position the slot is aligned with the inlet conduit of the valve body and also with the inlet opening of the inner conduit,wherein gas flow is prevented from passing between the slot and the inner conduit when the second opening of the regulating member is in fluid communication with the inlet conduit of the valve body. 2. A regulating valve according to claim 1, wherein the first type of gas is natural gas and the second types of gas is liquefied gas. 3. A regulating valve according to claim 1, wherein at least a portion of each of the first opening, the second opening and the slot occupy a same longitudinal position on the regulating member. 4. A regulating valve according to claim 1, wherein the second opening in the regulating member comprises a first elongate groove that partially circumscribes the regulating member. 5. A regulating valve according to claim 4, wherein an end of the first elongate groove opens into the first opening. 6. A regulating valve according to claim 5, wherein the slot comprises a second elongate groove that partially circumscribes the regulating member, the first and second elongate grooves being spaced longitudinally apart on the regulating member. 7. A regulating valve according to claim 1, wherein the slot comprises a substantially circular cavity in fluid communication with an elongate groove that partially circumscribes the regulating member, when the regulating member is in the third angular position the substantially circular cavity is aligned with the inlet conduit of the valve body and at least a portion of the elongate groove is aligned with the inlet opening of the inner conduit. 8. A regulating valve according to claim 2, wherein the first type of gas is natural gas and the second type of gas is liquified gas, the regulating valve further comprising a removable injector arranged in the gas outlet conduit of the valve body, the injector having a first end and a second end and comprising an inner passage running axially between a first opening in the first end and a second opening in the second end, the injector having a central body with an outer surface, the outer surface of the central body and an inner surface of the gas outlet conduit of the valve body defining an intermediate chamber into which the outlet opening of the inner conduit of the valve body opens, the inner passage of the injector being in fluid communication with the longitudinal inner cavity of the regulating member, the intermediate chamber being insulated from the longitudinal inner cavity of the regulating member by a seal located at or near the first end of the injector, the central body of the injector having a first calibrated opening extending between the outer surface of the central body and the inner passage, the first calibrated opening configured to establish a minimum gas flow through the regulating valve for the first type of gas. 9. A regulating valve according to claim 8, further comprising a second calibrated opening located within the inner passage of the injector, the second calibrated opening disposed nearer the second end of the injector than the first calibrated opening, the second calibrated opening configured to establish a maximum gas flow through the regulating valve for the first type of gas. 10. A regulating valve according to claim 8, wherein the removable injector comprises a threaded area at or near the second end that attaches to the gas outlet conduit of the valve body via a threaded engagement, the threaded engagement insulating the intermediate chamber from an exterior of the regulating valve. 11. A regulating valve according to claim 8, wherein the first end of the removable injector comprises a circular groove with a gasket disposed therein, the gasket forming a seal between the injector and the outer surface of the gas outlet conduit of the valve body. 12. A regulating valve according to claim 8, wherein the first calibrated opening is located near the second end of the removable injector. 13. A regulating valve according to claim 10, wherein the first calibrated opening is located near the threaded area of the removable injector. 14. A regulating valve according to claim 8, wherein the valve body comprising an outlet chamber communicating the outlet of the longitudinal inner chamber of the regulating member with the inner passage of the removable injector. 15. A regulating valve according to claim 1, wherein the first opening, second opening and slot correspond with different angular positions of the regulating member. 16. A regulating valve according to claim 3, wherein the first opening, second opening and slot correspond with different angular positions of the regulating member. 17. A regulating valve according to claim 1, wherein the second opening comprises a groove that runs substantially perpendicular to the longitudinal axis of the regulating member, the groove having a first end and a second end, the first end of the second opening being communicated with the first opening, the groove having a decreasing width between the first end and the second end. 18. A regulating valve according to claim 17, wherein the longitudinal axis of the groove is substantially aligned with the center of the first opening. 19. A regulating valve according to claim 6, wherein the first elongate groove resides nearer the outlet of the regulating member than the second elongate groove. 20. A regulating valve according to claim 6, wherein the second elongate groove resides nearer the outlet of the regulating member than the first elongate groove. 21. A regulating valve according to claim 1, wherein the valve body is made of a metal material, the inner conduit of the valve body comprising a plurality of sub-conduits, at least one of the plurality of sub-conduits being sealed from an exterior of the valve body by means of a metal ball. 22. A regulating valve according to claim 2 wherein the first type of gas is natural gas and the second type of gas is liquefied gas, the regulating valve further comprising a removable injector arranged in the gas outlet conduit of the valve body, the injector having a first end and a second end and comprising an inner passage running axially between a first opening in the first end and a second opening in the second end, the injector having a central body with an outer surface, the outer surface of the central body and an inner surface of the gas outlet conduit of the valve body defining an intermediate chamber into which the outlet opening of the inner conduit of the valve body opens, the inner passage of the injector being in fluid communication with the longitudinal inner cavity of the regulating member, the intermediate chamber being insulated from the longitudinal inner cavity of the regulating member by a seal located at or near the first end of the injector, the central body of the injector having a first calibrated opening extending between the outer surface of the central body and the inner passage, the first calibrated opening configured to establish a minimum gas flow through the regulating valve for the second type of gas. 23. A regulating valve according to claim 22, further comprising a second calibrated opening located within the inner passage of the injector, the second calibrated opening disposed nearer the second end of the injector than the first calibrated opening, the second calibrated opening configured to establish a maximum gas flow through the regulating valve for the second type of gas. 24. A regulating valve according to claim 22, wherein the removable injector comprises a threaded area at or near the second end that attaches to the gas outlet conduit of the valve body via a threaded engagement, the threaded engagement insulating the intermediate chamber from an exterior of the regulating valve. 25. A regulating valve according to claim 22, wherein the first end of the removable injector comprises a circular groove with a gasket disposed therein, the gasket forming a seal between the injector and the outer surface of the gas outlet conduit of the valve body. 26. A regulating valve according to claim 22, wherein the first calibrated opening is located near the second end of the removable injector. 27. A regulating valve according to claim 24, wherein the first calibrated opening is located near the threaded area of the removable injector. 28. A regulating valve according to claim 22, wherein the valve body comprising an outlet chamber communicating the outlet of the longitudinal inner chamber of the regulating member with the inner passage of the removable injector.