A gas grill is disclosed having a gas control valve with a push to sear feature. The gas control valve has a housing with a valve core rotatably disposed within the housing. A sear valve is disposed within the valve core. A user rotates the valve core within the housing to selectively align a gas in
A gas grill is disclosed having a gas control valve with a push to sear feature. The gas control valve has a housing with a valve core rotatably disposed within the housing. A sear valve is disposed within the valve core. A user rotates the valve core within the housing to selectively align a gas inlet port with an inlet passage and to align a sear gas port and a sear gas flow passage. The sear valve has a sear valve element which is selectively movable relative to the valve core to selectively pass a sear gas through a sear gas port and a sear flow passage to the forward end of the valve housing, and then to the grill. A bias member, preferably a coil spring, is mounted between the sear valve element and the valve core for urging the sear valve element to a closed position.
대표청구항▼
1. A gas control valve comprising: a valve housing having an interior cavity, a first inlet port operable for receiving gas from a gas source, an inlet passage extending from said first inlet port to said interior cavity, a primary outlet port extending from said interior cavity, and a sear gas flow
1. A gas control valve comprising: a valve housing having an interior cavity, a first inlet port operable for receiving gas from a gas source, an inlet passage extending from said first inlet port to said interior cavity, a primary outlet port extending from said interior cavity, and a sear gas flow passage extending from said interior cavity to a forward end of said housing, wherein said inlet passage, said primary outlet port and said sear gas flow passage are spaced apart at said interior cavity;a valve core having an exterior periphery and main chamber which is disposed interiorly within said valve core, at least one gas inlet port extending from said exterior periphery to said main chamber, a gas outlet port extending from said main chamber to said exterior periphery, wherein said valve core is mounted within said valve housing such that said valve core is selectively moveable within said valve housing for aligning said at least one gas inlet port with said inlet passage;a sear valve disposed relative to one of said valve core and said valve housing for controlling a sear gas flow through said gas flow passage, said sear valve having a valve element which is selectively movable from a first position to a second position, wherein in said first position said valve element prevents said sear gas flow through said sear gas flow passage, and in said second position said valve element is disposed such that said sear gas flow passes through said sear flow passage, and said sear valve further including a bias member for urging said valve element to said first position; andwherein a user selectively operates said sear valve to move said valve element from said first position to said second position and said sear gas flow passes through said sear gas flow passage to said forward end of said valve housing. 2. The gas control valve according to claim 1, wherein said sear valve is disposed within said valve core and further comprises: said valve element having a head, an elongate body, and a seal element disposed adjacent of said head and said elongate body for engaging with a seal of said valve core; anda stop member fixed on said elongate body for limiting a range of movement for said valve element within said valve core and said valve housing. 3. The gas control valve according to claim 2, wherein said bias member is a coil spring extending about said elongate body of said valve element, and disposed between said stop member and a stop. 4. The gas control valve according to claim 1, further comprising: an inner nozzle mounted to said valve housing adjacent to said primary outlet port and having a first orifice for outputting gas flowing from said primary outlet port;an outer nozzle mounted to said valve housing adjacent to said inner nozzle, said outer nozzle having a second orifice for outputting gas flowing from said primary outlet port and said sear gas flow passage; andwherein said second orifice is disposed adjacent to said first orifice. 5. The gas valve according to claim 1, further comprising: a stop extension disposed in fixed relation to said valve housing;a stop device for restricting movement of the valve core from a first predetermined range in a first mode of operation and to allow a second predetermined range in a second mode of operation,wherein said stop device has a main body which is coupled to said valve core for moving with said valve core, and said stop device further includes a stop tab extending from said main body for engaging said stop extension to prevent movement outside of said second predetermined range. 6. The gas control valve according to claim 5, wherein said stop device is removably secured to a valve stem rigidly which is coupled to said valve core, and said stop device moves in association with said valve stem to thereby move with said valve core. 7. The gas control valve according to claim 5, wherein said first mode of operation is a liquid propane mode and the second mode of operation is a natural gas mode. 8. A gas control valve comprising: a valve housing having an interior cavity, a first inlet port operable for receiving gas from a gas source, an inlet passage extending from said first inlet port to said interior cavity, a primary outlet port extending from said interior cavity, and a sear gas flow passage extending from said interior cavity to a forward end of said housing, wherein said inlet passage, said primary outlet port and said sear gas flow passage are spaced apart at said interior cavity;a valve core having a main body which includes an exterior periphery and a main chamber which is disposed interiorly within said main body of said valve core, at least one gas inlet port extending from said exterior periphery to said main chamber, a gas outlet port extending from said main chamber to said exterior periphery, and a sear gas port extending from said main chamber to said exterior periphery, wherein said valve core is mounted within said valve housing such that said valve core is selectively rotatable within said valve housing for aligning said at least one gas inlet port with said inlet passage and aligning said sear gas port with said sear gas flow passage;a sear valve disposed within said valve core for controlling a sear gas flow from within said valve core, said sear valve having a valve element which is selectively movable in slidable relation to said valve core from a first position to a second position, wherein in said first position said valve element prevents said sear gas flow from said main chamber of said valve core through said sear gas port, and in said second position said valve element is disposed such that said sear gas flow passes from said main chamber through said sear gas port and said sear gas flow passage to said forward end of said valve housing, and said sear valve further including a bias member for urging said valve element to said first position; andwherein a user selectively moves said valve element from said first position to said second position to thereby pass said sear gas flow from said main chamber, through said sear gas port and said sear gas flow passage to said forward end of said valve housing. 9. The gas control valve according to claim 8, wherein said sear valve further comprises: said valve element having a head, an elongate body, and a seal element disposed adjacent said head and said elongate body for engaging with a seal surface disposed in fixed relation to said main body of said valve core;a stop ring fixed on said elongate body for limiting a range of movement for said valve element within said valve core. 10. The gas control valve according to claim 9, wherein said bias member is a coil spring extending about said elongate body of said valve element, and disposed between said stop ring and a stop defined by said main body of said valve core. 11. The gas control valve according to claim 8, further comprising an inner nozzle mounted to said valve housing adjacent to said primary outlet port and having a first orifice for outputting gas flowing from said primary outlet port;an outer nozzle mounted to said valve housing adjacent to said inner nozzle, said outer nozzle having a second orifice for outputting gas flowing from said primary outlet port and said sear gas flow passage; andwherein said second orifice is disposed adjacent to said first orifice. 12. The gas valve according to claim 8, further comprising: a stop extension disposed in fixed relation to said valve housing;a stop device for restricting movement of the valve core from a first predetermined range in a first mode of operation and to allow a second predetermined range in a second mode of operation, wherein said stop device has a main body which is coupled to said valve core for rotating with said valve core, and said stop device further includes a stop tab radially extending from said main body for engaging said stop extension to prevent movement outside of said second predetermined range. 13. The gas control valve according to claim 12, wherein said stop device is removably secured to a valve stem rigidly which is coupled to said valve core, and said stop device moves in association with said valve stem to thereby move with said valve core. 14. The gas control valve according to claim 12, wherein said first mode of operation is a liquid propane mode and the second mode of operation is a natural gas mode. 15. A gas grill comprising: a plurality of gas burners;a plurality of gas control valves for passing the gas to respective ones of said plurality of gas burners for combusting; wherein each of said control valves has a valve housing which includes an interior cavity, a first inlet port operable for receiving gas from a gas source, an inlet passage extending from said first inlet port to said interior cavity, a primary outlet port extending from said interior cavity, and a sear gas flow passage extending from said interior cavity to a forward end of said housing, wherein said inlet passage, said primary outlet port and said sear gas flow passage are spaced apart at said interior cavity,a valve core disposed in each of said control valves, respectively, each of said valve cores having an exterior periphery and main chamber which is disposed interiorly within said valve core, at least one gas inlet port extending from said exterior periphery to said main chamber, a gas outlet port extending from said main chamber to said exterior periphery, and a sear gas port extending from said main chamber to said exterior periphery, wherein said valve core is mounted within said valve housing such that said valve core is selectively moveable within said valve housing for aligning said at least one gas inlet port with said inlet passage and aligning said sear gas port with said sear gas flow passage;each said valve core having a sear valve disposed relative to a respective said valve core for controlling a sear gas flow from within said valve core, said sear valve having a valve element which is selectively movable relative to said valve core from a first position to a second position, wherein in said first position said valve element prevents said sear gas flow from said main chamber of said valve core through said sear gas port and said sear gas flow passage, and in said second position said valve element is disposed such that said sear gas flow passes from said main chamber through sear gas port and said sear flow passage, and said sear valve further including a bias member for urging said valve element to said first position; andwherein a user selectively operates said sear valve to move said valve element from said first position to said second position to passing said sear gas flow from said main chamber, through said sear gas port and said sear gas flow passage to said forward end of said valve housing. 16. The gas control valve according to claim 15, wherein said sear valve is disposed within said valve core and further comprises: said valve element having a head, an elongate body, and a seal element disposed adjacent said head and said elongate body for engaging with a seal surface disposed in fixed relation to said valve core; anda stop member fixed on said elongate body for limiting a range of movement for said valve element within said valve core. 17. The gas control valve according to claim 16, wherein said bias member is a coil spring extending about said elongate body of said valve element, and disposed between said stop member and a stop defined in fixed relation to said valve core. 18. The gas control valve according to claim 15, further comprising: an inner nozzle mounted to said valve housing adjacent to said primary outlet port and having a first orifice for outputting gas flowing from said primary outlet port;an outer nozzle mounted to said valve housing adjacent to said inner nozzle, said outer nozzle having a second orifice for outputting gas flowing from said primary outlet port and said sear gas flow passage; and wherein said second orifice is disposed adjacent to said first orifice. 19. The gas valve according to claim 15, further comprising: a stop extension disposed in fixed relation to said valve housing;a stop device for restricting movement of the valve core from a first predetermined range in a liquid propane mode of operation and to allow a second predetermined range in a natural gas mode of operation, wherein said stop device has main body which is coupled to said valve core for moving with said valve core, and said stop device further includes a stop tab extending from said main body for engaging said stop extension to prevent movement outside of said second predetermined range. 20. The gas control valve according to claim 19, wherein said stop device is removably secured to a valve stem rigidly which is coupled to said valve core, and said stop device moves in association with said valve stem to thereby move with said valve core.
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이 특허에 인용된 특허 (15)
Carlson Everett W. (Detroit MI), Convertible gas valve structure.
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