摘要:
A heating appliance including a firebox having an inlet and an outlet, the firebox inlet and outlet in communication with a space containing ambient air and within which the appliance is located. A gas burner is disposed within the firebox and provides a flame, the flame supported by ambient air entering the firebox through the firebox inlet, the flame producing products of combustion which exit the firebox throught the firebox outlet. A catalyst element is in communication with the firebox outlet, and at least a portion of the products of combustion which exit the firebox through the firebox outlet are directed through the catalyst element. At least some of the products of combustion directed through the catalyst element are catalyzed, the catalyzed products of combustion being directed into the space in which the appliance is located. A plenum is in thermal communication with the firebox. Ambient air received from the space in which the appliance is located is conveyed through the plenum, the plenum having an outlet from which the air conveyed through the plenum is directed into the space in which the applicance is located. The ambient air being conveyed through the plenum is substantially out of fluid communication with the catalyzed products of combustion within the appliance.
摘要:
A mixture fitting for use in a combustible gas system, for example, a fireplace. The mixture fitting may include a first portion configured to be coupled to a combustible gas source and a second portion configured to be coupled to a burner assembly. The first and second portions together form a gas passage. The mixture fitting also includes an air orifice extending from an exposed surface of the mixture fitting to the gas passage. The air orifice is configured to allow primary air to travel through the air orifice and into the gas passage to facilitate mixing of air with the combustible gas. Alternatively, the air orifice may be angled, and multiple air orifices may also be provided.
摘要:
A portable gas-fired cook stove is provided with readily assembled and disassembled legs, which facilitates shipping and storage of the cook stove. The legs are fastened to the stove body through a simple but very strong connection, which is capable of supporting loads well in excess of the weight of the cooking pot, food items, and cooking liquid. The cook stove can be disassembled and packaged with a nested cooking pot in a reduced-volume carton to reduce the space occupied by the carton during shipping and display.
摘要:
A gas-fueled heating appliance having a system for reducing the amount of undesirable combustion products released to the site in which the appliance is installed. The appliance includes a firebox partially surrounded by a heat exchanger. Ambient air is drawn into the heat exchanger below the firebox and a portion of the ambient air enters the firebox to assist in combustion, and the remaining portion travels through the heat exchanger to be heated by convection before being combined with combustion gases exiting through the top of the firebox. The heat exchanger creates a low pressure area relative to the firebox which induces a draft from the firebox into the heat exchanger and ultimately to the ambient environment through an exit provided above the firebox. A carbon monoxide catalyst element is provided in the exit passageway from the firebox to the heat exchanger to oxidize carbon monoxide into carbon dioxide and filter away airborne particulates which would otherwise be released to the ambient air.
摘要:
A synthetic ember comprising refractory ceramic wool coated with about 0.10 wt. % to about 5.0 wt. % of an oxidation catalyst of Pt, Pd, Rh, Co, Mn and mixtures thereof for use in small pieces as embers in a gas-fired log set or fireplace. The refractory ceramic wool preferably has a surface area of from 20 to 200 square meters per gram and a density of 0.01 to 0.05 grams per cubic centimeter and the catalytic embers are less than one inch square. The synthetic embers increase heat recoverable at a given BTU from a flame, with reduced nitrogen oxides, hydrocarbons and CO emissions and improved aesthetics.
摘要:
A broiler frame includes a broiler oven and a telescopic foot frame. The broiler oven is fixed with a securing rod under the bottom. The telescopic foot frame for the broiler oven to be rotatably mounted thereon is composed of a collapsible foot frame and a telescopic tube. The collapsible foot frame consists of a sleeve and a set of support tripod. The sleeve is provided with a position bolt and receives the telescopic tube in the interior. The securing rod of the broiler oven is rotatably inserted in the upper end of the telescopic tube. Thus, the broiler oven can be turned around for 360° in using, and the telescopic foot frame can be adjusted to a height suitable for a user to carry out broiling conveniently.
摘要:
This invention relates to heating apparatus and particularly compact heating apparatus fuelled by a flammable fluid such as gas in which a visible flame is provided. The appearance of the visible flame and the fireplace setting within the heating apparatus is enhanced by the provision of a reflective means positioned behind the fuel assembly to reflect an image of the assembly and/or the flame towards a viewing port in the front of the heater. Additionally or alternatively, the heater apparatus provides an exhausting of the emissions of the primary combustion directly into the room in which the heater is housed to return much of the otherwise exhausted heat into the room. The exhaust is put through a secondary combustion chamber including or comprising a catalytic converter before being exhausted into the room.