US2188133A - Heating apparatus - Google Patents

Heating apparatus Download PDF

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Publication number
US2188133A
US2188133A US174087A US17408737A US2188133A US 2188133 A US2188133 A US 2188133A US 174087 A US174087 A US 174087A US 17408737 A US17408737 A US 17408737A US 2188133 A US2188133 A US 2188133A
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tube
fuel
fan
air
combustion
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Expired - Lifetime
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US174087A
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William M Hepburn
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Surface Combustion Corp
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Surface Combustion Corp
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Application filed by Surface Combustion Corp filed Critical Surface Combustion Corp
Priority to US174086A priority Critical patent/US2226816A/en
Priority to US174087A priority patent/US2188133A/en
Priority to DESCH2935D priority patent/DE868647C/en
Priority to DESCH2940D priority patent/DE872244C/en
Application granted granted Critical
Publication of US2188133A publication Critical patent/US2188133A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube

Definitions

  • This invention relates to heating apparatus comprising a fuel-fired radiator tube for producing radiant heat in a furnace chamber and an exhaust fan for the double purpose of withdrawing gases of combustion from the tube and for drawing combustion-supporting air into the intake end of the tube: and the object of the invention is to increase the utility of such apparatus by the improvements hereinafter described.
  • Fig. 1 is a side elevation of the improved heating apparatus with parts in section;
  • Fig. 2 is a sectional view on line 2-2 of Fig. 1;
  • Fig. 3 is a sectional view on line 3--3 of Fig. l.
  • Fig. 4 is a sectional view of the burner associated with the radiator tube.
  • ll indicates a wall of a furnace chamber wherein is postioned a fuelfired radiator tube l2 which, for convenience of illustration, is shown as of the hairpin type with its free ends projecting out of said chamber which leads from a chamber l4 to which fuel gas is supplied by a gas pipe I, it being noted that the tube ll extends a substantial distance into the radiator tube i2 beyond the mouth l2 of the latter.
  • fuel flowing from the fuel tube II enters the radiator tube l2 at its mouth l2, the air being drawn into said mouth by a suction fan ll coupled to the exhaust end of the radiator tube l2 by means including an exhaust pipe II.
  • a stream of premixed air and gas is caused to burn around the discharge end of said tube, said mixture being delivered to said end by means including a pipe I! to which the mixture is delivered by a supply pipe-20, it being noted that the pipe I! surrounds the fuel tube in spaced relation and terminates short of the discharge end of the latter.
  • provided with restricted discharge passages.
  • sleeve 24 Positioned in the radiator tube l2 in front of the fuel tube I3 is a. sleeve 24 which is held spaced from the'walls of the radiator tube by spacer fingers 25, thus providing a flow space 24 between The air for supporting combustion of the the sleeve 24 and the radiator tube.
  • the purpose of the sleeve 24 will be presently explained.
  • the exhaust pipe I8 is internally and externally provided with heat conducting fins 2'! and 28 respectively, and is surrounded by a casing 29 into whose upper end fuel gas is discharged by a supply i5 and from whose lower end the fuel gas flows into the pipe I5 leading to the burner A, it being understood that by heat exchange between the fuel gas and the exhaust gases, the latter become cooled and the fuel gas becomes heated.
  • T absolute temperature of the gas
  • K a constant.
  • the conduit or sleeve 24 serves to provide a constricted combustion 'zone in which the fuel discharged therein will only partially-burn due to the insufficiency of air drawn into the sleeve, the major portion of the air for combustion being drawn around the sleeve in the passage 26.
  • the unburned fuel leaves the sleeve 24, it slowly diffuses with the air fiowing through the annular passage 26, thereby lengthening the zone of combustion. This results in an elongated and more uniform flame which provides improved temperature distribution throughout the radiator tube.
  • the present invention substantially increases the heating efi'iciency of heating apparatus comprising a fuel fired radiator tube, also permits use of lean producer gases and blast furnace gas for higher temperature application than could normally be attained.
  • a fan at the discharge end of said tube for producing a suction, therethrough, and means for maintaining a substantially constant air to fuel weight ratio at the intake end of said tube comprising means for cooling the exhaust gases entering said fan whereby the static suction of said fan will remain substantially constant and simultaneously proportionally heating the fuel being supplied to said burner.
  • a fuel-fired radiator tube a burner firing into the intake end of said tube; a fan at the discharge end of said tube for withdrawing gases of combustion therefrom and for inducing a flow of air into the intake end thereof, and means for cooling the exhaust gases before they enter said fan comprising means for heating the fuel before the same is discharged into the tube.
  • a furnace chamber an internally fired tube within said chamber for producing radiant heat therein, a suction fan for withdrawing gases of combustion from said tube, means outside of said chamber for absorbing heat from said gases before they reach said fan, means for transferring the absorbed heat to a gaseous medium, and means for transferring said medium to the intake end of said tube.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gas Burners (AREA)

Description

Jan. 23, 1940.
W. M. HEPBURN HEATING APPARATUS Filed Nov. 11, 1957 ZSmaentor (Ittorneg Patented Jan...23, 1940 HEATING APPARATUS William M. Hepburn, Ottawa Hills, Ohio, assignor to Surface Combustion Corporation, Toledo, Ohio, a corporation New York Application November 11, 1937, Serial No. 174,087
4 Claims.
This invention relates to heating apparatus comprising a fuel-fired radiator tube for producing radiant heat in a furnace chamber and an exhaust fan for the double purpose of withdrawing gases of combustion from the tube and for drawing combustion-supporting air into the intake end of the tube: and the object of the invention is to increase the utility of such apparatus by the improvements hereinafter described.
In the drawing wherein the preferred form of the invention is shown:
Fig. 1 is a side elevation of the improved heating apparatus with parts in section;
Fig. 2 is a sectional view on line 2-2 of Fig. 1;
Fig. 3 is a sectional view on line 3--3 of Fig. l, and
Fig. 4 is a sectional view of the burner associated with the radiator tube.
Referring to Fig. 1, ll indicates a wall of a furnace chamber wherein is postioned a fuelfired radiator tube l2 which, for convenience of illustration, is shown as of the hairpin type with its free ends projecting out of said chamber which leads from a chamber l4 to which fuel gas is supplied by a gas pipe I, it being noted that the tube ll extends a substantial distance into the radiator tube i2 beyond the mouth l2 of the latter. fuel flowing from the fuel tube II enters the radiator tube l2 at its mouth l2, the air being drawn into said mouth by a suction fan ll coupled to the exhaust end of the radiator tube l2 by means including an exhaust pipe II. In order to insure ignition of the fuel gas discharg from the fuel tube It, a stream of premixed air and gas is caused to burn around the discharge end of said tube, said mixture being delivered to said end by means including a pipe I! to which the mixture is delivered by a supply pipe-20, it being noted that the pipe I! surrounds the fuel tube in spaced relation and terminates short of the discharge end of the latter. To prevent said mixture from backflring there is provided between the two tubes a ring 2| provided with restricted discharge passages. The burner A thus briefly described forms, per so, no part of the present invention.
Positioned in the radiator tube l2 in front of the fuel tube I3 is a. sleeve 24 which is held spaced from the'walls of the radiator tube by spacer fingers 25, thus providing a flow space 24 between The air for supporting combustion of the the sleeve 24 and the radiator tube. The purpose of the sleeve 24 will be presently explained.
The exhaust pipe I8 is internally and externally provided with heat conducting fins 2'! and 28 respectively, and is surrounded by a casing 29 into whose upper end fuel gas is discharged by a supply i5 and from whose lower end the fuel gas flows into the pipe I5 leading to the burner A, it being understood that by heat exchange between the fuel gas and the exhaust gases, the latter become cooled and the fuel gas becomes heated.
Let us now briefly consider some of the advantages resulting from effecting heat exchange between the outgoing exhaust gas and the incoming fuel gas.
It is a characteristic of fan performance that the static suction is directly proportional to the density and therefore inversely proportional to the absolute temperature of the gases entering the fan. This is expressed by the equations S=KD and where S=static suction; D=density of the. gas;
T=absolute temperature of the gas, and K=a constant. Thus with every temperature change of gases entering the fan, the static suction of the fan will always change. Likewise when the static suction of the fan changes the quantity of the gases by weight handled by the fan will also change.
Now let us consider what takes place when a fan is utilized for the dual purpose of expelling combustion gases from an internally fired radiator tube and for drawing combustion supporting air into the tube. In the first place let us assume that fuel gas is being supplied to .the intake end of the tube at a constant rate by weight and that the static suction of the fan when the combustion gases at the fan are, at'some predetermined temperature, say 1000 F., is just enough to cause the required amount of combustion supporting air to enter the radiator. As the temperature of the exhaust gases increases the rate of air by weight drawn into the tube by the fan decreases with the result that the amount of oxygen delivered to the fuel for supporting its combustion is decreased. This is the same thing as saying that the air to gas ratio decreases as the static suction of the fan decreases or as the temperature of the exhaust gases pulled out of the tube by the fan increases.
In the operation of a furnace wherein the temperature variation is small after the normal operating temperature has 'been reached and therefore where the exhaust gas temperatures are substantially constant, the variation in air to fuel weight ratio is exceedingly slight and the problem of controhing this ratio is not necessarily of great importance. However, the temperature of the exhaust gases varies considerably during the warming-up period, but as this period is relatively short, the inefficiency due to the changing air to fuel weight ratio is negligible.
However, in furnaces wherein the operating temperature variation is appreciable, such as furnaces which are used for two or more heating operations requiring more than one operating temperature, the maintenance of proper air to fuel weight ratio without readjusting the burner equipment for each temperature change is of considerable importance.
By the present invention the air to fuel weighttion of the exhaust fan. Moreover since the de-,
gree to which the fuel gas is heated and therefore expanded is directly proportional to the temperature of the exhaust gases, it will be appreciated that the degree of expansion of the fuel gas is automatically controlled.
The conduit or sleeve 24 serves to provide a constricted combustion 'zone in which the fuel discharged therein will only partially-burn due to the insufficiency of air drawn into the sleeve, the major portion of the air for combustion being drawn around the sleeve in the passage 26. As the unburned fuel leaves the sleeve 24, it slowly diffuses with the air fiowing through the annular passage 26, thereby lengthening the zone of combustion. This results in an elongated and more uniform flame which provides improved temperature distribution throughout the radiator tube.
From the foregoing it will be seen that the present invention substantially increases the heating efi'iciency of heating apparatus comprising a fuel fired radiator tube, also permits use of lean producer gases and blast furnace gas for higher temperature application than could normally be attained.
What I claim is:
1. In combination, a fuel-fired radiator tube, a burner firing into the intake end of said tube,
a fan at the discharge end of said tube for producing a suction, therethrough, and means for maintaining a substantially constant air to fuel weight ratio at the intake end of said tube comprising means for cooling the exhaust gases entering said fan whereby the static suction of said fan will remain substantially constant and simultaneously proportionally heating the fuel being supplied to said burner.
2. In combination, a fuel-fired radiator tube, a burner firing into the intake end of said tube; a fan at the discharge end of said tube for withdrawing gases of combustion therefrom and for inducing a flow of air into the intake end thereof, and means for cooling the exhaust gases before they enter said fan comprising means for heating the fuel before the same is discharged into the tube.
3. In combination, a fuel-fired radiator tube, a
"burner firing into the intake end of said tube, a
fan at the discharge end of said tube for producing a suction therethrough, and means for maintaining a substantially constant air to fuel weight ratio at the intake end of said tube comprising means for heating the fuel proportional to the temperature of the gases of combustion discharged from said tube.
4. In combination, a furnace chamber, an internally fired tube within said chamber for producing radiant heat therein, a suction fan for withdrawing gases of combustion from said tube, means outside of said chamber for absorbing heat from said gases before they reach said fan, means for transferring the absorbed heat to a gaseous medium, and means for transferring said medium to the intake end of said tube. 1
WILLIAM M. HEPBURN.
US174087A 1937-11-11 1937-11-11 Heating apparatus Expired - Lifetime US2188133A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US174086A US2226816A (en) 1937-11-11 1937-11-11 Heating apparatus
US174087A US2188133A (en) 1937-11-11 1937-11-11 Heating apparatus
DESCH2935D DE868647C (en) 1937-11-11 1938-11-10 Device for evenly heating long heating pipes by burning a gas-air mixture in the heating pipes
DESCH2940D DE872244C (en) 1937-11-11 1938-11-11 Device for evenly heating long heating pipes by burning a gas-air mixture in the heating pipes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US174086A US2226816A (en) 1937-11-11 1937-11-11 Heating apparatus
US174087A US2188133A (en) 1937-11-11 1937-11-11 Heating apparatus

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432314A (en) * 1941-08-30 1947-12-09 Motorola Inc Gasoline burning hot-air heater
US2465711A (en) * 1944-04-03 1949-03-29 Clarkson Alick High velocity gaseous fuel burner for air heaters
US2551823A (en) * 1945-02-10 1951-05-08 William C Buttner Heating system
US2585892A (en) * 1949-06-30 1952-02-12 Jones & Laughlin Steel Corp Annealing furnace
US2638889A (en) * 1947-05-08 1953-05-19 Doris B Dow Heat-treating element for heattreating furnaces
US2700380A (en) * 1950-12-29 1955-01-25 Surface Combustion Corp Radiant tube heater and combustion air preheater therefor
US2733287A (en) * 1956-01-31 Cracking of hydrocarbon gases and heater therefor
US2785053A (en) * 1953-11-13 1957-03-12 Phillips Petroleum Co Process and apparatus for production of carbon black
US2852346A (en) * 1954-08-23 1958-09-16 Phillips Petroleum Co Process and apparatus for the production of carbon black
US3046977A (en) * 1957-05-21 1962-07-31 Carroll C Figge Heating kettle
US3111941A (en) * 1961-10-09 1963-11-26 Preway Inc Gas dishwasher venting and heating arrangement
US3201098A (en) * 1963-06-17 1965-08-17 Air Heaters Inc Portable heater
US3201861A (en) * 1960-03-31 1965-08-24 Fromson H A Method of making a double-walled tube
US3212554A (en) * 1961-04-18 1965-10-19 Selas Corp Of America Method of furnace operation
US3304987A (en) * 1963-01-17 1967-02-21 S C A T Soc Pour La Constructi Apparatus for heating with natural gas
US3705617A (en) * 1970-11-05 1972-12-12 Badger Co Sublimation apparatus and method
US3828762A (en) * 1972-09-21 1974-08-13 Borg Warner Tubular heat exchanger
US3907510A (en) * 1972-12-26 1975-09-23 Chemsoil Corp System for burning sulfur and absorbing sulfur dioxide in water
US3920383A (en) * 1974-06-20 1975-11-18 Electric Furnace Co Fluted surface heat exchanger
US4047881A (en) * 1976-05-11 1977-09-13 Republic Steel Corporation Heat recuperator and shroud for radiant tube burner
US4310303A (en) * 1980-07-11 1982-01-12 W. B. Combustion, Inc. Plug-in recuperator and method
US4344479A (en) * 1978-07-28 1982-08-17 Fuelsaver Company Process and apparatus utilizing common structure for combustion, gas fixation, or waste heat recovery
US4559312A (en) * 1983-09-19 1985-12-17 Kennecott Corporation Sintering or reaction sintering process for ceramic or refractory materials using plasma arc gases
US4657074A (en) * 1985-02-27 1987-04-14 Diesel Kiki Co., Ltd. Heat exchanger for combustion heater
US4725223A (en) * 1986-09-22 1988-02-16 Maxon Corporation Incinerator burner assembly
US4800866A (en) * 1987-03-13 1989-01-31 Bloom Engineering Company, Inc. Low NOX radiant tube burner and method
US4828483B1 (en) * 1988-05-25 1994-03-22 Bloom Eng Co Inc Method and apparatus for suppressing nox formation in regenerative burners
US6019598A (en) * 1998-07-06 2000-02-01 Dana Corporation Air recuperator for combustion air burners
US7959431B2 (en) 2008-04-21 2011-06-14 Fives North American Combustion, Inc. Radiant tube with recirculation
US20170314784A1 (en) * 2016-04-27 2017-11-02 Superior Radiant Products Ltd. Optimization of gas fired radiant tube heaters
US9909755B2 (en) 2013-03-15 2018-03-06 Fives North American Combustion, Inc. Low NOx combustion method and apparatus

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480657A (en) * 1944-02-17 1949-08-30 Lawson Mfg Company Water heater
US2543835A (en) * 1945-12-10 1951-03-06 Maurice J Dewey Gas-fired immersion heating apparatus
US2637377A (en) * 1946-02-01 1953-05-05 Motorola Inc Liquid fuel burning heater and operating system therefor
DE1064671B (en) * 1957-02-25 1959-09-03 Hauck Mfg Company Gas burner for insertion in a heating pipe
US2992676A (en) * 1957-07-10 1961-07-18 Selas Corp Of America Industrial gas burner
DE1146639B (en) * 1959-01-19 1963-04-04 Jacob Tobler Gas or oil-fired hot water boiler
US3056400A (en) * 1960-02-08 1962-10-02 Handling Equipment Mfg Corp Air inlet and smoke outlet baffle structure for gas fired heater
US3079910A (en) * 1960-06-27 1963-03-05 Bloom Eng Co Inc Recuperative radiant tube burner mechanism
DE1229226B (en) * 1960-07-19 1966-11-24 Indugas Ges Fuer Ind Gasverwen Industrial burners with recuperative fuel preheating
US3111953A (en) * 1961-03-03 1963-11-26 Preway Inc Gas-fired dishwasher
DE1181359B (en) * 1961-03-30 1964-11-12 Indugas Ges Fuer Ind Gasverwen Jet pipe
US3194229A (en) * 1962-06-29 1965-07-13 Donald R Borgeson Portable submersible swimming pool heater
DE1246151B (en) * 1962-09-17 1967-08-03 Bloom Eng Co Inc Radiant heating tube with a heat exchanger arranged in a tube leg
US3174474A (en) * 1963-10-04 1965-03-23 Hazen Engineering Company Radiant heating units
DE1232304B (en) * 1963-12-23 1967-01-12 Nassheuer Jean Radiant heating tube for industrial furnaces
US3521986A (en) * 1968-08-23 1970-07-28 Midland Ross Corp Aspirated radiant tube combustion apparatus
US3661141A (en) * 1970-07-10 1972-05-09 Willard L Salemink Heating system for storage tank
DE2629962C2 (en) * 1976-07-02 1978-04-27 Ludwig-Ofag-Indugas Industrieofenanlagen Gmbh, 4300 Essen Device for soundproofing a radiant heating tube for an industrial furnace
IT1067985B (en) * 1976-08-24 1985-03-21 Birfield Trasmissioni HEATING DEVICE FOR THE CHAMBER OF AN INDUSTRIAL OVEN
GB1597234A (en) * 1977-01-21 1981-09-03 Ward T Selfrecuperative burner
GB1555752A (en) * 1977-02-04 1979-11-14 Dunlop Ltd Indirect heat transfer apparatus
DE8414235U1 (en) * 1984-05-10 1984-08-02 Colt International Gmbh, 4190 Kleve HEATER
US5429112A (en) * 1993-04-26 1995-07-04 Rozzi; Mario Infra-red radiant tube heater
DE9319719U1 (en) * 1993-12-22 1994-03-03 Jendrisak, Jozef, Dipl.-Ing., 68167 Mannheim Burner for dark jet heating, which is equipped as a compact unit with air and recirculation fan, mixing device, recirculation chamber, air chamber and combustion air preheating
DE19530732A1 (en) * 1995-08-22 1997-02-27 Gutehoffnungshuette Man Plant for the smoldering and subsequent burning of waste and toxic residues
EP2069692B1 (en) * 2006-09-18 2019-01-09 Spinworks International Corporation Radiant heat transfer system
US20090145419A1 (en) * 2007-12-05 2009-06-11 Bekaert Combustion Technology B.V. Furnace heat exchanger
GB2529407B (en) 2014-08-18 2020-01-08 Joan Philomena Jones Heater

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2059523A (en) * 1936-11-03 Heating apparatus
DE487588C (en) * 1929-12-10 Wilhelm Rinau Bunsen tube burner with burner tube mounted in a longitudinal gap in an air supply duct, in particular for heating ovens
DE655117C (en) * 1932-05-10 1938-01-10 C M Kemp Mfg Company Device for heating baths, in particular fused metal baths
US2029580A (en) * 1933-11-04 1936-02-04 Morgan Construction Co Combustion conditioning system for soaking pits
DE669877C (en) * 1934-03-26 1939-01-05 Benno Schilde Maschb Akt Ges Process for evenly heating long pipes by burning a gas-air mixture in the pipes

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733287A (en) * 1956-01-31 Cracking of hydrocarbon gases and heater therefor
US2432314A (en) * 1941-08-30 1947-12-09 Motorola Inc Gasoline burning hot-air heater
US2465711A (en) * 1944-04-03 1949-03-29 Clarkson Alick High velocity gaseous fuel burner for air heaters
US2551823A (en) * 1945-02-10 1951-05-08 William C Buttner Heating system
US2638889A (en) * 1947-05-08 1953-05-19 Doris B Dow Heat-treating element for heattreating furnaces
US2585892A (en) * 1949-06-30 1952-02-12 Jones & Laughlin Steel Corp Annealing furnace
US2700380A (en) * 1950-12-29 1955-01-25 Surface Combustion Corp Radiant tube heater and combustion air preheater therefor
US2785053A (en) * 1953-11-13 1957-03-12 Phillips Petroleum Co Process and apparatus for production of carbon black
US2852346A (en) * 1954-08-23 1958-09-16 Phillips Petroleum Co Process and apparatus for the production of carbon black
US3046977A (en) * 1957-05-21 1962-07-31 Carroll C Figge Heating kettle
US3201861A (en) * 1960-03-31 1965-08-24 Fromson H A Method of making a double-walled tube
US3212554A (en) * 1961-04-18 1965-10-19 Selas Corp Of America Method of furnace operation
US3111941A (en) * 1961-10-09 1963-11-26 Preway Inc Gas dishwasher venting and heating arrangement
US3304987A (en) * 1963-01-17 1967-02-21 S C A T Soc Pour La Constructi Apparatus for heating with natural gas
US3201098A (en) * 1963-06-17 1965-08-17 Air Heaters Inc Portable heater
US3705617A (en) * 1970-11-05 1972-12-12 Badger Co Sublimation apparatus and method
US3828762A (en) * 1972-09-21 1974-08-13 Borg Warner Tubular heat exchanger
US3907510A (en) * 1972-12-26 1975-09-23 Chemsoil Corp System for burning sulfur and absorbing sulfur dioxide in water
US3920383A (en) * 1974-06-20 1975-11-18 Electric Furnace Co Fluted surface heat exchanger
US4047881A (en) * 1976-05-11 1977-09-13 Republic Steel Corporation Heat recuperator and shroud for radiant tube burner
US4344479A (en) * 1978-07-28 1982-08-17 Fuelsaver Company Process and apparatus utilizing common structure for combustion, gas fixation, or waste heat recovery
US4310303A (en) * 1980-07-11 1982-01-12 W. B. Combustion, Inc. Plug-in recuperator and method
US4559312A (en) * 1983-09-19 1985-12-17 Kennecott Corporation Sintering or reaction sintering process for ceramic or refractory materials using plasma arc gases
US4657074A (en) * 1985-02-27 1987-04-14 Diesel Kiki Co., Ltd. Heat exchanger for combustion heater
US4725223A (en) * 1986-09-22 1988-02-16 Maxon Corporation Incinerator burner assembly
US4800866A (en) * 1987-03-13 1989-01-31 Bloom Engineering Company, Inc. Low NOX radiant tube burner and method
US4828483B1 (en) * 1988-05-25 1994-03-22 Bloom Eng Co Inc Method and apparatus for suppressing nox formation in regenerative burners
US6019598A (en) * 1998-07-06 2000-02-01 Dana Corporation Air recuperator for combustion air burners
US7959431B2 (en) 2008-04-21 2011-06-14 Fives North American Combustion, Inc. Radiant tube with recirculation
US9909755B2 (en) 2013-03-15 2018-03-06 Fives North American Combustion, Inc. Low NOx combustion method and apparatus
US20170314784A1 (en) * 2016-04-27 2017-11-02 Superior Radiant Products Ltd. Optimization of gas fired radiant tube heaters
US10495307B2 (en) * 2016-04-27 2019-12-03 Superior Radiant Products Ltd. Optimization of gas fired radiant tube heaters

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Publication number Publication date
DE868647C (en) 1953-02-26
US2226816A (en) 1940-12-31
DE872244C (en) 1953-03-30

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