US3394886A - Control device for gas burners - Google Patents

Control device for gas burners Download PDF

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Publication number
US3394886A
US3394886A US530645A US53064566A US3394886A US 3394886 A US3394886 A US 3394886A US 530645 A US530645 A US 530645A US 53064566 A US53064566 A US 53064566A US 3394886 A US3394886 A US 3394886A
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US
United States
Prior art keywords
air
gas
pipe
burner
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US530645A
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English (en)
Inventor
Robert G Budden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roberts Gordon Appliance Corp
Original Assignee
Roberts Gordon Appliance Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roberts Gordon Appliance Corp filed Critical Roberts Gordon Appliance Corp
Priority to US530645A priority Critical patent/US3394886A/en
Priority to GB25277/66A priority patent/GB1120504A/en
Priority to NL666609515A priority patent/NL140326B/xx
Priority to DE1526026A priority patent/DE1526026C3/de
Application granted granted Critical
Publication of US3394886A publication Critical patent/US3394886A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/06—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated
    • F24D5/08—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated with hot air led through radiators

Definitions

  • An object is to provide a control device of this kind with an air filter and in which the control device maintains a correct proportion of air and gas even if the air filter becomes partly blocked so that the supply of air is reduced.
  • FIG. 1 is a vertical, cross-sectional view, partly diagrammatic, of a control device embodying this invention.
  • FIG. 2 shows a diagrammatic view illustrating variously arranged heating systems in which control devices embodying this invention may be used, the view having been taken from the opposite side shown in FIG. 1.
  • FIG. 3 is a fragmentary sectional view on line 33, FIG. 1.
  • FIG. 2 shows a heating system of the kind in which my improved control device may be employed and includes a number of heating devices, each including a combustion chamber 6.
  • 11 represents control devices to which air and gas are supplied and from which a combustible mixture of these two ingredients is supplied to a combustion chamber.
  • This invention represents a vacuum pump driven by a motor 9 and which may take products of combustion from the control devices 1 1 or from the outer air and withdraw products of combustion from the pipe 10 and establish a par tial vacuum in this pipe.
  • This invention relates particularly to the control devices 11, one of which is shown in FIG. 1, and includes a suitable housing or cavity which is capable of being essentially air-tight to which the admission of air is controlled through an air inlet duct 16 which may have an air chamber 17 arranged therein so that the air entering the inlet duct through an opening 18 must pass through the air cleaner before entering the housing 15.
  • 19 represents a valve or damper by means of which the supply of air to the inlet duct 16 may be controlled.
  • 22 represents a gas pipe which in the construction shown extends into the housing 15 and has a branch 24 leading to a burner 25 arranged in the combustion chamber 6.
  • 27 represents another branch connected with the gas pipe 22 for supplying gas to a pilot burner.
  • the gas passing to the main burner 25 flows through a valve 29 including a transverse wall 28 having an opening controlled by a damper 30 which is mounted on a flexible diaphragm 31 which is held in place by means of a cap 32 in the housing 15 and having an air inlet 33 through which air from the housing 15 may pass to act ice on the upper surface of the diaphragm 31 to which the valve 30 is connected.
  • the pipe 24 contains another valve of Well known construction including a valve disk or damper 35 controlling an opening in the valve 36 in the gas passage, and suitably controlled electrically, for example, by means of solenoids.
  • This electric valve 37 may be controlled by a thermostat located in the space to be heated and is normally open fully but will close when the supply of heat is to be interrupted so that no gas will flow through the pipe 24 to the burner.
  • the branch pipe 24 of the gas pipe 22 is also provided at 40 with a fixed restriction through which the supply of gas to the burner is restricted as desired.
  • the pipe 24 then discharges gas into a mixing duct 43 leading to the burner.
  • Adjacent to the elbow 42 the mixing conduit 43 is provided with an inlet for air which may be of any desired construction, that shown including an opening or orifice 44 from the interior of the chamber 15, and a plate or suitable control device 45 is provided which may be adjusted permanently to a position in which the correct amount of air is supplied through the orifice 44 for mixture with the gas discharged to the mixing duct 43.
  • This mixing duct 43 terminates at its lower end in the burner 25 located in the combustion chamber 6.
  • the branch pipe 27 leading from the gas pipe 22 conducts fuel to a pilot burner 48 of any usual or suitable construction.
  • this branch pipe 27 passes to a gas supply valve 49 which may be similar to the valve in the branch pipe 24, including a valve disk or damper 50 controlling an opening in a transverse wall 51 of the pipe 27.
  • the disk or damper 50 is mounted on a flexible diaphragm 52 which is held in place by means of a cover 53 having an air inlet opening 54. From this control valve the gas passes to another electrically controlled valve 56 similar to the valve 37, and a fixed restriction 58 is provided in this pipe to restrict the flow of gas to that part of the burner.
  • the pilot gas pipe terminates in an elbOW 60 leading to a mixing chamber or duct 61 to which air is admitted, for example, through an orifice 62 controlled by means of a plate 63 extending partly across this opening.
  • This air orifice and the air orifice 44 require no adjustment when correctly set.
  • the mixing duct 61 for the pilot burner terminates at the pilot burner. Combustion of the gas discharged at the pilot burner may be effected in any suitable manner, for example, by means of a spark plug 65 having terminals 66 adjacent to the gas discharge opening of the pilot burner.
  • the mixing duct 61 terminates in an enlarged space and the spark plug is provided with a tubular extension which extends through this space and has screw threads for securing the same to the burner housing.
  • the spark plug also has apertures in the wall of the tubular extension, into which combustible mixture from the mixing duct 61 may enter and flow within the tubular extension of the spark plug directly to the terminals 66 thereof.
  • the burner housing is also provided with a series of passages 76 extending from the enlarged part of the mixing duct 61 downwardly into the combustion chamber, these passages 76 being arranged about the spark plug.
  • the main burner 25 is located in the combustion chamber 6 and the pipe 10 carrying products of combustion from another burner, or air, if no other burner is in operation, passes into the combustion chamber 6 and mixes with the flame and products of combustion discharged from the burner 25.
  • a wall 70 forms an extension of the mixing chamber 43 and when the burner is in operation this wall also deflects the products of combustion entering from the mixing chamber in a direction approximately parallel to the axis of the combustion chamber thus mixing with the products of combustion or air passing through the pipe 10.
  • the combustion chamber 6 may be of any desired length. If a large amount of heat is required the products of combustion from the flame of the burner will be carried to the end of the combustion chamber so as to produce a larger area of the combustion chamber through which infra red heat may be discharged.
  • the air inlet 16 and gaseous fuel enters through the pipe 22 under a pressure more than atmospheric pressure.
  • the gas flow then splits and one part flows toward the pilot control valves 50 and 56 and the other part to the main gas valves 29 and 36.
  • pressure exerted on their diaphragms raises the valve steams attached to the diaphragm tending to close the valves, thus reducing the pressure at the points beyond these valves.
  • pressure from the interior of the housing 15 is exerting a force in the opposite direction on the diaphragms tending to open the valves.
  • valves will reach equilibrium when the pressure of the air corresponds to the reduced pressure in the pipe 42. These pressures consequently will be exactly the same as the pressures acting on the top surface of the diaphragms 31 and 52 and on the air orifices 44 and 62.
  • These orifices are predetermined fixed orifices which admit the proper amount of air in order to create a combustible mixture of fuel and air for the pilot and main flame.
  • pressure acting on the diaphragms may be balanced because pressure of gas acting on the lower faces of the diaphragms is restricted by the disks 30 and s0. 1
  • the pressure in the housing 15 decreases either because the damper 19 is partly closed or because the filter 17 is partly clogged, the inlet pressure of air at the discharge orifices 44 and 62 will be reduced and less air will be admitted to the burner mixing chamber. If under these conditions the gas flow rate will remain constant, the mixture will no longer be properly proportional for combustion, but by means of the construction described, as the pressure in the housing 15 becomes reduced the air pressure in the diaphragms 31 and 52 will be less and will slightly close the valves 29 and 50, thus reducing the pressure of gas to the pressure corresponding to the pressure of the air acting on air orifices 44 and 62 so that the flow of air and gas is proportioned.
  • gas pipe 22 as extending into the air housing 15
  • this gas pipe may be arranged on the exterior of the air container or housing and suitable supply lines for air leading to the air orifices 44 and 62 and to the diaphragms 31 and 62 maybe provided.
  • the wall of the burner which extends into the combustion chamber is shielded from hot gases which may travel through the pipe 10.
  • the burner wall 70 By maintaining the burner wall 70 at a lower temperature less heat is conducted into the combustible mixture within the passage 43. This prevents this mixture from reaching temperatures which would afl ect the flame propagation, which in turn affects the main burner flame stability.
  • a control device for the supply of air and combustible gas to a burner including:
  • an air inlet to said housing including a filter in said inlet through which the air passes;
  • a pipe for gaseous fuel extending through said hous a valve in said gas pipe responsive to variable air pressure in said housing to control the flow of fuel in said conduit according to the air pressure in said housing;
  • a control device including means for controlling the flow of air through said inlet to said housing to control the air pressure in said housing.
  • a control device for the supply of a combustible mixture of air and gas to a burner including:
  • valve in said pipe for controlling the rate of flow of gas in said pipe, including a valve controlling damper which is responsive to variable pressures in said housing;
  • a diaphragm connected with said damper and acted on by gas on one face thereof and by air at variable air pressure on the opposite face thereof to move said damper toward and from closing position;
  • a control device including a restriction in said gas pipe beyond said valve for reducing the fiow of gas to the burner.
  • a control device including an electrically operated valve in said gas pipe beyond said first-mentioned valve which shuts off the flow of gas in said gas pipe when no heat is required from said burner.
  • a control device for the supply of air and combustible gas to a burner including:
  • a pipe for gaseous fuel extending through said housing and divided into two branches, one leading to the burner;
  • a pilot burner connected with the other branch of said a control valve in each branch of said gas pipe, said control valves being responsive to the variable pressure of air in said housing and to fuel in said gas pipe controlling the flow of fuel in said pipe;
  • sid control valve each including transverse walls in said branch pipes and having openings therein;
  • a control device for regulating the supply of combustible gas to a burner including:
  • an air inlet including a filter through which the air passes into said housing
  • valve means responsive to the variable air pressure in said housing and to fuel pressure in said fuel pipe to control the flow of fuel in said conduit in proportion to air pressure in said housing;
  • a combustion chamber for gaseous fuel including:
  • a fuel pipe for gaseous fuel extending through said housing and divided to provide fuel to a main burner and to a pilot burner
  • spark plug having a hollow tubular body portion extending through said passage and into said combustion chamber
  • a control device for the supply of air and combustible gas to a burner including:
  • a combustion chamber including said burner and to which the combustible mixture is transmitted
  • a control device for the supply of air and combustible gas to a burner including:
  • a pipe for gaseous fuel extending through said housing and divided into two branches, one leading to the burner,
  • control valves being responsive to the variable pressure of air in said housing and to fuel in said gas pipe controlling the flow of fuel in said pipe,
  • control valves each including transverse walls in said branch pipes and having openings therein,

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Gas Burners (AREA)
US530645A 1966-02-28 1966-02-28 Control device for gas burners Expired - Lifetime US3394886A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US530645A US3394886A (en) 1966-02-28 1966-02-28 Control device for gas burners
GB25277/66A GB1120504A (en) 1966-02-28 1966-06-07 Control device for gas burners
NL666609515A NL140326B (nl) 1966-02-28 1966-07-07 Regelinrichting voor een brandertoestel.
DE1526026A DE1526026C3 (de) 1966-02-28 1966-07-19 Brennmittelgemisch-Steuereinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US530645A US3394886A (en) 1966-02-28 1966-02-28 Control device for gas burners

Publications (1)

Publication Number Publication Date
US3394886A true US3394886A (en) 1968-07-30

Family

ID=24114411

Family Applications (1)

Application Number Title Priority Date Filing Date
US530645A Expired - Lifetime US3394886A (en) 1966-02-28 1966-02-28 Control device for gas burners

Country Status (4)

Country Link
US (1) US3394886A (de)
DE (1) DE1526026C3 (de)
GB (1) GB1120504A (de)
NL (1) NL140326B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034264A1 (de) * 1980-02-15 1981-08-26 Roberts-Gordon Appliance Corporation Strahlungsheizsystem mit verbessertem Brennerkopf
US4319125A (en) * 1979-07-20 1982-03-09 Prince Fred J Infra-red radiant heater system
US5211331A (en) * 1990-04-13 1993-05-18 Roberts-Gordon, Inc. Control in combination with thermostatically responsive assembly
WO1997040320A1 (en) * 1996-04-18 1997-10-30 Eric Willms Infrared heating system and metering element
WO1999027307A1 (en) 1997-11-26 1999-06-03 Roberts-Gordon Llc Gas fired infrared radiant tube heating system using plural burner assemblies and single gas delivery system
US6188836B1 (en) 1999-03-22 2001-02-13 Appliance Development Corporation Portable radiant heater with two reflectors
US20050266362A1 (en) * 2004-06-01 2005-12-01 Stone Patrick C Variable input radiant heater
US20060169275A1 (en) * 2005-02-02 2006-08-03 Roberts-Gordon Llc Variable input radiant heater

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2134083A (en) * 1936-06-18 1938-10-25 Leon H Ballou Control mechanism for gas burners
US2369746A (en) * 1945-02-20 miller
US2373326A (en) * 1941-03-01 1945-04-10 Union Fork & Hoe Co Gas burner heating system and apparatus therefor
US3115302A (en) * 1959-08-03 1963-12-24 Ronald D Corey Heating method, means and control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2369746A (en) * 1945-02-20 miller
US2134083A (en) * 1936-06-18 1938-10-25 Leon H Ballou Control mechanism for gas burners
US2373326A (en) * 1941-03-01 1945-04-10 Union Fork & Hoe Co Gas burner heating system and apparatus therefor
US3115302A (en) * 1959-08-03 1963-12-24 Ronald D Corey Heating method, means and control

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319125A (en) * 1979-07-20 1982-03-09 Prince Fred J Infra-red radiant heater system
EP0034264A1 (de) * 1980-02-15 1981-08-26 Roberts-Gordon Appliance Corporation Strahlungsheizsystem mit verbessertem Brennerkopf
US5211331A (en) * 1990-04-13 1993-05-18 Roberts-Gordon, Inc. Control in combination with thermostatically responsive assembly
WO1997040320A1 (en) * 1996-04-18 1997-10-30 Eric Willms Infrared heating system and metering element
WO1999027307A1 (en) 1997-11-26 1999-06-03 Roberts-Gordon Llc Gas fired infrared radiant tube heating system using plural burner assemblies and single gas delivery system
US6188836B1 (en) 1999-03-22 2001-02-13 Appliance Development Corporation Portable radiant heater with two reflectors
US20050266362A1 (en) * 2004-06-01 2005-12-01 Stone Patrick C Variable input radiant heater
US20060169275A1 (en) * 2005-02-02 2006-08-03 Roberts-Gordon Llc Variable input radiant heater

Also Published As

Publication number Publication date
GB1120504A (en) 1968-07-17
DE1526026B2 (de) 1973-11-15
NL140326B (nl) 1973-11-15
DE1526026C3 (de) 1974-06-27
NL6609515A (de) 1967-08-29
DE1526026A1 (de) 1970-03-05

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