US3240255A - Device for regulating an oil burner - Google Patents

Device for regulating an oil burner Download PDF

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Publication number
US3240255A
US3240255A US378223A US37822364A US3240255A US 3240255 A US3240255 A US 3240255A US 378223 A US378223 A US 378223A US 37822364 A US37822364 A US 37822364A US 3240255 A US3240255 A US 3240255A
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United States
Prior art keywords
oil
tank
burner
blower
pipe
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Expired - Lifetime
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US378223A
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English (en)
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Fischbach Manfred
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Individual
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Individual
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/04—Level control, e.g. controlling quantity of material stored in vessel with auxiliary non-electric power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/12—Details
    • F23D5/14—Maintaining predetermined amount of fuel in evaporator

Definitions

  • the invention relates to a device for regulating an oil burner to which the combustion air is supplied under overpressure by a blower and the oil from an oil tank and in which the oil level is constantly maintained at the same height by means of a float.
  • the tank containing the float is connected through a conduit with the pressure or delivery side of the blower supplying the combustion air, so that a pressure prevails in the oil tank which varies in proportion with the quantity of air delivered by the blower. Since this pressure also determines the quantity of oil issuing from the oil tank, the ratio between the weight of oil and the volume of air remains approximately constant within the range of adjustment of the burner.
  • the oil tank must be so situated relative to the burner that the outlet position of oil from the tank is such that no oil can flow out of the tank when the blower is inoperative.
  • This positioning of the tank also applies if the outlet from the tank is located within a pipe or riser which extends in gas tight manner from the cover or lid of the oil tank, which is in communication with atmosphere through the cover or lid, and which terminates below the oil level as determined by the float in the tank.
  • an oil level can be established in a riser of this kind and in conjunction with the size of the outflow orifice determines the quantity of oil issuing from the tank.
  • a device for regulating an oil burner to which combustion air is supplied under overpressure by a blower comprising an oil tank connectable with a delivery pipe and having a cover fitted thereto, a needle valve operable to control the admission of oil into the tank, a float connected with the needle valve to control operation thereof, a control pipe provided with a lateral outflow orifice and co-operating with an adapter connectable with an outlet pipe to the burner, said control pipe having the outer end thereof projecting through the cover to communicate with atmosphere, and a riser secured to the inside of the cover, said riser communicating with atmosphere through the cover, surrounding the control pipe to form an annular space therearound, and having the inner end thereof located at a position such that it is immersed in oil contained in the tank.
  • a device according to the invention has the advantage that on the one hand one has complete freedom concerning the positioning of the oil tank, and on the other hand, errors in positioning the oil tank and the burner housing relative to each other do not influence the quantity of fuel.
  • each burner has at least one operating position for maximum thermal output and one for minimum thermal output, and it is difficult to establish equally satisfactory conditions for the two operating positions referred to, that is, to accomplish wholly soot-free combustion and to obtain a very high degree of efficiency at the same time.
  • each burner In view of tolerance in the manufacture of the burners, and of the varying conditions encountered on installation, each burner must be so adjusted after installation that it operates satisfactorily for the smallest quantity of heat as well as for the greatest. This, however, is not attainable or is obtainable only with great difficulty, with conventional variation of the outflow orifice, which is usually performed by means of a needle valve. This difliculty is also eliminated by a regulating device according to the invention.
  • the outflow orifice is a hole of predetermined caliber in the control pipe, and the control pipe is axially ad justable relative to an adapter connectable with an outlet pipe to the burner.
  • the approximate level of the outflow orifice of the control pipe is approximately fixed for use with a given kind of burner and in order to bring the burner into service, the blower is set for the minimum thermal output of the burner on the one hand, and for the maximum setting on the other, and it is possible to select the most advantageous flame image for both positions by rotating the control pipe, and then to select a middle setting which still results approximately in optimum conditions for both operating positions in the prevailing conditions of installation.
  • a very small variation in the height level of the outflow orifice suflices to vary the flame image considerably.
  • the adaptor is provided with a collar which projects a little above the oil level determined in the oil tank by the float, and which surrounds the control pipe to form therewith an annular space.
  • the outflow oriflee may thus be positioned below the oil level in the oil tank, so that a higher oil level than that which corresponds to the difference between the oil levels in the oil tank and in the riser is possible.
  • oil is fed to a tank 1 through a pipe 2 from a storage tank, not shown, situated at a position above that of the tank 1.
  • a float 3 in known manner controls a needle valve 4, so that oil can enter the tank 1 only when the oil level drops below a predetermined level.
  • An adaptor 5 having an internal screw thread is fastened in the base of the oil tank 1 and an outlet pipe 6, which leads to the burner housing 7, is connected to the adaptor 5.
  • An outlet control pipe 8 which is screwed into the adaptor 5 extends above the cover for the tank 1 and is screwed into the internal screw thread of the pipe section 5.
  • the control pipe 8 is provided with a lateral outflow orifice 9 of a predetermined caliber.
  • the height of the orifice 9 relative to the bottom of tank 1 may be varied by screwing the control pipe 8 into or out of the adapter 5.
  • the adaptor 5 is provided with a collar 10 which forms an annular space around the control pipe 8 and which extends a little above the predetermined level of the oil in the tank 1 and houses a sealing ring 11 secured on the control pipe 8 to seal off the screwed connection between the adaptor 5 and the control pipe 8.
  • the adaptor 5 and control pipe 8 control the flow of oil from tank 1 to the outflow pipe 6 and are surrounded by a riser 12 which is screwed in gastight manner to the cover of the oil tank 1 and which surrounds the control pipe 8 to form an annular space 14 therearound.
  • the riser 12 is placed in communication with the atmosphere through a hole 13 formed in the cover.
  • the riser 12 terminates below the predetermined level of oil in the tank 1, that is, the riser 12 is in communication with the atmosphere and its inner end is immersed in the oil in the tank.
  • the blower pressure thus prevails in the oil tank when the blower is in operation, so that an oil level is established in the annular space 14 between the control pipe 8 and riser 12 which corresponds to the difference between the blower pressure and atmospheric pressure. Together with the size of the orifice 9, the height of the column of oil thus formed in the riser 12 determine the quantity of oil flowing out.
  • This oil flows into the outlet pipe 6 which is also in communication with atmosphere through the control pipe 8.
  • a column of oil can thus form in the outlet pipe 6 the height of which is determined by the difference between the pressure in the blower 16 and atmospheric pressure, but which is not decisive in respect of the quantity of oil flowing to the burner.
  • the orifice 9 may lie on the line of the float, but may lie above or below the same.
  • the height of the column of oil above the orifice 9 may thus be varied in order to obtain the most favourable conditions in each case.
  • the drawing shows an overpressure burner whose housing is closed off at the top by plates 17 so that annular gaps 18 are formed between the plates, through which the combustible mixture may emerge from the burner case.
  • the burner housing 7 fits on a pipe connector 19 which is secured to the output pipe of the blower 16.
  • a solenoid 21 has an armature 22 pivoted about a pin 23 and is mounted on the cover of the oil tank 1.
  • the armature 22 carries a spindle 24, which is guided in a tube 25 secured to the cover of the tank in gastight manner.
  • the spindle 24 terminates above an arm 20 which is fastened to the float 3.
  • the solenoid is normally energised, that is, the spindle 24 does not act on the float 3.
  • a device for regulating an oil burner to which combustion air is supplied under overpressure by a blower comprising an oil tank connectable with a delivery pipe and having a cover fitted thereto, means connecting the blower with the tank to place the tank under pressure, a needle valve operable to control the admission of oil into the tank, a float connected with the needle valve to control operation thereof, an adapter secured t9 t e bottom or the tank and arranged for connection with an outlet pipe to the burner, the adapter including a collar extending above the oil level in the tank, a control pipe screwed into the adapter for axial adjustment relative to the adapter and forming an annular space with said collar, said control pipe being provided with a lateral outflow orifice of predetermined caliber and having its outer end projecting through the cover to communicate with atmosphere, and a riser secured to the inside of the cover, said riser communicating with atmosphere through the cover, surrounding the control pipe to form an annular space therearound, and having the inner end thereof located at a position such that it is immer
  • a device for regulating an oil burner to which combustion air is supplied under overpressure by a blower comprising an oil tank connectable with a delivery pipe and having a cover fitted thereto, means connecting the blower with the tank to place the tank under pressure, a needle valve operable to control the admission of oil into the tank, a float connected with the needle valve to control operation thereof, an adapter secured to the bottom of the tank and arranged for connection with an outlet pipe to the burner, the adapter including a collar extending above the oil level in the tank, a control pipe screwed into the adapter for axial adjustment relative to the adapter and forming an annular space with said collar, said control pipe being provided with a lateral outflow orifice of predetermined caliber and having its outer end projecting through the cover to communicate with atmosphere, a riser secured to the inside of the cover, said riser communicating with atmosphere through the cover, surrounding the control pipe to form an annular space therearound, and having the inner end thereof located at a position such that it i immersed in oil contained in
  • a device for regulating an oil burner to which combustion air is supplied under overpressure by a blower comprising an oil tank connectable with a delivery pipe and having a cover fitted thereto, means connecting the blower with the tank to place the tank under pressure, a needle valve operable to control the admission of oil into the tank, a float connected with the needle valve to control operation thereof, an adapter secured to the bottom of the tank and arranged for connection with an outlet pipe to the burner, the adapter including a collar extending above the oil level in the tank, a control pipe screwed into the adapter for axial adjustment relative to the adapter and forming an annular space with said collar, said control pipe being provided with a lateral outflow orifice of predetermined caliber and having its outer end projecting through the cover to communicate with atmosphere, a riser secured to the inside of the cover, said riser communicating with atmosphere through the cover, surrounding the control pipe to form an annular space therearound, and having the inner end thereof located at a position such that it is immersed in oil contained in the

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Feeding And Controlling Fuel (AREA)
US378223A 1963-07-01 1964-06-26 Device for regulating an oil burner Expired - Lifetime US3240255A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0040119 1963-07-01

Publications (1)

Publication Number Publication Date
US3240255A true US3240255A (en) 1966-03-15

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ID=7098105

Family Applications (1)

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US378223A Expired - Lifetime US3240255A (en) 1963-07-01 1964-06-26 Device for regulating an oil burner

Country Status (7)

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US (1) US3240255A (de)
AT (1) AT246896B (de)
BE (1) BE649923A (de)
CH (1) CH431784A (de)
DK (1) DK105116C (de)
GB (1) GB1003880A (de)
NL (1) NL6407383A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141937A (en) * 1977-05-18 1978-12-11 Mitsubishi Electric Corp Liquid fuel burner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685917A (en) * 1950-03-10 1954-08-10 Perry Stanley Oil burner
US2690766A (en) * 1949-12-12 1954-10-05 Breese Burners Inc Valve assembly for modulating burner control system
US2904107A (en) * 1954-12-20 1959-09-15 Sr Harry B Holthouse Fluid metering device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690766A (en) * 1949-12-12 1954-10-05 Breese Burners Inc Valve assembly for modulating burner control system
US2685917A (en) * 1950-03-10 1954-08-10 Perry Stanley Oil burner
US2904107A (en) * 1954-12-20 1959-09-15 Sr Harry B Holthouse Fluid metering device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141937A (en) * 1977-05-18 1978-12-11 Mitsubishi Electric Corp Liquid fuel burner

Also Published As

Publication number Publication date
DK105116C (da) 1966-08-22
CH431784A (de) 1967-03-15
NL6407383A (de) 1965-01-04
AT246896B (de) 1966-05-10
GB1003880A (en) 1965-09-08
BE649923A (de) 1964-10-16

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