摘要:
An exhaust fan assembly is provided for expelling contaminated air from a building. The assembly includes a plenum, a fan assembly attached to the plenum, and a windband mounted on top of the fan assembly. The fan assembly is constructed of cylindrical outer and inner walls which define a bearing chamber and surrounding annular space. A fan driven by a shaft extending downward from the bearing chamber draws exhaust air from the plenum and blows it up through the annular space to a nozzle at the top of the fan assembly.
摘要:
An exhaust stack is disclosed for protecting exhaust system components from liquid entering an exhaust stack discharge port. The exhaust stack includes a first section defining a first flow passage extending along a first longitudinal axis and a second section having an open end and defining a second flow passage extending along a second longitudinal axis. The exhaust stack further includes a liquid drain disposed in the first section and one or more baffles disposed in the second flow passage, wherein the one or more baffles are configured to block line-of-sight between the open second end and any inner surface below the liquid drain
摘要:
The present invention relates to a dripless chimney cap which prevents condensates from dripping down the outside of a chimney. The dripless chimney cap includes a cone-shaped top cap at the top of the chimney cap for stopping liquids and objects from falling into the chimney. A condensation drip pan in the shape of an inverted cone is positioned below the top cap and functions to catch and collect condensates, directing them toward the inside of the chimney flue. A mounting flange attaches to the chimney and secures the condensation drip pan and top cap to the chimney. A screen mesh located between the condensation drip pan and the mounting flange is designed to allow cross air flow.
摘要:
Modular discharge structure for closed gas appliances having an inner end and an outer end, comprising: an outer tubular casing; an inner gas exhaust pipe, being placed inside the casing to define an annular supply line for combustion air therewith; a combustion air supply hood, forming a connection between the outside air and the annular supply line, and a combustion gas exhaust hood, forming a connection between the outside air and the gas exhaust pipe, and further comprising retaining means for axially keeping together, in series and in a mechanical and releasable manner, the casing, the combustion gas exhaust hood and the combustion air supply hood on the gas exhaust pipe.
摘要:
The present invention relates to a low-wind-resistance rainproof silencer for chimney, which includes: a main body, formed with a hollow chamber, two lateral walls of the main body are respectively filled with a sound absorbing material, and inner sides of the two lateral walls are respectively formed with a first sound absorbing surface; a water collecting disc, formed in a conical status and disposed in the hollow chamber, formed with a rain blocking plate having a third opening with the bottom being connected to a water discharging pipe; and a base tube; accordingly, rainwater is able to be collected by the rain blocking plate and discharged out of the main body through the water discharging pipe; airflow discharged by the chimney is able to be silenced by the first sound absorbing surfaces thereby achieving a sound silencing effect.
摘要:
An exhaust fan assembly is provided for expelling contaminated air from a building. The assembly includes a plenum, a fan assembly attached to the plenum, and a windband mounted on top of the fan assembly. The fan assembly is constructed of cylindrical outer and inner walls which define a bearing chamber and surrounding annular space. A fan driven by a shaft extending downward from the bearing chamber draws exhaust air from the plenum and blows it up through the annular space to a nozzle at the top of the fan assembly.
摘要:
A vent assembly for use with a vent pipe assembly that includes an intake member defining an intake aperture and an exhaust member defining an exhaust aperture. The vent assembly may include a flow guide positioned adjacent to the intake aperture and configured to direct fluid flow into the intake aperture, a divider positioned between the exhaust aperture and the intake aperture and configured to minimize fluid flow between the exhaust aperture and the intake aperture, and a wind shield coupled to a distal end of the exhaust member adjacent to the exhaust aperture and configured to minimize reverse flow into the exhaust aperture. The vent assembly is configured to minimize the flow of fluids exhausted from the exhaust aperture into the intake aperture, to minimize reverse flow in the exhaust member, and to improve the flow of intake air into the intake aperture.
摘要:
A chimney stack exhaust treatment unit and an improved exhaust gas treatment system utilizing such a unit are disclosed. The unit comprises a generally spherical outer housing which fits over the mouth of a caustic-resistant chimney pipe and encloses a horizontally mounted squirrel cage fan which is driven by an electric motor situated above it. The fan is situated directly above the chimney mouth so that when it is rotated, exhaust gases are drawn up through the chimney and swirled around the inner walls of the outer housing. Exhaust ports near the top of the housing provide an exit for treated gas. An inner housing encloses a fan motor, isolating it from the interior of the outer sphere. A conduit connects an opening in the outer sphere with an opening in the inner housing, and the inner housing includes a mouth directly above the fan, whereby rotation of the fan also draws outside air through the inner housing to cool the motor.
摘要:
An exhaust fan assembly is provided for expelling contaminated air from a building. The assembly includes a plenum, a fan assembly attached to the plenum, and a windband mounted on top of the fan assembly. The fan assembly is constructed of cylindrical outer and inner walls which define a bearing chamber and surrounding annular space. A fan driven by a shaft extending downward from the bearing chamber draws exhaust air from the plenum and blows it up through the annular space to a nozzle at the top of the fan assembly.
摘要:
A device to prevent indoor release of carbon monoxide and smoke from indoor combustors (stoves, furnaces, fireplaces, etc.). The device is based on a discovery that safe operation of indoor burners requires the air pressure in the room housing the burner to be relatively high in order to prevent generation of reverse chimney flow and indoor release of exhaust gas (smoke and carbon monoxide), which are dangerous to building occupants. This device solves the problem by increasing the building internal pressure.