公开(公告)号：US20220003419A1

公开(公告)日：2022-01-06

申请号：US17363232

申请日：2021-06-30

申请人： SCP Holdings, An assumed business name of Nitride Igniters, LLC

发明人： Brian C. Dougherty ,  Erik Bothe ,  Jack A. Shindle ,  Yin Liu

IPC分类号： F24C3/12 ,  F23N1/00

摘要： A cooking gas safety apparatus is shown and described. The apparatus includes a cooking gas safety valve assembly that supplies cooking gas to one or more burners. The cooking gas safety assembly includes at least one coil that is energizable to hold the valve assembly in an open position when subjected to a current that exceeds a threshold value and a hold open circuit. The hold open circuit comprises the coil and a hot surface igniter that is in electrical communication with the coil. The valve assembly is actuated by manually opening the valve and energizing the igniter such that it receives a threshold current that corresponds to an autoignition temperature of the gas. At the threshold current, an electromagnet in the cooking gas safety valve assembly holds the valve open so that it remains open without user intervention. In the event of an igniter failure, the current flow to the coil ceases, causing the valve to shut and cease gas flow to the burner. In certain examples, hold open circuit allows the igniter to operate off of alternating current while the coil receives a time-varying, direct current.

公开(公告)号：US20210381694A1

公开(公告)日：2021-12-09

申请号：US17408605

申请日：2021-08-23

申请人： SCP Holdings, an assumed business name of Nitride Igniters, LLC

发明人： Bruce C. Sprowl ,  Jack A. Shindle ,  Robert Davignon ,  Brian C. Dougherty ,  Sudhir Bhahmandam

IPC分类号： F24C3/10 ,  F23N5/24 ,  F23Q7/12 ,  F23Q7/10 ,  F24C3/08 ,  F24C3/12 ,  F24C15/10

摘要： Hot surface igniter assemblies used in cooktops are shown and described. The hot surface igniters include a silicon nitride ceramic body with an embedded, resistive, heat-generating circuit. When energized, the circuit generates temperatures in excess of 2000° F. in under 4 seconds to ignite cooking gas such as natural gas. To prevent damage to the igniter during use or cleaning, an insulator assembly is provided which protects the distal end of the igniter ceramic body from damage while still exposing it to the cooking gas flow from the burner. In addition, a number of different terminal connection schemes for connecting the igniters to a power source are shown and described.