Portable grills are disclosed. An example portable grill movable between an erected configuration and a collapsed configuration includes a frame, a leg unit, and a leg lock assembly. The leg unit is movably coupled to the frame. The leg unit includes a first leg and a second leg spaced apart from the first leg. The leg lock assembly is operatively coupled to the leg unit and located partially within the frame. The leg lock assembly is configured to lock the leg unit in a first position relative to the frame when the portable grill is in the erected configuration, and to unlock the leg unit from the first position to enable movement of the portable grill from the erected configuration into the collapsed configuration.

Portable grills are disclosed. An example portable grill includes a cookbox, a lid, a cooking grate, and a grate retainer. The lid is movably coupled to the cookbox, and is movable relative to the cookbox between a closed position and an open position. The lid and the cookbox define a cooking chamber when the lid is in the closed position. The cooking grate is located within the cooking chamber and supported by the cookbox. The cooking grate is movable relative to the cookbox when the lid is in the open position. The grate retainer is coupled to the lid, and extends inwardly from an inner surface of the lid. The grate retainer is configured to restrict movement of the cooking grate relative to the cookbox when the lid is in the closed position.

A joint, a knob assembly, and an appliance having a joint and a knob assembly are provided. The joint may include a housing, a first shaft support, a second shaft support, and a coupling shaft. A slot having a predetermined width extending in a circumferential direction of the housing and a predetermined length extending in a longitudinal direction of the housing may be formed in the housing. The coupling shaft provided in the second support may include a rotary shaft rotatably inserted into the slot. A stopper may be formed to protrude from an outside of the rotary shaft, and a position of the stopper inside the slot may be changed according to rotation of the rotating shaft. The stopper may be provided in the slot so that the stopper interferes with an inner wall of the housing formed by the slot at a predetermined position.

A regulating valve with at least one gas outlet conduit and a housing having at least one outlet hole in fluid communication with the outlet conduit; a rotating disc arranged in the housing; a spring axially retaining the rotating disc in the housing; and sealing means surrounding the at least one outlet hole. The sealing means includes a gasket having a closure member associated with each outlet hole, surrounding the same, and at least one attachment arm attached to the at least one closure member. The attachment arm including at least one protuberance, with the rotating disc being supported on the closure members and on the protuberances when it presses on the gasket.

A fuel metering system includes a metering valve having a first inlet fluidly coupled to a source of fluid at a first pressure, a second inlet, a first outlet and a second outlet. The metering valve includes a slot, and a valve body movable to control an amount of fluid supplied to the first and second outlet. The fuel metering system includes a servo valve fluidly coupled to the second inlet and to a second source of fluid at a second pressure. The servo valve is in fluid communication with the second inlet and a body of the servo valve is movable to supply a fluid to move the valve body. The slot is configured to variably restrict the flow of the fluid through the second outlet to balance a force applied by a biasing member. The fuel metering system includes a fixed flow restriction downstream of the second outlet.

Methods and systems for a flame display may comprise flowing fuel from a fuel source to a burner via an electric valve fuel passage that includes an electric valve and via a mechanical valve fuel passage that includes a mechanical valve, receiving a flame boost mode request, and adjusting the electric valve to a wide open position. The flame display may further be operated in a music mode in which the electric valve is adjusted based on an audio input or in a standard mode.

The disclosed technology includes a gas delivery system for controlling a target gas input rate of a fluid heating device. The system can include a sensor configured to measure a temperature of a gas flowing in a gas flow path, a modulating orifice in fluid communication with the gas flow path, and a motor in mechanical communication with the modulating orifice. The system can further include a controller configured to receive temperature data indicative of the temperature of the gas. The controller can determine a target cross-sectional area of the modulating orifice based at least in part on the target gas input rate and the temperature of the gas and, in response, output a signal to the motor to transition the modulating orifice from a first position to a second position having the target cross-sectional area.

A heating device as well as a method for the operation thereof. The heating device has an outer housing that surrounds an installation space. The components of heating device are arranged inside or on the outer housing, particularly a burner unit, a fan, a fuel valve and as an option a circulation pump. At least one of these units comprises at least one electrical and/or electronic component. On one or more of the anyway present electrical and/or electronic components at least one gas sensor is arranged on the outer housing and/or inside the installation space, particularly on a support or a circuit board of the respective electrical and/or electronic component. The at least one gas sensor is configured to create a sensor signal that describes the presence and/or concentration of at least one gas component in the atmosphere. Based thereon leakages, faults, undesired backflow, etc. can be determined. Thereupon a respective measure can be initiated, e.g. the output of a warning message and/or suction of the atmosphere by means of fan.

The present invention discloses a regulating mechanism regulating the flows from a plurality of gas outlets in a fuel gas valve, comprising an actuator, a push rod, a presser plate assembly, regulating rods and a valve body. Wherein the valve body has a plurality of gas outlets, a regulating rod is provided in each regulating port which exists between the gas inlet and each gas outlet, a resetting device is provided between each regulating rod and the valve body, and the actuator drives the push rod which is around by the regulating ports to move along the axis. The push rod causes the presser plate assembly to move up and down to press or relax the regulating rods and simultaneously change the degree of opening between the head portion of each regulating rod and the corresponding regulating port so that the flow from each gas outlet changes synchronously.

According to one embodiment a gas tap is provided that includes a manually operable shaft having a first end coupled to a regulating element and a second end configured to be coupled to a knob that can be operated by a user. The shaft includes a first locking element, and the gas tap includes a second locking element. The shaft is rotational between an initial angular position and a final angular position, and is axially movable when it is arranged in the initial angular position between a first axial position in which the first locking element and the second locking element cooperate with one another, preventing the shaft from being able to rotate, and a second axial position in which the shaft is able to rotate. The user has to pull on the shaft in order to move it from the first axial position to the second axial position.