SYSTEMS AND METHODS FOR CONTROLLING  A VARIABLE GAS VALVE

    公开(公告)号:US20240183533A1

    公开(公告)日:2024-06-06

    申请号:US18061806

    申请日:2022-12-05

    IPC分类号: F23N1/00

    摘要: A modulating gas valve assembly includes a modulating gas valve to variably control a flow of gas through the gas valve assembly and a control circuit. The control circuit includes a valve memory storing a calibration table for the modulating gas valve, and a controller communicatively coupled to the peripheral component. The calibration table includes a plurality of control settings for the modulating gas valve, each control setting being associated with a different gas flow rate. The controller is programmed to receive a command to open the gas valve, and to control the gas valve to a target control setting in the calibration table adjusted in accordance with a valve offset.

    Flame module for a spectrometer
    2.
    发明授权

    公开(公告)号:US11953203B2

    公开(公告)日:2024-04-09

    申请号:US17251685

    申请日:2019-06-24

    摘要: A gas supply system for a flame module of a spectrometer and a method of controlling a flame module. The gas supply system comprises an oxidant gas supply line for providing a supply of oxidant gas, an oxidant gas flow valve for varying a gas flow rate of an oxidant gas in the oxidant gas supply line, an oxidant gas safety controller configured to control the oxidant gas flow valve, a fuel gas supply line for providing a supply of fuel gas, a fuel gas flow valve configured to control a gas flow rate of a fuel gas on the fuel gas supply line, and a fuel gas safety controller configured to control the fuel gas flow valve. During normal operation, the oxidant gas safety controller is configured to charge an energy storage circuit of the oxidant gas safety controller. In the event of a power failure, a first switch of the oxidant gas safety controller is configured to connect the energy storage circuit to the oxidant gas flow valve, wherein the energy storage circuit is configured to discharge energy to the oxidant gas flow valve to increase the oxidant gas flow rate in order to extinguish a flame of the flame module, and the fuel gas safety controller is configured to close the fuel gas flow valve.

    Modulating oven burner control for gas cooking appliance

    公开(公告)号:US11754291B2

    公开(公告)日:2023-09-12

    申请号:US17035049

    申请日:2020-09-28

    IPC分类号: F23N1/00 F24C3/12 F24C3/08

    摘要: A cooking appliance including an oven compartment, and first and second gas burners positioned to supply heat to the oven compartment. The first and second gas burners respectively include first and second electromechanical modulating valves that respectively couple the first and second gas burners to a gas supply. A controller is used to control the first and second gas burners to heat the oven compartment, and the controller, when maintaining a predetermined temperature in the oven compartment, controls the electromechanical modulating valves of the first and second gas burners to vary respective output levels of the first and second gas burners while maintaining a substantially constant combined output level for the first and second gas burners.

    System and method for operational control of a water heater apparatus with a combustible gas burner

    公开(公告)号:US11719437B2

    公开(公告)日:2023-08-08

    申请号:US17128443

    申请日:2020-12-21

    申请人: SIT S.p.A.

    摘要: A control system of a water heater apparatus with a combustible gas burner is presented where the apparatus includes a pilot burner with an intermittent-type pilot flame, a main burner, a pilot valve and a main valve, a control unit, a flame detection electrode, introduced into the flame of the pilot burner, and which is configured to conduct an ionization current. The control unit is configured to measure/detect a variation involving increase/decrease of the intensity of ionization current detected, the variation in intensity of ionization current being generated during the change between a first condition, in which the ionization current identifies the ignition state of only the pilot burner, and a second condition, in which the ionization current identifies the simultaneous ignition state of the pilot burner and the main burner so that, by detection of the measurement/variation of ionization current, the effective ignition of the main burner is recognized.

    ELECTRO-PILOTSTATIC VALVE FOR GAS BURNERS
    9.
    发明申请

    公开(公告)号:US20180266684A1

    公开(公告)日:2018-09-20

    申请号:US15745928

    申请日:2016-07-21

    IPC分类号: F23N5/24 F23N1/00 F24C3/12

    摘要: The object of the present invention is hence an electro-actuator (1) for gas cooktops or the like, piloted by actuating means, comprising at least one safety electromagnet (4) forming part of a pilotstat, at least one cut-off means (2) of the fuel gas, substantially a sleeve provided with an outlet channel (22) and a conduit (23) of the fuel gas, of at least one safety shutter (20) whereon a pushing/pulling force (FF) acts that operates the safety closing of said outlet channel (22), at least a service shutter (20), and a support structure (10) provided with a cavity (100) within which a stem (21) is placed sliding, whereto at least one ferromagnetic element (32) cooperating with said safety electromagnet (4) and said shutter (20) cooperating with the cut-off means (2) of the fuel gas are constrained, where said safety shutter (20) and said service shutter (20) coincide in a same shutter (20); said ferromagnetic element (32) being anchored to said safety electromagnet (4) through an anchoring force (FP) of mutual attraction that arises when said safety electromagnet (4) is electrically powered, in particular through the flame sensor of pilotstat,characterised in that: said pressing/pulling force (FF) is of magnetic nature and susceptible to be won by the command forces (FS) exerted for the opening of said outlet channel (22) and by said anchoring force (FP).