US1446931A - Furnace - Google Patents

Furnace Download PDF

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Publication number
US1446931A
US1446931A US492089A US49208921A US1446931A US 1446931 A US1446931 A US 1446931A US 492089 A US492089 A US 492089A US 49208921 A US49208921 A US 49208921A US 1446931 A US1446931 A US 1446931A
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United States
Prior art keywords
air
pot
furnace
bed
fire
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Expired - Lifetime
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US492089A
Inventor
Rutherford George
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Rutherford George
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Priority to US492089A priority Critical patent/US1446931A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00Passages or apertures for delivering secondary air for completing combustion of fuel 

Description

Feb. 27, 1923.

e. RUTHERFORD.

.Z'zzv an t Q1 45. Ruth epfcard.

Patented Feb. 27, 1923.

GEORGE RUTHERFORD, 0F

titan LONDON, ONTARIO, CANADA.

FURNACE.

Application filed August 13, 1921. Serial No. 492,089.

county of Middlesex Province of Ontario,

Canada, have invented certain new and useful Improvements in Furnaces, of which the following is the specification.

My invention relates to improvements in furnaces and the object of the invention. is to devise a secondary combustion device by which air is very eiiiciently mixed with the hot gases as they rise from the fuel bed and thereby produce a thorough combustion in creasing the heating efiiciency of the furnace and it consists essentially of a fire-pot hav ing an open upper end, a superheating chamber extending over such open upper end, air discharge pipes extending through the side wall of the firepot and having their outlet ends directed upward to discharge air over the fuel bed at each side of the firepot to commingle together centrally thereof and with the rising gases and a downwardly directed central discharge pipe for directing a stream of air to commingle with the escaping gases and to force the aforesaid connningled air and gas downward against the incandescent fire-bed as hereinafter more particularly explained by the following specification.

The figure represents a sectional View of a furnace constructed in accordance with my invention.

1 indicates the fire pot of the. furnace provided with a grate 2 fuel-bed 3, and superheating chamber 4 provided with super-heating pipes 5, such super-heating chamber extending over the open upper end 6 of the fire-pot so as to relieve the hot gases rising therefrom. 7 is an air supply pipe extending in inverted U form over the topof the super-heating chamber provided with horizontally turned portions 7* and 8* supported in the furnace casing 9 at each side of the fire-pot. 10 are the hot air pipes for conducting the heated air to the desired portions of the house or building. 11 and 12 are openings in the side wall of the fire-pot 1 provided with up-turned ends 13 by which the air is discharged into the fire-pot at each side thereof commingling with the hot gases rising from thefuel-bed 8 and merging cen trally together over the fuel-bed.

14 is a depending pipe extending from the horizontal portion 7 of the inverted U shaped pipe 7. The pipe 14 extends through i an orifice 15 formed centrally in the top of the super-heating chamber l, such pipe depending vertically through the superheating chamber and having an outlet 16 at its lower end located centrally within'the opening 6 between thefire-pot and the superheating chamber 4. The outlet 16 may be provided with a suitably flared portion 17, the head of which may be in the form. of a perforated. rose 18 to distribute the air in finely divided portions so as to more thoroughly commingle with the hot gases,

'The air from the pipe 16 commingles with the hot gases escaping through the outlet 6 and which have failed to cominingle with the air fed in from the outlet 13. The air from the pipe 16 being directed downwardlyand centrally of the fire-pot forces the air fed in from the pipe 13 and commingled with the hot gases downward against the incandescent iire-bed thereby producing a thorough combustion of the gases.

From this description it will be seen that I have devised a very simple device which i horizontalbranches extending from each de pending arm of the U through the wall of the lire-pot in proximity to the fuel-bed and to each side thereof. and a depending pipe extending from the horizontal portion of the U to discharge air into the open upper end of the furnace to force the aforesaid air downward into contact with the fuel-bed.

. GEORGE RUTHERFORD.

itnessesz FINLEY EVANS PERRIN, MARY CAMPBELL.

US492089A 1921-08-13 1921-08-13 Furnace Expired - Lifetime US1446931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US492089A US1446931A (en) 1921-08-13 1921-08-13 Furnace

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299178A (en) * 1980-03-10 1981-11-10 Wilson John W Furnace and heat storage assembly
US4335660A (en) * 1980-06-02 1982-06-22 Research Cottrell Technologies, Inc. Apparatus and method for flue gas recirculation in a solid fuel boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299178A (en) * 1980-03-10 1981-11-10 Wilson John W Furnace and heat storage assembly
US4335660A (en) * 1980-06-02 1982-06-22 Research Cottrell Technologies, Inc. Apparatus and method for flue gas recirculation in a solid fuel boiler

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