US3582247A - Apparatus for detecting traces of heavy combustible gases and heating systems incorporating such apparatus - Google Patents

Apparatus for detecting traces of heavy combustible gases and heating systems incorporating such apparatus Download PDF

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Publication number
US3582247A
US3582247A US833385A US3582247DA US3582247A US 3582247 A US3582247 A US 3582247A US 833385 A US833385 A US 833385A US 3582247D A US3582247D A US 3582247DA US 3582247 A US3582247 A US 3582247A
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United States
Prior art keywords
burner
air
feeding
channel
collector
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Expired - Lifetime
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US833385A
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English (en)
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Bernard Faure
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Individual
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Individual
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Publication of US3582247A publication Critical patent/US3582247A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply

Definitions

  • the presenti'nvention has for its object a solution for such a problem asprovided, by simple means adapted to detect the sheet of gases arising when a leak occurs fortuitously and to stop immediately thereupon the operation of the apparatus fed with a combustible gas.
  • Such a burner may be adjusted in a manner such that in the presence of a pure atmosphere the flame is at the limit of its stability while it moves off the nozzle and vanishes as soon as the air supplied to it shows lower contents of combustive matter.
  • the metastable adjustment considered is obtained by adjusting the output speed of the mixture of air and gas so that it may be slightly below the speed of propagation of the flame in the mixture considered within a pure atmosphere.
  • Applicant has executed experiments on a burner provided with an injector of a diameter of 0.1675 mm. and a nozzle of 4.8 mm. and it has been found that the speed forwhich the flame is released was reached for a proportion of air and gas in the mixture feeding the burner which corresponds to 75 percent of the proportion of air in the stoechimetric mixture. For such a proportion the mixture contains 22.12 litres of air for each litre of butane.
  • the composition of the mixture fed to the burner becomes 22.0! litres of air (22.l2-0.1 1) for 1.11 litres of butane (l+().11).
  • the mixture includes 19.83 litres of air for l litre'of butane.
  • the burner is of a high sensitivity in the .presence of traces of combustible gas and may serve for detecting leaks of the latter.
  • the present invention has also for its object a central heating burner to be erected underground and which is provided with safety means operating in the case of a leaking ofa heavy combustible gas.
  • FIG. 1 is a general view of an underground central heating system
  • FIG. 2 is a view of a detail of said central heating system
  • FIG. 3 illustrates'a further detail.
  • the boiler 1 erected in the basement 2 of a house is fed with fuel constituted by liquefied gas carried in a tank 3 located outside the house, the feeding with combustive air being ensured through the ventilator 4. l
  • the combustible gas is fed from the tank 3 through the channel 5 to the safety block 6 and thence through the channel 7 to the boiler l.
  • the safety block 6 is connected through the channel 8 with a collector 9 lying on the basement floor and adapted to suck in air from the lowermost point of the premises, said collector communicating with the smoke exhaust channel 10 passing out of the safety block 6.
  • the safety block 6 described with further detail hereinafter with reference to FIG. 3 includes a safety burner 15 fed with combustible gas through the above-mentioned channel 5 and with combustive air through said channel 8.
  • the channel 8 is connected with the collector 9 constituted as illustrated in FIG. 2 by a bellshaped member 11 including an antideflagrating grid-shaped screen 12 the spacing of which above ground is adjusted by three feet-forming screws 13.
  • a suction is produced inside said bell-shaped member by the caseof aburner 15 which shows the above-mentioned features, the total energy dissipated by said burner is equal to 77 millithermies per hour while the volumeof air sucked in is of a magnitude of 30 to 35 cub. cm. per hour.
  • the safety block includes a fluidtight casing 14 connected on the one hand with the air-tapping channel 8 and on the other hand with the exhaust channel 10.
  • the safety burner 15 which is adjusted in a manner well known per se so as to lie on the boundary of stability.
  • Said burner 15 is fed with combustible gas through a thermostatically controlled cock 16 which is fed in its turn with said gas through the channel 5 feeding also the channel Heading to the' boiler 1.
  • Said burner 15 lies within an antideflagrating chamber subdivided into two compartments.
  • the lower compartment 26 surrounds the opening 17 through which primary air reaches the burner 15 while the upper compartment '19 surrounds the area in which the flame 18 is obtained said latter compartment being connected with a tapping 20 feeding external air and said tapping being preferably also provided with an antideflagrating grid and with a flap adapted to adjust the operative area of said tapping.
  • a generator of high voltage 21 controlled by a handle 22 is connected with an electrode 23 by a wire 24 so as to supply a spark for the ignition of the burner without it being necessary to open the antideflagrating chamber.
  • the bulb 25 of the thermostat controlling the cock 16 is subjected to the action of the flame 18 and its heating'provides for the actual opening of the cock 16 which feeds combustible gas to the boiler l and to the detecting burner 15. Said burner 15 is thus fed with combustive air tapped out of the lower layers of the atmosphere in the basement 12 and whenever said combustive air carries traces of combustible gas the flame vanishes and this controls the stopping of the operation of the boiler.
  • last-mentioned means include means collecting samples of air out of the area surrounding the apparatus, a channel connecting said collector with the external atmosphere and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter.
  • last-mentioned means include means collecting samples of air out of the area surrounding the apparatus, a channel connecting said collector with the external atmosphere and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter, an outer fluidtight chamber inserted in said channel in registry with the burner, means feeding combustible gas both into the pipe feeding the apparatus and into the means feeding the burner, a cock inserted in last-mentioned feeding means adapted to stop the feed of combustible fluid, a thermostat controlled by the burner flame and controlling the cock to make the latter stop the feed of combustible fluid upon extinction of the burner flame.
  • last-mentioned means include means collecting samples of air out of the area surrounding the apparatus, a channel connecting said collector with the external atmosphere and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter, an outer fluidtight chamber inserted in said channel in registry with the burner, means feeding combustible gas both into the pipe feeding the apparatus and into the means feeding the burner, a cock inserted in last-mentioned means adapted to stop the feed of combustible fluid, a thermostat controlled by the burner flame and con: trolling the cock to make the latter stop the feed of combustible fluid upon extinction of the burner flame and an inner antideflagrating chamber surrounding the burner inside the outer chamber and through which the burner receives its secondary air from the outer atmosphere.
  • An apparatus a as claimed in claim 1 adapted to be inserted between a tank carrying the combustible fluid and located outside the premises housing the apparatus and the pipe feeding the latter, wherein last-mentioned means include means collecting samples of air out of the area surrouading the apparatus, a channel connecting said collector with the external atmospheric and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter, an outer fluidtight chamber inserted in said channel in registry with the burner, means feeding combustible gas both into the pipe feeding the apparatus and into the means feeding the burner, a cock inserted in last-mentioned feeding means, fed by the tank and adapted to stop the feed of combustible fluid, a thermostat controlled by the burner flame and controlling the cock to make the latter stop the feed of combustible fluid upon extinction of the burner flame.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
US833385A 1968-06-28 1969-06-16 Apparatus for detecting traces of heavy combustible gases and heating systems incorporating such apparatus Expired - Lifetime US3582247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR157121 1968-06-28

Publications (1)

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US3582247A true US3582247A (en) 1971-06-01

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ID=8651824

Family Applications (1)

Application Number Title Priority Date Filing Date
US833385A Expired - Lifetime US3582247A (en) 1968-06-28 1969-06-16 Apparatus for detecting traces of heavy combustible gases and heating systems incorporating such apparatus

Country Status (10)

Country Link
US (1) US3582247A (enrdf_load_stackoverflow)
BE (1) BE734461A (enrdf_load_stackoverflow)
BR (1) BR6910286D0 (enrdf_load_stackoverflow)
DE (1) DE1932150A1 (enrdf_load_stackoverflow)
ES (1) ES368731A1 (enrdf_load_stackoverflow)
FR (1) FR1584325A (enrdf_load_stackoverflow)
GB (1) GB1252831A (enrdf_load_stackoverflow)
NL (1) NL6909971A (enrdf_load_stackoverflow)
NO (1) NO132001C (enrdf_load_stackoverflow)
SE (1) SE357264B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409457A1 (fr) * 1977-09-26 1979-06-15 Gandolfi Maria L Appareil de securite contre les fuites de gaz
US5239980A (en) * 1992-05-19 1993-08-31 Hilt Fay E J Forced air furnace control system and method of operation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115379B (zh) * 2013-02-01 2015-06-03 中国石油天然气股份有限公司 一种注汽锅炉燃气泄漏与锅炉安全运行的控制系统
DE102023111776A1 (de) 2023-05-05 2024-11-07 Elringklinger Ag Schutzelement, Verfahren zu dessen Herstellung, Energiespeichervorrichtung und Kraftfahrzeug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997797A (en) * 1934-01-03 1935-04-16 James J Kelley Apparatus for controlling oil burners
US2585882A (en) * 1945-10-12 1952-02-12 Weissman Danger detecting means for gas distributing systems
US3236284A (en) * 1963-01-02 1966-02-22 Joseph W Kemper Monitoring system for a combustion apparatus and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997797A (en) * 1934-01-03 1935-04-16 James J Kelley Apparatus for controlling oil burners
US2585882A (en) * 1945-10-12 1952-02-12 Weissman Danger detecting means for gas distributing systems
US3236284A (en) * 1963-01-02 1966-02-22 Joseph W Kemper Monitoring system for a combustion apparatus and the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409457A1 (fr) * 1977-09-26 1979-06-15 Gandolfi Maria L Appareil de securite contre les fuites de gaz
US4209291A (en) * 1977-09-26 1980-06-24 Barbara Horvath Safety apparatus for stopping gas leakages
US5239980A (en) * 1992-05-19 1993-08-31 Hilt Fay E J Forced air furnace control system and method of operation

Also Published As

Publication number Publication date
NO132001C (enrdf_load_stackoverflow) 1975-09-03
SE357264B (enrdf_load_stackoverflow) 1973-06-18
FR1584325A (enrdf_load_stackoverflow) 1969-12-19
DE1932150A1 (de) 1970-08-27
ES368731A1 (es) 1971-06-16
NO132001B (enrdf_load_stackoverflow) 1975-05-26
NL6909971A (enrdf_load_stackoverflow) 1969-12-30
BE734461A (fr) 1969-08-14
GB1252831A (enrdf_load_stackoverflow) 1971-11-10
BR6910286D0 (pt) 1973-02-08

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