Abstract: A cooking appliance includes a cabinet; a cooking chamber positioned within the cabinet; a cooling duct positioned within the cabinet above the cooking chamber and configured to accommodate a main cooling airflow therethrough, the cooling duct defining a main inlet at a front of the appliance, an outlet at a rear of the appliance, and one or more auxiliary inlets disposed along a length of the cooling duct; and a fan adapted to motivate the main cooling airflow. The one or more auxiliary inlets includes a rear inlet disposed adjacent to a rear panel of the cabinet.

Abstract: An apparatus for lighting a burner of a heat exchanger includes a mounting plate configured to be mounted to the heat exchanger, the mounting plate including a first and second opening, a pilot ignition rod assembly installed in the first opening, the pilot ignition rod assembly including a flame ionization rod and a terminal, and a sleeve coupled to and aligned with the second opening and configured to extend substantially through a refractory material lining a combustion chamber of the heat exchanger, the sleeve being joined to a ground rod on a distal end and a gas orifice mount on a proximal end, the gas orifice mount including a gas venturi surrounded by the sleeve, wherein the sleeve is sized to extend from the mounting plate through an opening in the refractory material lining the combustion chamber, wherein the sleeve includes a sleeve opening adjacent to the gas venturi, the sleeve opening configured to allow air from the combustion chamber to the gas venturi.

Abstract: A furnace for a heating, ventilation, and/or air conditioning (HVAC) system includes a heat exchanger tube including a tube inlet and a tube outlet, such that the heat exchanger tube is configured to receive combustion products via the tube inlet, circulate the combustion products through the heat exchanger tube, and discharge the combustion products via the tube outlet. Additionally, the furnace includes a collector box coupled to the heat exchanger tube and having a cavity configured to receive the combustion products via the tube outlet. The furnace includes a diverter plate disposed within the cavity, where the diverter plate overlaps the tube outlet to disperse the combustion products received via the tube outlet throughout the collector box.

Abstract: A heat exchanger including a gas inlet through which a combustion gas flows in and a gas outlet through which the combustion gas flows out is provided. The heat exchanger includes a housing in which the gas outlet is formed, a partition member, and a plurality of heat transfer tubes accommodated in the housing. The partition member is mounted in the housing so that there is a portion in which a flow area of the combustion gas is smaller than that of the gas inlet between the gas inlet and the gas outlet.

Abstract: An electronically controlled burner management system for oilfield separators. The system includes an autonomous standing pilot spark ignition that includes a self-aligning clamp that holds the igniter to the burner nozzle. The self-aligning clamp enables rapid installation and removal, lowering the total cost of ownership. The autonomous spark ignition system incorporates temperature sensors to determine when the standing pilot needs to be relit, and can shut off the gas or other fuel flow to the standing pilot and the main burner when the pilot is not lit. The system increases oil and gas production from the well, reduces fugitive emissions of unburned gas, and improves oilfield worker safety. When installed or retrofitted into an existing oilfield separator, the original burner control components are left in place, allowing the user to revert to traditional operation in case of failure of any electronic component of the present system.

Abstract: Embodiments of the present disclosure are directed to a furnace that includes a blower configured to operate to force a fluid through the furnace, a motor having a rated speed, in which the motor is coupled to and configured to actuate the blower, and a controller configured to receive data indicative of an operating characteristic of the furnace and regulate operation of the motor to be at or below an operational speed limit. The controller is configured to set the operational speed limit based on the data indicative of the operating characteristic of the furnace, such that the operational speed limit is less than or equal to the rated speed of the motor.

Abstract: One or more techniques and/or systems are disclosed for an ignition control module for a gas appliance. The housing of the ignition control module, and/or the mounting points for mounting the module to a gas appliance, can be configured to dispose the battery in a manner that provides for potential battery leakage to flow away from most operable components of the module. Further, the ignitor connection terminals can be configured to provide for ease of connection, by providing a connector guide disposed in a cylindrically shaped terminal housing. Additionally, an ignitor actuator terminal can be configured to selectable engage with an ignitor actuator connector, where the ignitor actuator terminal comprises at least two connector points that engage with a single ignitor actuator connector.

Abstract: A combustion head for burners, comprising an outer tubular body for channeling combustion air, an inner tubular body for channeling a fuel and a diffuser extending between the inner tubular body and the outer tubular body, said diffuser being disc-shaped and defining a slot for passage of the air between said diffuser and the outer tubular body. The outer tubular body has a lip 15 converging towards the main axis at the emission portion so as to define a narrowing of said slot for passage of the combustion air, so that for predefined flow rates of fuel and combustion air, the ratio of the velocity of the exiting fuel to the velocity of the combustion air exiting from the passage slot ranges between 1.8 and 3.

Abstract: An adjustable camera assembly mounted within a door of an oven appliance includes a vertical guide rail and a camera movably mounted to the guide rail. A drive mechanism, such as a lead screw driven by a stepper motor, is mechanically coupled to the camera for moving the camera along the guide rail. A heat shield is positioned proximate a bottom of the door and extends around the guide rail to define a protective cavity for receiving the camera and providing a thermal break from a heating element of the oven appliance. A controller is configured for moving the camera into the protective cavity during high temperature operation of the oven appliance, such as during a self-clean cycle.

Abstract: A cooking burner includes a spreader defining a first side wall defining an outer profile having first and second extension sections opposed about a first axis. The spreader further defines first and second arced sections, each extending outwardly along a second axis perpendicular to the first axis from and between parallel straight segments of the first and second extension sections, respectively. The spreader further defines a second side wall disposed inwardly of and concentric with the first and second arced sections and a plurality of fuel outlets extending through both the first side wall and the second side wall. A circular inner cap is assembled with an upper portion of the circular inner profile, an annular outer cap is assembled with respective upper portions of the first and second arced sections, and first and second extension caps assembled with respective upper portions of the first and second extension sections.

Abstract: A premixing apparatus includes a mixing unit, an air supply adjusting unit, and a gas switching unit. The mixing unit draws a fuel gas in the mixing unit by supplied air to mix the fuel gas and the supplied air with each other. The air supply adjusting unit applies a load on the supplied air flowing toward the mixing unit and switches the load. The gas switching unit switches a gas amount of the fuel gas to be supplied to the mixing unit.

Abstract: The present inventions provide, among other things, tapered burner tubes having raised gas ports and a smooth interior surface free from obstructions. Venturi members creating a smooth flow of the gas/air mixture along the top of the burner tube are also provided.

Abstract: A method and apparatus worn by a user for controlling weeds using concentrated solar energy is disclosed. Solar energy may be concentrated by Fresnel lens over the wearer and directed by manual methods by the wearer at surfaces of weed plants to heat portions thereof causing damage. Shutters or other devices may be used to direct, and control intensity of concentrated, solar energy, such control preferably applied before significant concentration of the solar energy. In some embodiments, solar energy concentration apparatus may be integrated with solar photovoltaic cells for generating electric power for purposes such as an electrical temperature sensor, a camera and video display device for viewing underneath a crop canopy, control of solar intensity and other purposes.

Abstract: A home cooking appliance includes a rear vent trim at a rear side of the top of the housing that is configured to guide flue gases exiting from an exhaust channel of a cooking compartment in an upward direction out of the housing. The rear vent trim includes a body, a back panel closing a rear side of the body, and a heat shield disposed between the back panel and the flue gases flowing in the rear vent trim. The heat shield is spaced from the back panel and forms an air gap between the back panel and the heat shield.

Abstract: Systems and methods are disclosed that include providing a cooking system that comprises a burner assembly and a heat exchanger, the burner assembly having a high velocity burner configured to provide the necessary high velocity, volumetric flowrate through the heat exchanger, and the burner assembly also having a low velocity burner configured to significantly reduce and/or substantially eliminate “lift off” that could result from operation of only the high velocity burner.

Abstract: A domestic cooking appliance includes: a main housing; a cooking compartment; a gas burner that provides heat to the cooking compartment; a cooling air passageway located between the cooking compartment and a rear wall of the main housing, the cooling air passageway being separated from the cooking compartment by a rear wall of the cooking compartment; and a gas flue. The gas flue has an exhaust gas inlet open to the cooking chamber, the exhaust inlet being located in a lower panel of the gas flue, a cooling air inlet open to the cooling air passageway, an outlet located above the exhaust gas inlet, above the cooling air inlet, and above an uppermost portion of the cooking compartment, and an upper deflector located above the outlet and angled relative to vertical at a non-zero first angle such that the upper deflector extends over at least a portion of the outlet.

Abstract: An apparatus may comprise a first carrier tube having a first input end and a first output end and a second carrier tube disposed substantially parallel to the first carrier tube and having a second input end and a second output end. A cross tube may be coupled to the first carrier tube and the second carrier tube and may be disposed substantially perpendicularly between the carrier tubes. A plurality of burner holes may be disposed along the first carrier tube, the second carrier tube, and the cross tube. A plurality of flame sensors may be disposed at various locations of the first carrier tube and the second carrier tube. A first igniter assembly may further be coupled to the first carrier tube.

Abstract: A heating appliance (1) comprises a main body (2) having a fire-box (9) with an opening (10) for placing combustible fuel (11) therein with which the heating appliance (1) is used. The heating appliance (1) has a fire door (3) for closing the opening (10), and a movable baffle (4). The baffle (4) is placable in a first position in which it is disposed in a front part of the fire-box (9), it is behind the fire door (3), and it forms a shield for the combustible fuel (11).

Abstract: Combined burner for blowing oxidizing gas and fuel into melting furnace, which is fixedly installed into the furnace and provided with outlet apertures for fuel and oxidizing gas, consists, according to this invention, of fixed part (2) of the burner (1) and of a movable nozzle (4), which is rotatably installed inside the body (2.1) of the fixed part (2) of the burner, supply (7) of the oxidizing gas is connected to the movable nozzle (4) and it is controlled by actuator (3), installed outside of the working space of the furnace, while the axis x2 of the orifice of the movable nozzle (4) is diverted from the rotation axis x1 of the movable nozzle (4) by angle a in the range of 5-60° and the movable nozzle (4) is rotatable around the axis X1 in any direction by angle ? in the range of 0-180°. The movable nozzle allows directing blown gases into various places in the furnace.

Abstract: The present invention relates to a solar selective coating for a metal substrate comprising at least one absorber layer and at least one semi-absorber layer selected from the structures of AlTiN and AlTiSiN. In preferred embodiments, the solar selective coating according to the present invention is a double layer coating with AlTiN—AlTiN or AlTiSiN—AlTiSiN formation. The process for producing the coating includes a step of treatment of the metal substrate with a reactive magnetron sputtering system.