Abstract: A fired heater includes a fired heater body with an air inlet and a flue gas outlet, and a flue gas waste heat recovery system communicated with the fired heater body and including at least two heat exchange chambers. A first port of each of the heat exchange chambers can be communicated with the flue gas outlet or the air inlet, and a second port of each of the heat exchange chambers can be communicated with the outside air or a fume extractor. When the first port of at least one heat exchanger chamber is communicated with the flue gas outlet and the second port thereof is communicated with the fume extractor, the first port of at least another heat exchange chamber is communicated with the air inlet and the second port thereof is communicated with the outside air.

Abstract: An air/gas premix burner is disclosed. The air/gas premix burner includes a fan for sending an air/gas mixture towards a combustion head and a gas valve for regulating the introduction of combustible gas. The air/gas premix burner also includes an air/gas mixer, which comprises a localized pressure loss device, and a combustion head. The air/gas mixer includes two channels. One of the channels is provided with two hinged flaps that are designed to open and close for regulating the flow rate of the mixture.

Abstract: A portable and collapsible stove and lantern allowing clean combustion of biomass fuels found in the natural environment comprises a top member, a transparent member, a support member having an orifice and a plurality of windows, a chamber having a plurality of top and bottom openings and a mesh to support biomass fuels, and a main body having an insulation member, a reflecting member and a plurality of middle openings. When used, the transparent member is disposed within the support member that is disposed on top of the chamber which is then disposed within the main body, and the top member is disposed on top of the support member. Air drawn into the main body by the plurality of middle openings is further drawn into the chamber by the pluralities of top and bottom openings, mixed with fuels for combustion, producing flame into the support member through the orifice.

Abstract: The invention relates to a field of open-flow solar collectors, and specifically to flat solar collectors with wetting the underneath sides of their solar radiation absorbing plates with liquid heat transfer medium. More specifically, the invention proposes the flat solar collector, which operates with relatively low flow rate of the heat transfer medium on the underneath side of the solar radiation absorbing plate, with flow in form of some rivulets. The invention describes some technical solutions, which restrict meandering rivulets' flow. The proposed flat solar collector can be applied for heating water or other liquids and for evaporation and concentration of aqueous solutions.

Abstract: A gaseous fuel-oxygen burner is described herein. One device includes a flame zone in which combustion of gaseous fuel and oxygen occurs to form a flame, a coaxial gaseous fuel jet configured to provide the flame zone with gaseous fuel, and a coaxial oxygen jet configured to provide the flame zone with oxygen, wherein the coaxial gaseous fuel jet and the coaxial oxygen jet are separate such that the gaseous fuel from the coaxial gaseous fuel jet and the oxygen from the coaxial oxygen jet do not mix before entering the flame zone.

Abstract: A solar cooking appliance comprises a solar heat collector for collecting and storing solar heat. A first solid heat storage and conducting material for storing and conducting solar heat, the solid heat storage and conducting material is placed within the solar heat collector, the solar heat collector heats the solid heat storage and conducting material to a temperature higher than the water boiling temperature. A heat insulated solar cooking utensil is positioned outside of the solar heat collector, having a cooking utensil and a heat insulation. A second heat-transferring and conducting material connected thermally to the first solid heat storage and conducting material to the heat insulated solar cooking utensil for transferring solar heat.

Abstract: A fire-resistant collapsible enclosure can include three or more sidewalls coupled with a cross plate internal to the enclosure. A top portion of the enclosure can include a non-linear edge configured to be an airflow outlet, or a bottom portion of the enclosure can include a non-linear edge configured to be an airflow outlet. The fire-resistant collapsible enclosure can be configured for use as an oven, a stove, or a smoker. In an example, two or more of the fire-resistant collapsible enclosures can be used together, such as where one enclosure is configured as a heat source and a second enclosure is configured as a smoker. In an example, the cross plate can include a throttle to control airflow through the enclosure.

Abstract: Apparatus for a concentrating solar collector is disclosed, comprising: A nested main frame and reflector carriage with vertically folding one-piece preformed reflector support panels, to which individually replaceable pieces of mirror-like material of various kinds may be mounted to make a Fresnel-type array. A hand-winch operated cable system provides for a full range of reflector altitude adjustment. An alignment guide allows assessment of solar tracking alignment without gazing toward the focal area. A griddle-like flattop receiver is used for frying foods, and an adjustable rack facilitates suspension of cooking pots in the focal area to receive unobstructed, concentrated solar energy. Also described is a method for making the reflector support panels. One embodiment of the apparatus has a lower frame portion substantially forming a rolling chassis. An additional embodiment describes lower frame structure for a fixed location installation.

Abstract: A substantially planar wick is formed with a two- or three-dimensional pattern. The contours of this pattern are determined by the desired flame characteristics or the desired visual aesthetics of the pattern itself.

Abstract: A structure which performs safety operation with certainty when a gas container is replaced or when an abnormality occurs and is easy to used is provided. A cartridge-type gas grill 11 having a plurality of systems includes two gas container accommodation sections 12; two burners 13; and gas flow paths for connecting the gas container accommodation sections 12and the burners 13 in a one-to-one relationship. All the gas container accommodation sections 12 are each provided with a container attachment switch 19 for detecting that a gas container 15 is connected. Open/close valves 18, provided in the gas flow paths, for adjusting a gas flow are each formed of an electromagnetic valve. Operation knobs 63 each for making an operation on the corresponding open/close valve 18 are each provided with an ignition switch 20, which is turned ON when the corresponding open/close valve 18 is opened and is turned OFF when the corresponding open/close valve 18 is closed.

Abstract: A gas burner with inward-facing flames has a base body disposed under a cooktop and a discoid lid disposed onto the base body. The base body has a central chamber connected to a horizontal Venturi tube fed by a gas injector. A peripheral annular chamber and partitions-defining apertures provide communication between the central chamber and the peripheral annular chamber. The lid has a central dish disposed onto the central chamber of the base body, an intermediate toroidal portion disposed onto the partitions of the base body, and a flame ring disposed onto the peripheral annular chamber for propagation of flame inwards.

Abstract: Gas burner for domestic use, of the type comprising at least one Venturi effect mixer in fluid connection with at least one combustion mixture distribution chamber and with at least one flame spreader associated with said distribution chamber, in addition to first means for preventing flame propagation of the fluid flow splitting type. Advantageously, the above-mentioned first preventing means is arranged downstream of the Venturi effect mixer and upstream of the combustion mixture distribution chamber, separating said Venturi effect mixer from the distribution chamber.

Abstract: A method for improving the performance of a radiating burner designed to be supplied during operation by means of a flow (F) comprising a mixture of air and combustible gas. The burner includes a body defining a combustion chamber and provided with an inlet for the mixture; a porous wicking agent closes off the chamber in a non-sealing manner and is arranged downstream of the inlet in the direction of flow (F) of the mixture; and a distribution grid is arranged between the mixture inlet and the wicking agent. The method includes creating an electric field in the combustion chamber by applying an electric potential difference of at least 5 kV between the wicking agent and the distribution grid.

Abstract: A burner retraction system includes a mounting assembly having a mounting sleeve, an insertion assembly having a tubular sleeve including an insertion portion sized and shaped for insertion into the mounting sleeve and an opening therethrough, a pivot rod rigidly mounted to and extending rearwardly from the mounting plate, and a pivot assembly rigidly mounted to the insertion sleeve and including a pivot tube surrounding and coaxially rotatable about the pivot rod, one of the pivot rod and the pivot tube having a slot including a straight axially extending portion and an angled portion extending rearwardly from the straight portion at an angle ?, and a stop pin slidably inserted into the slot in the one of the pivot rod and the pivot tube, the stop pin being secured to the other of the pivot rod and the pivot tube.

Abstract: Polymeric sheets suitable for use as solar concentrators in solar thermal devices are provided. Also provided are solar thermal devices incorporating the polymeric sheets. The polymeric sheets have two oppositely facing surfaces. A first pattern is defined in the first surface and a second pattern is defined in the second surface. The first pattern is designed to reduce the reflectance of light incident upon the first surface relative to the first surface in the absence of the first pattern and to channel incident light through the sheet onto the second surface. It does so by redirecting photons incident upon the first surface over a broad range of incident angles into transmittance angles that are more closely aligned with the surface normal of the polymeric sheet. The second pattern is designed to focus the photons transmitted to the second surface of the sheet onto a focal surface, such as a receptacle containing a heat-transfer medium.

Abstract: The present invention is an adaptation of the common container candle lid. The lid is transparent or translucent and it is hollow. The lid contains at least one piece of two-dimensional material that is applied to the interior surface of the lid, thereby giving the material a three-dimensional presentation. The material is held in place by foam that also holds, in the mouth of the candle lid, at least one LED and the components necessary to energize the LED when desired.

Abstract: An assembly for controlling the flow of a gas to a gas burner. The assembly including a rotational regulating valve and an electromagnetic safety valve. The regulating valve is rotational between a first angular position corresponding to a closed position and a second angular position corresponding to an open position. The safety valve includes a valve member that translates axially between a first axial position corresponding to a closed position and a second axial position corresponding to an open position.

Abstract: The present invention provides for operation of a sensor directed toward a cooking surface positioned beneath the sensor. If a cooking utensil is detected on the cooking surface, a fan is operated to direct a flow of air over the sensing end of the sensor to protect or shield it during cooking operations.

Abstract: A barbeque cooking system is disclosed. The system includes heating modules expandably connected together and movable between a closed state and an open state. The heating modules define an internal cooking volume when in the open state. The system further includes a frame removably connected to the heating modules to retain the heating modules in the open state. Each heating module supports a heat source. The heating modules direct heat from the heat source radially inward to a center of the cooking volume.

Abstract: A cooking appliance is disclosed, comprising a wall-mounted cooking chamber, i.e. oven, with a bottom-opening door and separate countertop control panel, which facilitates use by individuals with disabilities, injuries or limited mobility, such as wheelchair users. The oven is wall-mounted, at a convenient distance, above a kitchen countertop, leaving a useful area of countertop underneath. Advantageously, it includes a low profile motor driven lift mechanism, housed against the wall beneath the oven and comprising guide rails for lowering the door to counter level and raising it to the closed, cooking position. The door provides a platform for items to be cooked. When lowered to counter level, a user can slide dishes between the platform and the adjacent countertop, without need for lifting as in a conventional stove or wall-mounted oven. An easy to reach, counter-level control unit enables the user to control oven functions including raising/lowering the door.