F - Mech Eng,Light,Heat,Weapons – 23 – N
Patent
F - Mech Eng,Light,Heat,Weapons
23
N
110/69
F23N 5/02 (2006.01) F23N 3/04 (2006.01)
Patent
CA 1085681
ABSTRACT OF THE DISCLOSURE Device for controlling draft in an oil burner furnace by governing an exhaust valve. The device is provided with automatic, thermally responsive control disposed to increase or decrease the cross-sectional area of the passage at the valve as the temperature at the smoke flue decreases or increases, respectively. Two sensors cooperate to govern the opening or closing of the valve; one of the sensors operatively transmits the instant temp- erature of the smoke flue, the other the instant temperature of the chimmney wall. Increased fuel efficiency is obtained during the heating-up and normal operating phase of the furnace.
293834
Gowling Lafleur Henderson Llp
Werne Stig
LandOfFree
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