EP0100758A2 - Sicherheitseinrichtung für Gaswärmeeinrichtungen - Google Patents

Sicherheitseinrichtung für Gaswärmeeinrichtungen Download PDF

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Publication number
EP0100758A2
EP0100758A2 EP83830161A EP83830161A EP0100758A2 EP 0100758 A2 EP0100758 A2 EP 0100758A2 EP 83830161 A EP83830161 A EP 83830161A EP 83830161 A EP83830161 A EP 83830161A EP 0100758 A2 EP0100758 A2 EP 0100758A2
Authority
EP
European Patent Office
Prior art keywords
tube
safety device
solenoid valve
temperature
wall
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.)
Withdrawn
Application number
EP83830161A
Other languages
English (en)
French (fr)
Other versions
EP0100758A3 (de
Inventor
Pierluigi De' Stefani
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.)
Officine Di Pernumia Di Giancarlo De' Stefani & C Sas
Original Assignee
Officine Di Pernumia Di Giancarlo De' Stefani & C Sas
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
Priority claimed from IT22721/82A external-priority patent/IT1152316B/it
Priority claimed from IT24234/82A external-priority patent/IT1153019B/it
Application filed by Officine Di Pernumia Di Giancarlo De' Stefani & C Sas filed Critical Officine Di Pernumia Di Giancarlo De' Stefani & C Sas
Publication of EP0100758A2 publication Critical patent/EP0100758A2/de
Publication of EP0100758A3 publication Critical patent/EP0100758A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/16—Measuring bridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/22—Pilot burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/02—Pilot flame sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/14—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermo-sensitive resistors

Definitions

  • the present invention relates to a safety device for gas heating apparatus, of the type comprising a pilot burner having a tube for the pilot flame, a main gas supply solenoid valve and means for controlling this solenoid valve to maintain it open when the ambient conditions are normal and to close it upon a reduction in the oxygen content in the environment in which the heating apparatus is located.
  • the safety rules generally prescribe that "draught free" gas appliances be provided with safety devices operable to securely interrupt the operation of the gas apparatus before the percentage-content of oxygen in the local atmosphere falls below a determined threshold value.
  • thermocouple junction constituted by the cap of a thermocouple of conventional type, detects the position and conformation of the flame which burns in the tube of the pilot burner.
  • the electromotive force generated by the thermocouple is used to control the solenoid valve of the main gas inlet to the apparatus.
  • the pilot flame in such devices in time causes the formation of deposits and carbonaceous encrustations on the cap of the thermocouple and on its end part exposed to the flame.
  • Such carbon encrustations become red hot giving rise to so-called hot spots.
  • the temperature detected by the thermocouple junction and the electro-. motive force generated by this can fail accurately to reflect the position and conformation of the pilot flame and therefore the oxygen content in the environment.
  • thermocouple cap within the pilot burner tube where the pilot flame burns in normal conditions, especially when this cap is asymmetrical with respect to the axis of the tube, induces unpredictable turbulence phenomena which detract from the good reliability and repeatability in the operation of the safety device.
  • the object of the present invention is therefore to obviate the disadvantages met with in safety devices of the prior art in such a way as to arrive at a highly reliable device without prejudicing the correct operation of the pilot burner and therefore the heating apparatus controlled thereby.
  • the problem underlying the present invention is therefore to be able to detect variations in the oxygen content of the environment in which the apparatus is positioned to operate, by the detection of a thermal condition associated with the pilot burner flame whereby to acts on the main gas inlet valve to close it when the combustion conditions are dangerous, without causing disturbances to the flow of gas through the pilot burner tube supplying the pilot flame and to maintain the device in conditions of high efficiency.
  • a safety device of the type specified above, which is characterised by the fact that the said solenoid valve control means includes a temperature transducer the temperature sensitive element of which is fixed to the wall of the pilot burner tube in a position lying between the transverse section of the tube at which the pilot flame burns in normal combustion conditions and the section to which this flame is displaced when the normal oxygen content in the environment has fallen below the normal. percentage value of the ambient air.
  • the said temperature sensitive element is constituted by the thermo-electric junction of a thermocouple connected to the said main gas supply solenoid valve.
  • one of the elements forming the thermo electric junction is constituted by the wall of the pilot burner tube itself, the other element forming the thermocouple being welded to the outer surface of this wall.
  • a pilot burner is conventionally constituted by a tube 2 which, by means of a coupling 3, is connected to the gas supply pipe 4 leading from'a solenoid valve schematically indicated 5. Gas is supplied.to this latter element from a source not indicated via the main pipe 6. From this solenoid valve 5 there also extends a pipe 7 for conveying gas in a conventional way to the main burner of the heating apparatus, not illustrated.
  • holes 8 are formed at the base of the tube 2 for the admission of combustion air which mixes with the gas coming from the tube 4.
  • a transverse metal mesh 10 fixed to the inner walls of the tube itself.
  • a spark ignition device 11 of conventional type, is provided to the side of the tube 2 on the support panel 1, the electrode 12 of the ignition device 11 being arranged to lie over the tube opening 9 for igniting the pilot flame.
  • thermo-electric junction 13 of a thermo-couple Fixed to the outside of the tube 2 in a position lying between the transverse section at which the mesh 10 is located and the tube opening 9, is a temperature sensitive element, formed by a thermo-electric junction 13 of a thermo-couple constituted by two metal conductor elements 1 4 and 15 in themselves conventional in the thermo - couple art.
  • the junction 13 is, for example, welded to the wall 16 of the tube 2.
  • thermo-uple 14 and 15 and the associated thermo - electric junction 13 constitutes a temperature trans- duceraccording to the invention.
  • the position in which the junction 13 is fixed to the wall of the tube 2 is nearer the mesh 10 than the opening 9.
  • thermo-couple The conductors 14 and 15 forming the thermo-couple are in - turn connected, in a conventional way, to the electromagnet of the solenoid valve 5 to control its closure in the manner which will become clear from the following description.
  • the operation of the safety device is as follows. When combustion is normal, that is when the environment in which the heating apparatus is put into operation has a normal retained oxygen content, the pilot burner flame forms, conventionally, on the mesh 10 within the tube 2.
  • pilot flame indicated A and in solid outline in Figure 1, contacts the inner wall of the tube 2 the temperature of which is therefore significantly raised.
  • thermo-electric junction 13 In these conditions the thermo-electric junction 13 generates a corresponding relatively high electromotive force which, via the conductors 14 and 15, maintains the electromagnet of the solenoid valve excited and therefore maintains this valve in an open condition.
  • gas is therefore allowed to flow both towards the pilot burner and towards the main burner of the heating apparatus.
  • the pilot burner flame becomes displaced from the position A to the position indicated B and in broken outline in Figure 1, forming at the opening of the tube 2.
  • thermo-electric junction 13 of the thermo-couple In -these conditions the section of the wall 16 of the tube 2 lying between the mesh 10 and opening 9 becomes necessarily subject to a lowering in temperature, which is immediately sensed by the thermo-electric junction 13 of the thermo-couple. The electromotive force generated by this junction 13 therefore falls below the previous value, thereby causing the solenoid valve 5 to close and thus interrupting any supply of gas.
  • the open end of the tube 2 can be formed in accordance with the variant illustrated in the Figure 2.
  • the free end of the tube 2 is provided with a tubular extension 17 constituted by a helically wound metal wire fitted externally over the tube 2.
  • the reference numeral 19 generally indicates a thermistor constituting a temgerature sensitive element in place of the thermo-electric junction 13 of Figure 1.
  • This thermistor the resistance of which varies with variations in temperature, is fixed to the outer wall 16 of the tube 2, for example in the same position and manner of connection as the junction 13. It constitutes part of one arm of a conventional electrical bridge, for . example a Wheatstone bridge, generally indicated 20.
  • This bridge is constituted by opposing resistors 21 and 22 as well as the resistor ' 23 connected opposite the thermistor 19.
  • the resistor 23 is of the variable resistance type manually adjustable for the necessary adjustment and calibration operations.
  • the bridge 20 is connected across the electrical supply lines 24 and 25 coming from an electrical energy source 26, for example an alternating current source, via a transformer 27 and a rectifier 28.
  • an electrical energy source 26 for example an alternating current source
  • This bridge is also connected, by terminals 29 and 20, to a signal amplifier 31 connected between the supply lines 24 and 25.
  • This amplifier 31 is in turn connected in a conventional manner to a Schmitt trigger circuit 32 which is also connected between the supply lines 24 and 25 and controls, via a triac 33 the main gas-supply solenoid valve 5.
  • the temperature trans- d ucer device sends a signal which, via the amplifier 3 1 , the Schmitt trigger 32 and the triac 33, maintains the solenoid valve 5 open.
  • the temperature reduction in the wall of the tube 2 detected by the thermistor 19 generates in the bridge 20 an electrical condition which causes the closure of the valve 5 whereby to interrupt the flow of gas.
  • the device comprises a pilot burner 34, a spark ignition device 35 and a thermo-couple 36.
  • the pilot burner 34 has a tubular body 37 with a vertically disposed axis x - x the lowerend of which is connected to a gas inlet tube 38 by means of couplings 39 and 40 and a bi-cconical sealing ring 41.
  • the pilot burner 34 has a tubular sleeve 42 made of material having good thermo-electric properties (for example a nickel-chrome alloy or other material having a sufficiently high Seebeck coefficient)which is fitted coaxially over the upper end of the body 37 and terminates at the top with an outlet section 43 having, in the example illustrated, a restricted section with perimetral slots 44.
  • material having good thermo-electric properties for example a nickel-chrome alloy or other material having a sufficiently high Seebeck coefficient
  • the reference numeral 45 indicates a transverse mesh disposed within the tube 37 at a predetermined distance "a" upstream from the outlet mouth 46.
  • the reference numeral 4 8 indicates radial holes provided in the body 37 at its lower end , for the intake of combustion air for the pilot flame.
  • the spark ignition device 35 includes a cylindrical support "body 49 made from electrically insulating material, the axis y - y of which extends. parallel to the axis x - x and in mutually spaced relationship therewith, as well as an electrically conducting rod-like element 50 which coaxially and rigidly extends through the said support body 49.
  • the rod-like element 50 is connected to a spark generator, not shown because it is conventional, and has a free upper end 51 bent at a right angle and lying over the mouth 46 of the burner.
  • the burner 34 and the ignition device 35 are fixed,in the. relative positions described above,to a bracket 52 by means of a yoke 53 screwed to the bracket itself by means of a screw 53a.
  • the bracket 52 is in turn intended to be mounted on the gas heating apparatus not illustrated.
  • thermocouple 36 has a hot thermo-electric junction, indicated 54, positioned in correspondence with the tube 42 of the pilot burner 34. More particularly, the thermo-electric junction 54 is formed by one end 55 of a rod-like element 56 made of material having suitable thermo-electric properties (for example constantan), which is welded to the outer surface of the tube 42 which constitutes the other element of the hot junction 54.
  • a rod-like element 56 made of material having suitable thermo-electric properties (for example constantan), which is welded to the outer surface of the tube 42 which constitutes the other element of the hot junction 54.
  • the end 55 of the rod-like element 56 is welded externally to the tube 42 at a point along -its length at a predetermined distance "b" downstream from the mesh 45.
  • the junction element constituted by the tube 42, is electrically connected to earth by means of the pipe 38.
  • the electromotive force generated by the thermocouple is transmitted to a terminal 57 by means of a copper wire 58 which is of suitable length and externally insulated, and has one end 59 soldered to the end 60 of the rod-like element 56 and the other end 61 soldered to the terminal 57.
  • the terminal 57 is insulated by a bush 62 from a metal support sleeve 63 traversed by the wire 58.
  • A. coupling 64 is fitted on the sleeve 63 for fixing the terminal 57 into a gas inlet solenoid valve such as that indicated 5 in' Figure 1, having an earthed body.
  • thermo-couple the electromotive force generated by the thermo-couple is presented within the solenoid valve, and in particular between its body and the terminal 57.
  • This electromotive force is utilised to activate the gas inlet solenoid valve in a conventional manner as already described with reference to Figure 1.
  • the reference numeral 65 indicates a glass fibre sheath extending along the rod-like element 56 from its end 55 soldered to the sleeve 42 to terminate a short distance beyond the copper wire 58.
  • Reference numeral 66 indicates an electric welding spot effected to rigidly connect together the tube 42 and the body 37 of the pilot burner 34.
  • the inlet gas from the tube 38 and the air drawn in by the holes 48 mix within the body 37, traverse the mesh 45 and flow out from the mouth 46 where they are ignited by a spark struck between the end 51 of the ignition device and the tube 42.
  • the pilot flame thus ignited forms downstream from the mesh 45, occupying a section of the chamber 47 corresponding to the point where the end 55 of the rod-like element 56 is welded to the tube 42.
  • the device reacts to variations in the composition .of the atmosphere in the same way as already described with reference to the devices of Figures 1 and 3.
  • thermo-electric junctions 13 and 54 or the thermistor 19 are not in contact with the pilot flame and thus maintain their conditions of maximum efficiency for a long time,since they are not subject to encrustations of a carbonaceous nature or to other deteriorations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
EP83830161A 1982-08-03 1983-08-03 Sicherheitseinrichtung für Gaswärmeeinrichtungen Withdrawn EP0100758A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT22721/82A IT1152316B (it) 1982-08-03 1982-08-03 Dispositivo di sicurezza per apparecchi di riscaldamento a gas
IT2272182 1982-08-03
IT2423482 1982-11-12
IT24234/82A IT1153019B (it) 1982-11-12 1982-11-12 Dispositivo di sicurezza per apparecchi di riscaldamento a gas

Publications (2)

Publication Number Publication Date
EP0100758A2 true EP0100758A2 (de) 1984-02-15
EP0100758A3 EP0100758A3 (de) 1984-06-06

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ID=26328248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83830161A Withdrawn EP0100758A3 (de) 1982-08-03 1983-08-03 Sicherheitseinrichtung für Gaswärmeeinrichtungen

Country Status (2)

Country Link
EP (1) EP0100758A3 (de)
ES (1) ES8405127A1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613041A1 (fr) * 1987-03-24 1988-09-30 Op Srl Dispositif de securite pour appareils de chauffage a gaz
EP0727613A1 (de) * 1995-02-20 1996-08-21 John Stuart Fleming Verfahren und Vorrichtung zur Regelung eines Heizgerätes für entflammbares Fluidum
EP0997688A2 (de) 1998-10-30 2000-05-03 FAGOR, S.Coop Pilotflammenbrenner mit einem Luftdetektor
WO2000050815A1 (en) * 1999-02-26 2000-08-31 Robertshaw Controls Company Oxygen depletion sensor
EP1039220A1 (de) * 1999-03-19 2000-09-27 Worgas Bruciatori S.R.L. Verfahren und Vorrichtung zur Brennersicherheitsüberwachung
US6339645B2 (en) 1998-03-06 2002-01-15 Telefonaktiebolaget Lm Ericsson (Publ) Pseudo-random sequence generator and associated method
EP1291580A1 (de) * 2001-09-10 2003-03-12 Sourdillon Gasgerät mit Brenner im niedrigen Teil und mit Sicherheitsmitteln, und die Verwendung als Wassererhitzer
FR2829566A1 (fr) * 2001-09-10 2003-03-14 Sourdillon Sa Appareil a gaz avec bruleur en partie basse, equipe de moyens de securite, et chauffe-eau en faisant application
FR2829565A1 (fr) * 2001-09-10 2003-03-14 Sourdillon Sa Appareil a gaz avec bruleur en partie basse, equipe de moyens de securite, et chauffe-eau en faisant application
EP1420206A1 (de) * 2002-11-13 2004-05-19 FAGOR, S.Coop Verbrennungsdetektionsvorrichtung mit einem thermoelektrischem Generator
EP1253376A3 (de) * 2001-04-26 2005-01-19 David Deng Gaszündsystem und Verfahren zur Detektion des Sauerstoffniveaus und Gaseinrichtung damit ausgerüstet

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430887A (en) * 1943-09-25 1947-11-18 Gen Controls Co Thermocouple for pilot burners
FR1182023A (fr) * 1956-12-05 1959-06-22 Robertshaw Fulton Controls Co Brûleur pilote et son thermocouple
FR1237754A (fr) * 1959-06-08 1960-08-05 Kromschroeder Ag G Dispositif de sûreté en cas de manque de gaz
US3295585A (en) * 1965-07-12 1967-01-03 American Gas Ass Apparatus for sensing the composition of gases, and gas burner system employing same
GB1145077A (en) * 1965-04-19 1969-03-12 Honeywell Inc Improvements in or relating to burner control apparatus
FR2028564A1 (de) * 1969-01-18 1970-10-09 Marcoerqueaga Iriondo
GB2021253A (en) * 1978-05-22 1979-11-28 Straitz J F Pilot burners for flare stacks
GB2081905A (en) * 1980-07-01 1982-02-24 Mitsubishi Electric Corp Oxygen density detecting device in a combuster

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430887A (en) * 1943-09-25 1947-11-18 Gen Controls Co Thermocouple for pilot burners
FR1182023A (fr) * 1956-12-05 1959-06-22 Robertshaw Fulton Controls Co Brûleur pilote et son thermocouple
FR1237754A (fr) * 1959-06-08 1960-08-05 Kromschroeder Ag G Dispositif de sûreté en cas de manque de gaz
GB1145077A (en) * 1965-04-19 1969-03-12 Honeywell Inc Improvements in or relating to burner control apparatus
US3295585A (en) * 1965-07-12 1967-01-03 American Gas Ass Apparatus for sensing the composition of gases, and gas burner system employing same
FR2028564A1 (de) * 1969-01-18 1970-10-09 Marcoerqueaga Iriondo
GB2021253A (en) * 1978-05-22 1979-11-28 Straitz J F Pilot burners for flare stacks
GB2081905A (en) * 1980-07-01 1982-02-24 Mitsubishi Electric Corp Oxygen density detecting device in a combuster

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613041A1 (fr) * 1987-03-24 1988-09-30 Op Srl Dispositif de securite pour appareils de chauffage a gaz
EP0727613A1 (de) * 1995-02-20 1996-08-21 John Stuart Fleming Verfahren und Vorrichtung zur Regelung eines Heizgerätes für entflammbares Fluidum
AU711388B2 (en) * 1995-02-20 1999-10-14 John Stuart Fleming Method and apparatus for the control of flammable fluid heating apparatus
US6339645B2 (en) 1998-03-06 2002-01-15 Telefonaktiebolaget Lm Ericsson (Publ) Pseudo-random sequence generator and associated method
EP0997688A2 (de) 1998-10-30 2000-05-03 FAGOR, S.Coop Pilotflammenbrenner mit einem Luftdetektor
WO2000050815A1 (en) * 1999-02-26 2000-08-31 Robertshaw Controls Company Oxygen depletion sensor
EP1039220A1 (de) * 1999-03-19 2000-09-27 Worgas Bruciatori S.R.L. Verfahren und Vorrichtung zur Brennersicherheitsüberwachung
EP1253376A3 (de) * 2001-04-26 2005-01-19 David Deng Gaszündsystem und Verfahren zur Detektion des Sauerstoffniveaus und Gaseinrichtung damit ausgerüstet
EP1291580A1 (de) * 2001-09-10 2003-03-12 Sourdillon Gasgerät mit Brenner im niedrigen Teil und mit Sicherheitsmitteln, und die Verwendung als Wassererhitzer
FR2829564A1 (fr) * 2001-09-10 2003-03-14 Sourdillon Sa Appareil a gaz avec bruleur en partie basse, equipe de moyens de securite, et chauffe-eau en faisant application
FR2829566A1 (fr) * 2001-09-10 2003-03-14 Sourdillon Sa Appareil a gaz avec bruleur en partie basse, equipe de moyens de securite, et chauffe-eau en faisant application
FR2829565A1 (fr) * 2001-09-10 2003-03-14 Sourdillon Sa Appareil a gaz avec bruleur en partie basse, equipe de moyens de securite, et chauffe-eau en faisant application
US6648627B2 (en) 2001-09-10 2003-11-18 Sourdillon Gas appliance with a burner in the lower part, equipped with safety means, and resulting water heater
EP1420206A1 (de) * 2002-11-13 2004-05-19 FAGOR, S.Coop Verbrennungsdetektionsvorrichtung mit einem thermoelektrischem Generator

Also Published As

Publication number Publication date
ES523432A0 (es) 1984-06-01
ES8405127A1 (es) 1984-06-01
EP0100758A3 (de) 1984-06-06

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