Abstract: A damper system for an exhaust vent of a gas operated oven includes a temperature-reactive member configured to expand when actuated by heating to a predetermined temperature, and a damper member coupled to the temperature-reactive member, the damper member configured to move with the expansion of the temperature-reactive member to control a size of an opening to the exhaust vent from the gas operated oven.

Abstract: A fireplace assembly is disclosed and includes a smoke chamber, a firebox, a throat in fluid communication with and linking the smoke chamber and the insulated firebox and a divider positioned within said throat and defining a front air channel and a rear air channel within the throat. The fireplace assembly of the present invention offers reductions in particulate emissions when compared to traditional open-burning fireplaces and has comparable particulate emissions to wood stoves and built-in wood stoves.

Abstract: The room heater has, in an outer case 1, both a first air flow passage that leads to a vent hole 12 through a section in which the main heat exchanger 6 is arranged and a second air flow passage that does not pass through the section in which the main heat exchanger 6 is arranged but leads to the vent hole 12 through a section in which a supplementary heat exchanger 6? is arranged provided. At least one of the first damper 20 which can freely block the first air flow passage and the second damper 21 which can freely block the second air flow passage is provided, and the first air flow passage or the second air flow passage is blocked in a weak combustion period.

Abstract: An exemplary heating system can be configured with a control system configured for controlling the heating system to reduce inefficiencies, and/or allow the heating system to operate in a relatively optimum manner. In accordance with an exemplary embodiment, a closed-loop control system may be configured to control various portions of the heating system based, at least in part, upon signals and/or information received from various sensors of the heating system. For example, among various other types of information provided within a closed-loop feedback, control may be configured based upon the pressure within the combustion chamber. In accordance with another exemplary embodiment, the closed-loop control system may determine a portion of the heating system is not operating properly, based at least in part upon feedback from one or more sensors configured within the heating system.

Abstract: The combustion control system described herein is the top assembly of a combustion chamber. It was developed as part of an efficient wood burning fire place. The assembly presumes that there is some sort of baffle above the fire directing the flames to the front and a non-airtight glass door. The object is to burn cleanly, efficiently, with a minimum of creosote on the glass and with a relatively low cost non-airtight construction. A single damper blade regulates the flue opening, the combustion air supply and dilution air for the chimney. The blade also acts as a deflector to provide a long combustion path and heat extraction. A bimetal element automatically adjusts the damper as the combustion process changes.

Abstract: A balanced building ventilation system that employs a fireplace as an element of the ventilation system. The fireplace includes a firebox, and an exhaust gas flue is connected to the firebox for exhausting gas from the firebox to the outdoor ambient. A ventilation channel conveys outdoor ambient air into the building interior. A motor-driven draft inducer is connected to the exhaust gas flue for forcing exhaust gas flow out to the outdoor ambient. A motor-driven blower is provided for forcing ventilation airflow through the channel to replace building interior air lost to exhaust gas flow.

Abstract: A balanced building ventilation system that employs a fireplace as an element of the ventilation system. The fireplace includes a firebox, and an exhaust gas flue is connected to the firebox for exhausting gas from the firebox to the outdoor ambient. A ventilation channel conveys outdoor ambient air into the building interior. A motor-driven draft inducer is connected to the exhaust gas flue for forcing exhaust gas flow out to the outdoor ambient. A motor-driven blower is provided for forcing ventilation airflow through the channel to replace building interior air lost to exhaust gas flow.

Abstract: A gas fireplace is provided having a plenum formed around at least a portion of the fireplace firebox. Room air enters the plenum and is heated by the firebox prior to venting back into the room. Two openings are provided from the outside of the fireplace housing to the plenum. The first opening allows heated air to exit the plenum, while the second opening allows cool outside air to enter the plenum. a mechanism is provided to control the amount of heated air exiting the first opening and the amount of cool air entering the second opening. By controlling the inflow and outflow through the first and second openings, respectively, the amount of the fireplace by-products generated into the room where the fireplace is located such as carbon-monoxide, nitrogen dioxide, heat and moisture are reduced.

Abstract: A gas fireplace is provided having a plenum formed around at least a portion of the fireplace firebox. Room air enters the plenum and is heated by the firebox prior to venting back into the room. Two openings are provided from the outside of the fireplace housing to the plenum. The first opening allows heated air to exit the plenum, while the second opening allows cool outside air to enter the plenum. a mechanism is provided to control the amount of heated air exiting the first opening and the amount of cool air entering the second opening. By controlling the inflow and outflow through the first and second openings, respectively, the amount of the fireplace by-products generated into the room where the fireplace is located such as carbon-monoxide, nitrogen dioxide, heat and moisture are reduced.

Abstract: A gas fueled direct vent fireplace has a firebox within an outer casing, the firebox having a mounting plate above the floor of the casing for mounting burner support brackets, a pilot light assembly, a gas valve and control assembly, and other conventional elements for controlling the burner. The mounting plate includes an explosion blow-out valve plate and a vacuum release plate which are spring biased to close respective ports. The valve plate opens when the gas pressure within the firebox is excessive, and the vacuum release plate opens if the release of pressure from the firebox causes the firebox to become subatmospheric. The firebox has a frontal opening which is closed by a glass access door having an extrusion at upper and lower edges and side edge protectors. The extrusions have portions which face the interior of the firebox to be grasped by latches mounted on the firebox to tightly secure the glass access door to the firebox.

Abstract: A gas-fired, simulated log fireplace insert incorporating an automatic flue damper for controlling the operational state of a chimney vent (open/closed) in response to gas combustion, an externally mounted carbon monoxide detector for terminating or inhibiting gas combustion in response to an unsafe level of detected carbon monoxide and a temperature actuated switch, disposed within the firebox area of the fireplace proximate the flue, for terminating gas combustion in response to excessive fireplace temperatures caused by a malfunctioning damper.

Abstract: A chimney safety and control system includes a control panel which indicates the position of the chimney damper and the operational status of a chimney fan unit, and allows the operator to electro-mechanically open and close the damper and set the fan. When the safety control system senses that a predetermined condition (e.g., high temperature) exists in the chimney firebox while the damper is closed, it automatically opens the damper and activates the fan. The system may also be used in conjunction with one or more smoke detectors, in which case the system automatically opens the damper and activates the fan when a smoke detector is activated.

Abstract: A direct ventilation gas fireplace having co-linear air intake pipe and gas outlet pipe. The pipes are separated from each other so that the fluid flowing in one pipe does not come in contact with the other pipe. The gas outlet pipe may comprise a safety release valve that allows any excess pressure, in case of explosion, to exit through a lateral spring-actuated door into an enclosure closed around the combustion chamber. This safety release valve allows to build fireplaces having pipes longer than the usual length allowed for respecting specific safety tests in case of gas explosion.

Abstract: A chimney by-pass is disclosed for use with a main chimney. In case of a chimney fire, a movable damper closes off the main chimney, substantially reducing the severity of the chimney fire. The movable damper also opens an auxiliary chimney, allowing smoke to exit, uninterrupted through the auxiliary chimney, and may include a fan to assist the exit of smoke into the atmosphere. The movable damper may be actuated manually or automatically in case of a chimney fire.