Self-powered automatic secondary air controllers for woodstoves and small furnaces

Patent · Tue May 14 00:00:00 EDT 1991

OSTI ID:5762510

Siemer, D D

This patent describes a controller for automatically regulating the supply of secondary combustion air to wood stoves and small furnaces. The controller includes a movable air valve for controlling the amount of secondary air admitted into the chamber. A self powered means monitors the concentration of combustible gases and vapors and actuates the movable air valve to increase the supply of secondary air in response to increasing concentrations of the combustible gases and vapors. The self-powered means can be two fluid filled sensor bulbs, one of which has a coating of a combustion catalyst. Alternatively, the self powered means can be two metallic stripes laminated together, one of which is coated with a combustion catalyst, and when heated causes the air valve to actuate.

• Assignee: US DOE, Washington, DC (USA)
• Patent Number(s): US 5014680; A
• Application Number: PPN: US 7-323924
• OSTI ID: 5762510
• Resource Relation: Patent File Date: 15 Mar 1989
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
09 BIOMASS FUELS
54 ENVIRONMENTAL SCIENCES
COMBUSTION CHAMBERS
AIR FLOW
FLOW REGULATORS
FURNACES
AUTOMATION
WOOD BURNING APPLIANCES
ACTUATORS
AIR POLLUTION CONTROL
CATALYTIC COMBUSTORS
COMBUSTION
DESIGN
VAPORS
WOOD FUELS
APPLIANCES
CHEMICAL REACTIONS
COMBUSTORS
CONTROL
CONTROL EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLUID FLOW
FLUIDS
FUELS
GAS FLOW
GASES
OXIDATION
POLLUTION CONTROL
THERMOCHEMICAL PROCESSES
421000* - Engineering- Combustion Systems
092000 - Biomass Fuels- Combustion- (1990-)
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)