Abstract: A system including a variable orifice component including a main body, a main fuel path extending through the main body, and a control body positioned in the main body. The control body is movable between a first position wherein a first fuel path thereof is in fluid communication with the main fuel path to enable fuel to flow therethrough, and a second position wherein a second fuel path thereof is in fluid communication with the main fuel path to enable fuel to flow therethrough. The system further includes a vent body coupled to the main body. The vent body is movable between a first position wherein the main fuel path is in fluid communication with a vent orifice of the vent body to provide fluid communication between the main fuel path and a surrounding environment, and a second position wherein the main fuel path is not in fluid communication with the vent orifice.

Abstract: A burner assembly for a gas grill has a venturi tube for conveying gas to a burner. A burner tube has front and back manifolds, with the venturi tube connected to the front and back manifolds. A flow restrictor is placed at a connection interface between the burner tube and front manifold.

Abstract: Gas burner having at least two flame spreaders, at least one diffusion chamber between the flame spreaders for the diffusion of a primary air/gas mixture for at least one of the flame spreaders, and at least one cross-lighting duct for the flame passage between the flame spreaders. The duct is disposed transversally inside the diffusion chamber to define a first and a second region in the diffusion chamber and has two side walls and one upper wall, for the fluidic direct connection between the first and the second region of the diffusion chamber. The upper wall has at least one hole for the mixture inflow into the duct and the cross-lighting duct has at least one lower opening facing the upper wall of the cross-lighting duct.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) furnace has a venturi premixer and a disturber disposed downstream relative to the premixer and in an undivided output of the venturi premixer.

Abstract: A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.

Abstract: A dual fuel heating system can be used in a gas appliance. The system can have an air shutter to regulate an amount of air that can mix with the fuel for combustion. The air shutter can be configured to have different positions depending on the type of fuel to be used.

Abstract: A selector valve and shutter mechanism for use with a gas burner unit is disclosed. The valve includes a pilot gas manifold which is in communication with two pilot flames and associated ODS for two different kinds of gas fuel. The shutter mechanism opens or closes an opening to a burner mixing chamber to thereby adjust the flow of air into the mixing chamber depending on the fuel selected, and preferably is in the form of a sleeve that in one approach is rotatably mounted on a part of the burner mixing chamber, with a part of the sleeve covering the mixing chamber opening in one orientation and opening it to airflow in another orientation. A first gear is mounted on the sleeve which is engageable with a second gear mounted on part of the valve which is rotatable to one position or another depending on the gas fuel selected, the sleeve thereby adjusting the airflow to the mixing chamber in response to the valve position. In another approach, the cover moves linearly along the burner tube between orientations.

Abstract: A heating assembly can be used with one of a first fuel type or a second fuel type different than the first. The heating assembly can include housing have a first actuation member and a second actuation member. The first and second actuation members can be positioned within respective first and second fuel hook-ups. The first and second actuation members can be configured such that connecting a fuel source to the heater assembly moves one of the actuation members from a first position to a second position to control flow through the heating assembly.

Abstract: A heating assembly can include a gas hook-up and a pressure switch. The pressure switch can be in fluid communication with the gas hook-up and be movable at a predetermined threshold pressure from a first position to a second position. The pressure switch can be further configured such that if a fuel is connected to the gas hook-up that has a delivery pressure either above the predetermined threshold pressure in one situation or below the predetermined threshold pressure in another, the fuel will act on the pressure switch to move it from the first position to the second position.

Abstract: A heating assembly can be used in a dual fuel heater to mix air with fuel to be combusted at the burner. The heating assembly can include a burner, a first nozzle, a second nozzle, a first conduit and a second conduit. The first conduit can have an opening configured to allow air to mix with fuel injected into the first conduit by the first nozzle.

Abstract: In certain embodiments, a valve assembly can comprise a housing, a valve body, a first burner nozzle member and a second burner nozzle member. The housing can define an oxygen depletion sensor (ODS) inlet and a burner inlet. The valve body can be positioned within the housing and configured to rotate between a first position for a first fuel type and a second position for a second fuel type different from the first.

Abstract: A dual fuel heating source can have a dual entry valve unit with a main body at least partially defining a certain flow paths or channels therethrough. The dual entry valve can have first and second inlets and first and second outlets. The dual fuel heating source may also include a pressure regulator, an exit valve, a control valve and/or a manifold connected to the dual entry valve unit.

Abstract: Cooking appliance having an external control panel equipped with one or more regulating valves, where the rotary regulator organ is equipped with various peripheral openings for supplying a flow Q. For the supply of one or another type of gas, NG or LPG, either the control knob or a bezel disk in the external panel are interchangeable on the appliance, being chosen between two different available units, one and the other permitting two different angular position limits A2, A3 of the regulator organ or the supply of a constant flow Qmin through one or another opening with calibrated sections, respectively for NG or LP gas. An appendix in the control knob guided in a slide groove on the control panel of the appliance, or a tongue on the bezel disk stopping the rotation of the control knob, determines the travel limit A2 for the supply of Qmin of NG.

Abstract: A heater assembly can be used with a gas appliance. The gas appliance can be a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The heater assembly can include a housing, and an actuation member. The housing has a first fuel hook-up for connecting the first fuel type to the heater assembly, a second fuel hook-up for connecting the second fuel type to the heater assembly, and an internal valve. The actuation member can control the position of the internal valve based on whether the first or the second fuel hook-up is used.

Abstract: A gas valve unit for adjusting a volumetric gas flow supplied to a gas burner of a gas appliance, in particular a gas cooking appliance, includes at least two open/close valves which can be actuated by moving at least one magnetically active body, in particular a permanent magnet, relative to the open/close valves. For actuating an open/close valve, a position of the magnetically active body, which is preferably implemented in the form of a permanent magnet, can be varied relative to the shut-off body of the open/close valve.

Abstract: A heater assembly can be used with a gas appliance. The gas appliance can be a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The heater assembly can include at least one pressure regulator, a housing, and an actuation member. The housing has a first fuel hook-up for connecting the first fuel type to the heater assembly, and a second fuel hook-up for connecting the second fuel type to the heater assembly. The actuation member can control a flow through the heater assembly based on whether the first or the second fuel hook-up is used.

Abstract: In certain embodiments, a valve assembly can comprise a housing, a valve body and a nozzle. The housing can define a first inlet and a second inlet. The valve body can be positioned within the housing and configured to rotate between a first position for a first fuel type and a second position for a second fuel type different from the first. A control knob is operatively coupled to the valve body and to an air shutter such that rotation of the control knob controls the state of the valve body and the position of the air shutter.

Abstract: A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure. In some embodiments, a pressure regulator unit is configured to regulate the pressure of either the first fuel or the second fuel and to direct either the first fuel or the second fuel towards a combustion chamber. A nozzle assembly can be configured to inject the fuel into the combustion chamber.

Abstract: Regulation valve for a gas cooking appliance adapted for the supply of first and second different types of fuel gas, such as natural gas or liquefied gas. The regulation valve has a valve body with an inlet conduit and an outlet conduit, and a rotatable regulating organ housed in the valve body. The regulating organ has a plurality of inlet holes connected to the inlet conduit which, by means of the rotation of said regulating organ allow a gas flow to be altered, the inlet holes of the regulating organ corresponding to the first type of fuel gas are in a first axial position and the inlet holes corresponding to the second type of fuel gas are in a second axial position.

Abstract: In certain embodiments, a valve assembly includes a housing. The housing can define a first fuel intake, a first fuel output, and a second fuel output. The assembly can include a valve member configured to direct fuel from the first fuel intake to either the first fuel output or the second fuel output. The assembly can further include a nozzle having a first portion and a second portion. The first portion of the nozzle can be in communication with the first fuel output, and the second portion of the nozzle can be in communication with the second fuel output. The assembly can include a compartment in communication with the nozzle, and can include one or more air intakes.

Abstract: A dual fuel heating source can have a fuel selector valve for selecting between a first fuel and a second fuel different from the first. The dual fuel heating source may selectively have a regulator unit, and an outlet valve. The regulator unit can be configured to regulate the pressure of two different fuels. The outlet valve can be connected to the fuel selector valve such that selecting a fuel can determine the path fuel will flow through the outlet valve and also out of the heating source.

Abstract: The invention relates to a flat-flame vault burner (10) suitable for being installed in a vault (21) which delimits the combustion chamber (20) of a steel heating furnace, the burner (10) comprising a main metallic hollow cylindrical body (12), a single duct (13) for the conveyance of fuel gas concentric to the main body (12), and a central internal nozzle (14) for the injection of a fuel gas. Said burner also comprises at least two nozzles (17) outside said main body (12) for the injection of fuel into the combustion chamber (20).

Abstract: A heat engine can have a fuel selector valve for selecting between a first fuel and a second fuel. Making the selection with the fuel selector valve can also determine a flow path through the heat engine, there being two different paths, each configured for a different fuel. A burner nozzle can form a single unit with the fuel selector valve. In some embodiments the burner nozzle can also form a single unit with an outlet valve.

Abstract: A valve assembly can include a housing, which can define a first fuel input for receiving a first fuel from a first fuel source and a second fuel input for receiving a second fuel from a second fuel source. The housing can define a first fuel output for directing fuel toward a control valve, and can define a third fuel input for receiving a portion of either the first fuel or the second fuel from the control valve. The housing can define a first egress flow path and a second egress flow path, each for directing fuel to the burner. In certain embodiments, the apparatus includes a valve body configured to selectively permit fluid communication between the first and second inputs and the output and between the third input and the egress flow paths.

Abstract: A dual fuel heater (10) includes a pressure regulator converter (11) in fluid communication with a control valve which in turn is in fluid communication with a selector valve (40) through a NG/LP pilot line (48) having a splitter (49) to form a. NG pilot line (50) and a LP pilot line (51) extending to an LP pilot nozzle (67). The selector valve is moveable between an NG “on” position wherein fuel entering the selector valve passes to a burner (60) and to a NG pilot nozzle (65), and an NG “off” position (LP “on” position) wherein fuel passes to the burner and not to either the NG pilot nozzle or the LP nozzle. The NG pilot nozzle is oriented so that its flame heats the first thermocouple associated with the NG pilot nozzle and ignites fuel expelled form the LP pilot nozzle.

Abstract: A combustion apparatus 51 includes a plurality of burners 58, a plurality of fuel supply channels 89, a blower 53, an air supply passage 37, and a pressure regulator 56. The burners 58 are divided into a plurality of burner groups 71. The pressure regulator 56 is branched at a portion located immediately after a gas outlet 31 at downstream of the regulator 56 and connected to the respective fuel supply channels 89, so as to regulate gas supplied at a primary pressure to gas at a secondary pressure in response to a predetermined signal pressure sensed from one selected from a part of the air supply passage 37 and the blower 53 and to discharge the regulated gas through the pressure regulator 56. The fuel supply channels 89 each are configured to perform fuel supply to the respective burner groups 71 and are provided with a switching valve 75 for either shutting off or reducing the fuel supply to at least a part of the burner groups 71.

Abstract: A heater having first and second oxygen depletion sensors and a main burner injector and configurable for the delivery of at least first and second types of fuels.

Abstract: A gas valve unit for setting a gas volumetric flow to a twin-circuit gas burner of a gas appliance includes a valve body having a gas inlet and two gas outlets, and a control mechanism for adjusting the gas volumetric flow to at least one of the gas outlets in a multiple-stage manner. The control mechanism has a zero position in which the gas volumetric flow to the gas outlets is interrupted, and a switching position which is adjacent to the zero position and in which the gas volumetric flow is set to a maximum value.

Abstract: A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure. In some embodiments, a pressure regulator unit is configured to regulate the pressure of either the first fuel or the second fuel and to direct either the first fuel or the second fuel towards a combustion chamber. A nozzle assembly can be configured to inject the fuel into the combustion chamber.

Abstract: The invention provides systems and methods for multi-stage burners. The burner may accept a variable input fuel stream, which may be divided into a plurality of output fuel streams. The fuel stream may be divided by a pressure-actuated flow separator that may distribute an increasing amount of fuel to a secondary flow stream as the input flow rate of the input fuel stream increases. One or more of the output streams may be conditioned to provide a desired flame characteristic. The multi-stage burners may be decorative burners, and may be used for theatrical displays or other fire displays.

Abstract: In certain embodiments, an apparatus includes a control valve for regulating fuel flow. The apparatus can include a burner and a valve assembly. In some embodiments, the valve assembly includes a housing, which can define a first fuel input for receiving a first fuel from a first fuel source and a second fuel input for receiving a second fuel from a second fuel source. The housing can define a first fuel output for directing fuel toward the control valve, and can define a third fuel input for receiving a portion of either the first fuel or the second fuel from the control valve. The housing can define a first egress flow path and a second egress flow path, each for directing fuel to the burner. In certain embodiments, the apparatus includes a valve body configured to selectively permit fluid communication between the first and second inputs and the output and between the third input and the egress flow paths.

Abstract: A valve useful in distributing gas received in one inlet to several outlets in a sequence, and burner apparatus including this valve for feeding material in sequence to outlets of a burner thereby forming a non-stationary flame at the burner.

Abstract: A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure and can include an elongated tubular combustion chamber, a first combustion chamber nozzle outlet, a second combuston chamber nozzel outley, and a fluid flow controller. In some embodiments, the fluid flow controller is configured to direct the first fuel to the first combustion chamber nozzle outlet and then to the second combustion chamber nozzle ourlet when the controller is in a first position. In a second position, the fluid flow controller is configured to direct the second fuel to the second combustion chamber nozzle outlet.

Abstract: A heating apparatus for a heat exchanger system includes a manifold having a plurality of burners, a shutoff valve, a first controller and a second controller. The shutoff valve divides the manifold into a first manifold portion and a second manifold portion. The first controller selectively controls the communication of a fluid within the manifold. The second controller selectively actuates the shutoff valve between a first position and a second position to control a firing rate of the plurality of burners.

Abstract: A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure and can include a fluid flow controller. In some embodiments, the fluid flow controller is configured to permit flow of fuel to a first passageway and to direct a first fuel to a first oxygen depletion sensor line when the controller is in a first position and permit the flow of fuel to a second passageway and to direct a second fuel to a second oxygen depletion sensor line when the controller is in a second position.

Abstract: A heater having first and second oxygen depletion sensors and a main burner injector and configurable for the delivery of at least first and second types of fuels.

Abstract: A dual fuel vent free gas heater having at least one gas burner with a plurality of gas outlet ports. The gas outlet ports are in flow communication with at least one pilot flame burner. At least one fuel injector feeds fuel to the burner providing for introduction of more than one fuel to the burner. Optionally, an oxygen detection system, manual control valve, linkage, and/or shut off control system may be incorporated into the dual fuel vent free heater.

Abstract: In certain embodiments, a valve assembly includes a housing. The housing can define a first fuel input and a second fuel input. The housing can further define a first flow path, a second flow path, a third flow path, and a fourth flow path. The assembly can include a fluid flow controller configured to selectively permit fluid communication between the first fuel input and either the first flow path or the second flow path, and configured to selectively permit fluid communication between the second fuel input and either the third flow path or the fourth flow path. The assembly can further include a first nozzle member defining an inlet and an outlet. The inlet of the first nozzle member can be in fluid communication with the first flow path. The assembly can further include a second nozzle member defining an inlet and an outlet. The inlet of the second nozzle member can be in fluid communication with the second flow path.

Abstract: A heating apparatus for a heat exchanger system includes a manifold having a plurality of burners, a shutoff valve, a first controller and a second controller. The shutoff valve divides the manifold into a first manifold portion and a second manifold portion. The first controller selectively controls the communication of a fluid within the manifold. The second controller selectively actuates the shutoff valve between a first position and a second position to control a firing rate of the plurality of burners.

Abstract: A dual fuel heating source can have a fuel selector valve for selecting between a first fuel and a second fuel different from the first. The dual fuel heating source may selectively have a regulator unit, and an outlet valve. The regulator unit can be configured to regulate the pressure of two different fuels. The outlet valve can be connected to the fuel selector valve such that selecting a fuel can determine the path fuel will flow through the outlet valve and also out of the heating source.

Abstract: An object of the present invention is to provide a combustion apparatus equipped with a pilot burner and a main burner capable of establishing a stable combustion state without involving generation of CO and unburned substances at the main burner even when the supply of a gas fuel to the pilot burner is stopped. A combustion apparatus equipped with a pilot burner and a main burner according to the present invention is characterized in that, when the main burner is in a combustion state, the amount of air supplied to the pilot burner can be adjusted. Here, the amount of air supplied to the pilot burner is an amount allowing the pilot burner to be cooled.

Abstract: The smokeless liquid two-phase burner system of the present invention relates to a method and apparatus for burning a wide variety of flammable liquids using an integrated burner system. The system has both a primary injection path and an alternate injection path for the fuel to be burned, as well as a main air pump or blower. The present invention also provides a method and apparatus for selectably injecting a secondary stream of a gas or vapor or volatile liquid into a flare system for the purpose of enhancing combustion. The apparatus is self-contained and self erecting on a transportable trailer.

Abstract: Certain embodiments of a nozzle are configured to dispense a first gas, liquid, or combination thereof at a first pressure in a first mode of operation and dispense a second gas, liquid, or combination thereof at a second pressure in a second mode of operation. In some embodiments, the nozzle is integrated in a heat-producing device, such as, for example, a heater, a fireplace, or a stove. In some embodiments, the heat-producing device including the nozzle can operate with a first combustible fuel at a first pressure, or alternatively, can operate with a second combustible fuel at a second pressure. In some embodiments, the nozzle is used in applications other than heat-producing devices.

Abstract: The present invention provides an apparatus and method for providing multiple stages of fuel. A burner assembly having a face for production of a flame and a plurality of longitudinally adjacent chambers opening to the face. A divider is provided that splits the burner chambers into two separate sections in such a manner that one section includes burner chambers greater in number than the other section. The first section can be ignited solely. Thereafter, the second section can be ignited. Once the second section is ignited, the first section may be optionally turned off.

Abstract: A burner system for a gas-burning cooking appliance includes an integrated valve which provides gas flow to both a pilot burner and a main burner. The integrated valve includes a main line valve to mechanically regulate the gas flow to the main burner, and a separate pilot line valve to mechanically regulate the gas flow to the pilot burner. The operations of the two valves are independent such that the operation of one valve does not regulate gas flow to the line controlled by the other valve.

Abstract: An interchangeable piezoelectric lighter includes a casing having a switcher cavity and a valve switcher rotatably received in the switcher cavity wherein the valve switcher includes at least two gas nozzles axially provided therein. The gas nozzles are adapted for selectively and coaxially aligning with a gas valve for producing different types flames. Therefore, by rotatably switching the valve switcher, the gas valve is adapted to align with the respective gas nozzle for a releasing gas passing therethrough, so as to produce a desired type of flame.

Abstract: A lighter includes a flint igniter igniting a flame positioned adjacent to a torch nozzle thereof to light up gas emitted from the torch nozzle to form a torch in which the gas released from a gas container of the lighter is distributed to have portion emitted from a flame outlet for producing the flame while the other portion is emitted from the torch nozzle and ignited by the flame produced at the flame outlet. After lighting up the gas to form the torch, the gas from the flame outlet is blocked to stop the ignition flame.

Abstract: The gas distribution assembly (1) is adapted for the supply of a gas flow (G) to a cooking appliance with top burners, and comprises a straight tubular-shaped manifold conduit. (2) and various rotary taps (C1–C4) provided with an arched mounting base, which are superimposed in twos opposite to each other on a tubular part (2b) of the manifold, and fixed by means of common screws (10). The tap drive shafts (16) stand out from the horizontal cooking plane (CP) occupying a small-sized square geometric area (D×D) . A supporting leg (12) for the distribution assembly (1) is made of a plate folded and fixed on a horizontal structural base (SB), the gas feeder nipple (3) being connected to a central hollow part (2a) of the manifold, extended in a direction opposite to that of the drive shafts (16).

Abstract: A temperature-controlled fuel valve, especially for a fuel-operated heating burner of a vehicle heating system has at least one valve member (40) that is adjustable as a function of a temperature in the area of a heating burner (30).

Abstract: A multiple-flame lighter, including: a lighter housing, a storage having an outlet valve, an inlet valve and a gas chamber for storing liquid fuel gas, a gas outlet control bar for controlling gas supply from said storage, and a windproof assembly connected to the gas pass of the storage, characterized in that it also includes: an electronic igniter, a flint igniter, an ignition controller, wherein between the sleeve and the windproof assembly there is provided with a flint igniter which is adjacent to the sleeve and a flame outlet which is connected to the gas pass of the storage. The single one lighter is simple in structure and may achieve powerful windproof effect and has advantages of long time service life, luminous application and less heat generation.