A gas valve having a gas valve body having a valve and a valve seat both housed by the gas valve body. The valve may further include an armature housed by the gas valve body, a pole situated outside of the gas valve body so as to not be exposed to gas in the gas valve body. The pole may be positioned to be in magnetic communication with at least part of the armature through the gas valve body. The valve may further include a coil situated outside the gas valve body. The coil may be wound about the pole such that activation of the coil produces a magnetic flux that is carried to an end of the pole, through the gas valve body, and to the armature, resulting in movement of the armature, and movement of the valve between the open position and the closed position.

This disclosure relates generally to valves, and more particularly, to gas valve assemblies. In one example, a valve leakage test and/or other tests may be performed on a valve assembly including a valve body with a first valve and a second valve, where the valves may be positioned across a fluid path in the valve body with an intermediate volume between the valves. A human machine interface (HMI) may be in communication with the valve assembly to initiate and/or monitor tests on the valve assembly. The HMI may include a start button on a user interface for initiating the tests on valve assembly. The HMI may receive results of the tests (e.g., valve leakage tests) in real time during the test and display the results of the tests on a display of the HMI in real time.

A thermoelectric assembly for powering one or more electromagnetic valves of a cooking appliance. According to one embodiment the assembly includes a main current circuit that includes a thermocouple, a cable configured for electrically connecting the thermocouple with an electromagnetic valve, and a transistor connected to the cable and configured for de-energizing the electromagnetic valve. The main current circuit also includes a connection module that includes a power supply connected to the transistor, the power supply having input terminals configured for being connected to an external energy source, a rectifier, and a resistive block connected between one of the input terminals and the rectifier, the resistive block being configured for minimizing the current circulating through the power supply to a value equivalent to the galvanic isolation.

Not only a cylindrical weight is inserted with a clearance around an outside of a first axis part or a second axis part that extends opposite to the first axis part and is movable freely in an axial direction but also an annular seat surface on which the cylindrical weight is able to be seated by self-weight is provided with a governor valve. A projecting part(s) is provided with only a part in circumferential direction of one of the annular seat surface and a lower end surface of the cylindrical weight. The cylindrical weight is made sure to be supported on the annular seat surface in an inclined state from an upright posture by contact of the projecting part(s) with the other of the annular seat surface and the lower end surface of the cylindrical weight.

A gas delivery apparatus has a delivery pipe that extends from a gas entrance end to a gas delivery end along which an entrance component, a pressure regulator and a flow rate regulator are present, coordinated with each other in order to supply on each occasion the desired quantity of gas to a burner of an apparatus fed with gas. or p with an air-gas mixture.

A gas cock for a gas burner and pilot flame includes a cock body with a plug receiving seat and a gas passage opening for passage of gas from/to the plug receiving seat. The cock has a conical plug, including a side wall extending around a central conical plug axis and housed in the plug receiving seat. The conical plug includes a plug opening for passage of gas from/to the plug receiving seat by the inner cavity of the conical plug based on a presettable angle of rotation between the cock body and the conical plug. The conical plug outer wall surface includes a groove connected to the plug opening. The groove includes a modulating portion extending between first and second angular positions in a circumferential direction of rotation of the conical plug with a depth that increases or decreases in the radial direction perpendicular to the side wall.

A gas appliance includes a burner, a gas valve, an ignitor, a thermocouple, and a control device, wherein the control device is adapted to execute a control method comprising the following steps: controlling the ignitor to ignite and the gas valve to open; receiving a sensing voltage output from the thermocouple; stop the ignitor from igniting and controlling the gas valve to keep a gas pipe be in an open state when the sensing voltage increases to a first voltage; receiving the sensing voltage output from the thermocouple continuously, and controlling the gas valve to block the gas pipe when the sensing voltage decreases from higher than a second voltage to lower than the second voltage, wherein the second voltage is higher than the first voltage. Whereby, an ignition procedure could be speeded up and the gas could be blocked earlier as the flames are extinguished.

A gas cooker may include a case, a top plate that shields an upper surface of the case and on which items to be cooked are seated, a plurality of burners provided inside of the case, an electric valve assembly that controls a gas supply to the plurality of burners, a main pipe connected to the electric valve assembly and that supplies gas, and a plurality of branched pipes, respectively, connected to the electric valve assembly and the plurality of burners. The electric valve assembly may include a main valve connected to the main pipe, a plurality of sub-valves respectively connected to the plurality of branched pipes, and a manifold that connects the main valve and the plurality of sub-valves in parallel and enables the main valve and the plurality of sub-valves to be consecutively provided and configured in a single assembly form.

A device for controlling a combustible gas supply to a heating apparatus burner includes: a valve with a respective valve seat which is associated with a corresponding closure member provided with a respective control rod for opening the valve seat, a system for amplifying movement of the control rod which has a snap-fit spring which acts on the rod and a pushing element which in turn acts on the spring, a first end of a lever acts on the pushing element which is hinged at a fulcrum location which is positioned at an opposing second end of the lever, actuator which moves the lever, operationally associated with the lever in a position between the opposing lever ends to control the lever about the fulcrum location resulting in movement of the closure member away from and towards the valve seat, the actuator comprising a linear actuator element with converse piezoelectric effect.

Disclosed is a gas furnace for indoor heating. The gas furnace includes a burner to generate high-temperature exhaust gas, an exhaust flow path, a blower to suction indoor air through a recovery flow path, a supply flow path to guide the indoor air to the indoor space after undergoing heat exchange in the exhaust flow path, and a fuel supply unit including a fuel supply line and a fuel discharge line, configured to supply fuel to the burner, and a valve between the fuel supply line and the fuel discharge line. The valve includes a step motor, and a blocking member coupled to a rotating shaft of the step motor and configured to move straight via by driving of the step motor, and an opening degree of the valve between the fuel supply line and the fuel discharge line is adjusted by the straight movement of the blocking member.