Woodstove for heated air forced into a secondary combustion chamber and method of operating same

US5007404A · kind A · utility

Assignee

• The United States of America as Represented by the Administrator of the U.S. Environmental Protection Agency · US

Inventors

• Robert E. Hall · Port Jefferson, US
• Graig A. Spolek · Portland, US
• John H. Wasser · Raleigh, US
• Nelson L. Butts · Hillsborough, US

Key dates

• Filing date: Jun 26, 1990
• Grant date: Apr 16, 1991
• Expiry date: Jun 26, 2010

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23N2237/16
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A resistance heater heats air forced by a fan into a woodstove secondary combustion chamber having an ignitor. The fan, heater and ignitor are controlled by a temperature sensor for gas flowing from a primary combustion chamber to a secondary combustion chamber. Two ignitors, extending through the stove back wall into the secondary combustion chamber, are controlled by the temperature sensor.