Furnace control system

Details Furnace control system Furnace control system

1977-10-27

1979-02-20

Yuen, Henry C.

Furnaces

Including fluid fuel burner

Powdered solid fuel

110186, 110187, 236 1E, 431 6, F23C 106, F23D 1700

Patent

active

041400674

ABSTRACT:
A furnace control system to control burner operation of a multifuel furnace to reduce primary fuel consumption of either oil or gas of the multifuel furnace. The system controls a primary fuel to initially kindle a secondary fuel when the fire reaches a self-sustaining burning rate, the primary fuel is shut off but the burner fan continues to run to force a draft and insure complete combustion of the secondary fuel and the volatile gases. The furnace control system is utilized as original equipment manufacturer incorporated into the controls for a burner of a multifuel furnace or as a retrofit furnace control system to control the burner operation of the multifuel furnace.

REFERENCES:
patent: 1858450 (1932-05-01), Coutant
patent: 2176009 (1939-10-01), Lange
patent: 2848958 (1958-08-01), Kolman
patent: 3223074 (1965-12-01), Tanner et al.
patent: 3702594 (1972-11-01), Howes
patent: 4024378 (1977-05-01), McIntosh
patent: 4047515 (1977-09-01), Daniel
patent: 4078541 (1978-03-01), Roycraft

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