EP 0062855 B1 19860305 - CONTROL DEVICE FOR A GAS-FIRED WATER OR AIR HEATER
Title (en)
CONTROL DEVICE FOR A GAS-FIRED WATER OR AIR HEATER
Publication
Application
Priority
DE 3114954 A 19810413
Abstract (en)
[origin: US4436506A] In a control system for a gas heated water or air heater, the use of the supplied fuel gas is to be improved by automatically determining and supplying the amount of air which is required for obtaining complete combustion. A gas control valve feeds a burner with the required amount of gas dependent on the demand of heat. A sensor responding to the content of oxygen or carbon dioxide within the flue gases is located in the stack and the output signal of this sensor is compared with a set point within an electric controller. In case of a control deviation, the output signal of the controller controls an adjustable source of air under pressure formed by a fan with subsequent air control valve in such a manner that the required amount of air for reaching optimum combustion is supplied.
IPC 1-7
IPC 8 full level
F23N 5/00 (2006.01)
CPC (source: EP US)
F23N 5/006 (2013.01 - EP US); F23N 2225/08 (2020.01 - EP US); F23N 2225/16 (2020.01 - EP US); F23N 2233/06 (2020.01 - EP US); F23N 2233/08 (2020.01 - EP US); F23N 2235/14 (2020.01 - EP US); F23N 2235/16 (2020.01 - EP US); F23N 2235/18 (2020.01 - EP US); F23N 2235/20 (2020.01 - EP US); F23N 2235/24 (2020.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0062855 A1 19821020; EP 0062855 B1 19860305; CA 1209898 A 19860819; DE 3114954 A1 19821104; DE 3269552 D1 19860410; DK 161682 A 19821014; JP S57183447 U 19821120; US 4436506 A 19840313
DOCDB simple family (application)
EP 82102803 A 19820402; CA 401001 A 19820414; DE 3114954 A 19810413; DE 3269552 T 19820402; DK 161682 A 19820407; JP 5177182 U 19820409; US 36848682 A 19820414