Draft air control system

Patent · Tue Aug 15 04:00:00 EDT 1978

OSTI ID:6346594

Mayes, C C

A draft air control system for fireplaces is described that is comprised of a duct having an outside end in fluid communication with outside air and inside end terminating at a location below the fireplace grate, damper means adjustably controlling the cross-sectional area of the duct, hood means covering the inside terminal end. The hood means comprises a throat section passageway in fluid communication with the duct, a second passageway directing airflow in a generally lateral direction and including a downwardly opening outlet to permit essentially unrestricted airflow from the duct into the fireplace beneath the grate and essentially preventing passage of particulate matter into the duct.

• Assignee: TIC; ERA-04-026928; EDB-79-042531
• Patent Number(s): US 4106475
• OSTI ID: 6346594
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
DESIGN
DRAFT CONTROL SYSTEMS
FIREPLACES
HEAT SOURCES