Fire-rated modular duct assembly and improvements therein
OwnerWilliam Christopher Duffyinventor
Life of this patent
Estimating the term…
Abstract
A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.
Claims20
A modular fire-rated exhaust duct assembly comprising:
- two or more exhaust duct modules;
- each of said exhaust duct modules having an inner duct liner and an outer casing, and a void being formed between at least a portion of space between said inner duct liner and said outer casing, said void being configured for receiving an insulation material, and including one or more thermal spacers configured to maintain said inner duct liner and said outer casing in a spaced relationship so that said insulation material occupies said void;
- a first exterior flange connector, and one end of each of said exhaust duct modules being configured for receiving said first exterior flange connector;
- a second exterior flange connector, and another end of each of said exhaust duct modules being configured for receiving said second exterior flange connector;
- said first and said second exterior flange connectors being configured to form a field assembly junction for coupling respective ends of said exhaust duct modules to form a single exhaust duct run;
- and
- a joint encasement section configured to be field connectable to each of said exhaust duct modules and encase said junction.
An exhaust duct module configured to be assembled in the field to form a fire-rated exhaust duct assembly, said exhaust duct module comprising:
- an inner duct liner formed with a generally rectangular cross-section;
- an outer casing formed with a generally rectangular cross-section and being sized to substantially surround said inner duct liner and a void being formed between at least a portion of space between said inner duct liner and said outer casing, said void being configured for receiving an insulation material, and further including one or more thermal spacers configured to maintain said inner duct liner and said outer casing in a spaced relationship so that said material occupies said void;
- a first exterior flange connector, and one end of said exhaust duct module being configured for receiving said first exterior flange connector;
- a second exterior flange connector, and another end of said exhaust duct module being configured for receiving said second exterior flange connector;
- and
- said first exterior flange connector and said second exterior flange connector being configured to be field attachable to couple another exhaust duct assembly.
An exhaust duct module configured to be assembled in the field to form a fire-rated exhaust duct assembly, said exhaust duct module comprising:
- an inner duct liner formed with a generally rectangular cross-section;
- an outer casing formed with a generally rectangular cross-section and being sized to substantially surround said inner duct liner and a void being formed between at least a portion of space between said inner duct liner and said outer casing, said void being configured for receiving a compressible insulation material, and further including one or more thermal spacers configured to maintain said inner duct liner and said outer casing in a spaced relationship so that said compressible insulation material occupies said void;
- a first exterior flange connector, and one end of said exhaust duct module being configured for receiving said first exterior flange connector;
- a second exterior flange connector, and another end of said exhaust duct module being configured for receiving said second exterior flange connector;
- and
- said first exterior flange connector and said second exterior flange connector being configured to be field attachable to couple another exhaust duct assembly.
Dependencies are inferred from the claim text.