System for controlling air/fuel ratio in a gas flow...

Details System for controlling air/fuel ratio in a gas flow... System for controlling air/fuel ratio in a gas flow...

2011-01-18

2011-01-18

Basichas, Alfred (Department: 3743)

Combustion

Process of combustion or burner operation

Heating feed

C431S089000, C431S090000, C431S012000

Reexamination Certificate

active

07871263

ABSTRACT:
A system for controlling air/fuel ratio in an air/fuel mixture supplied to a premix burner for gaseous fuels includes a blower (310) for inducting and pressurising combustion air, a Venturi-pipe (330) for governing a rate of gas to be mixed into the combustion air, and a pressure regulator (230) interconnecting a source of gaseous fuel to a supply point in the Venturi pipe (330). A preheated reaction chamber (500) and a lambda sond (620) are connected to a controller (350) controlling an amount of air bypassing said Venturi-pipe (330).

REFERENCES:
patent: 3590791 (1971-07-01), Roosa
patent: 4153021 (1979-05-01), Hattori et al.
patent: 4217869 (1980-08-01), Masaki
patent: 4616621 (1986-10-01), Kuroiwa et al.
patent: 4659306 (1987-04-01), Altemark et al.
patent: 6055844 (2000-05-01), Kondo et al.
patent: 1 568 426 (1980-05-01), None

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