EP0108032A2 - Dispositif de commande pour une source de chaleur chauffée au combustible - Google Patents

Dispositif de commande pour une source de chaleur chauffée au combustible Download PDF

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Publication number
EP0108032A2
EP0108032A2 EP83710071A EP83710071A EP0108032A2 EP 0108032 A2 EP0108032 A2 EP 0108032A2 EP 83710071 A EP83710071 A EP 83710071A EP 83710071 A EP83710071 A EP 83710071A EP 0108032 A2 EP0108032 A2 EP 0108032A2
Authority
EP
European Patent Office
Prior art keywords
fuel
valve
heat source
pilot
line
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Withdrawn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
EP83710071A
Other languages
German (de)
English (en)
Other versions
EP0108032A3 (fr
Inventor
Peter Friedrich
Ulrich Ortlinghaus
Hans Pütz
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.)
Vaillant GmbH
Original Assignee
Joh Vaillant GmbH and Co
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 Joh Vaillant GmbH and Co filed Critical Joh Vaillant GmbH and Co
Publication of EP0108032A2 publication Critical patent/EP0108032A2/fr
Publication of EP0108032A3 publication Critical patent/EP0108032A3/fr
Withdrawn legal-status Critical Current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
    • F23N5/105—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/085—Regulating fuel supply conjointly with another medium, e.g. boiler water using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/28—Ignition circuits
    • F23N2227/30—Ignition circuits for 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
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves
    • 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
    • F23N2235/24—Valve details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Definitions

  • the present invention relates to a control device for a fuel-heated heat source according to the preamble of the main claim.
  • a tension spring 27 acts on the membrane, which acts in the same direction as the compression spring 26.
  • the actuating rod is assigned the normally open contact 17 and a further normally open contact 28, which lies in the course of a power supply line 29, which is preceded by a further normally open contact 30, which is combined with the normally open contact 16 and forms a main switch.
  • a pressure port 52 of the diaphragm pump is connected to a pneumatic control box 53 which has a membrane 54 inside, the control rod 55 of which is connected to the one valve body 56 of the valve 5.
  • the actuating rod 55 passes through the valve body 5 and is connected on its end facing away from the membrane to the armature 11 of the thermoelectric ignition fuse and is under the restoring force of a compression spring 57 which tends to close the valve body 56.
  • the solenoid valve 45 is also connected, which controls an outlet opening from the control box into the atmosphere with its valve body 58, which in the idle state due to the action of a spring, not shown, away from the valve seat 59 in opening sense of the control box is pressed.
  • thermoelectric ignition fuse in which manual application of the thermoelectric ignition fuse is omitted, is also shown in the second exemplary embodiment according to
  • thermoelectric fuse is under the action of a spring, not shown, which has the tendency to the thermoelectric fuse in the
  • the normally closed contact 124 is connected on the side facing away from line 125 via a further line 140 to a timing element 141, the output of which is connected to a branch point 142.
  • the branch point 142 is connected to point 132 by means of a line 143, into which a resistor 144 is inserted.
  • point 142 is connected to a further branching point 147 by a line 145 into which a resistor 146 is looped.
  • a capacitor 148 is connected to branch point 147 and a Z diode 149 is connected to the second.
  • the capacitor 148 is connected on its side facing away from the branch point 147 to another branch point 150, from which a line 151 goes to the other pole of the current source 152.
  • a shutdown of the heat source 101 is brought about by de-energizing the motor of the pump 110, the insufficient water flow causes the low water alarm to respond, the low water safety valve 112 to close and the contact 114 to open.
  • the circuit for the current source 152 is interrupted, but also the gas path.
  • the main and pilot burner extinguish immediately, a cooling phase begins for the thermocouple 120, while the armature 122 of the thermoelectric fuse is still activated, but the contact 124 is open.
  • a restart of the pump 110 would have no effect since the circuit for the current source is impossible through the contact 124 which is still open. Only when the thermoelectric ignition fuse drops does the contact 124 close and makes it possible to restart the heat source 101.
  • a heat source 201 has a heat exchanger 202 that flows from a main burner 203 via a gas line 204 is fed from a gas network 205.
  • a liquid fuel could also be considered as fuel.
  • Water from a water network 206 is supplied to the heat exchanger 202 with the interposition of a Venturi nozzle 207 via a return line 208 and, in the heated state, is taken from a supply line 209 which has a nozzle 210.
  • the continuous gas water heater shown in the exemplary embodiment for preparing hot service water for sanitary purposes it could just as well be a circulating water heater or boiler, then the outlet of the nozzle would have to be connected to the water line 206 by switching on a pump and one or more radiators.
  • An ignition gas line 249 which is provided with a check valve 248 and leads to the pilot burner 232, branches off from the gas line 204 behind the valve 242.
  • the tap valve To switch off the heat source that is in proper operation, only the tap valve has to be closed, whereupon the valve 219 via the water switch 211 closes and the gas supply to the main burner 203 is cut off.
  • the main burner goes out, the pilot burner 232 also goes out.
  • the pilot burner 261 is still burning, but can no longer heat the thermocouple 238.
  • the armature 239 is torn from the electromagnet 233 ' by the springs 243 and 247 after the thermoelectric ignition fuse has cooled down, so that the valves 242 and 245 close. This also interrupts the gas supply to the second pilot burner 261.
  • a water switch 322 provided with a membrane 321
  • the membrane is assigned a membrane plate and two actuating rods 323 and 324, of which the actuating rod 323 is connected to a valve body 325 of the valve 304, which is pressed against the restoring force of a compression spring 326 against the seat of the valve 304.
  • a pressure spring 327 acts on the membrane, which acts in the same direction as the pressure spring 326.
  • the actuating rod is assigned a normally open contact 317, which lies in the course of a power supply line 329, which is preceded by a further normally open contact 338, which is combined with the normally open contact 316 and forms a main switch.
  • a pressure port 352 of the diaphragm pump is connected to a pneumatic control box 353, which has a membrane 354 inside, the control rod 355 of which is connected to the one valve body 356 of a valve 328.
  • the actuating rod 355 passes through the valve body 356 and, on its end facing away from the membrane, is placed against a further actuating rod 360, which is connected to the armature 311 of the thermoelectric ignition fuse, and is under the restoring force of a compression spring which tends to actuate the valve body 305 and 356 close and put the poles together.
  • Both the valve body 361 of the valve 305 and the valve body 356 of the valve 328 are both under the action of a return spring 362 and 363, which both strive to the associated valve body to press into the seats.
  • a return spring 362 and 363 which both strive to the associated valve body to press into the seats.
  • Ignition gas line 367 Another branches off downstream of the valves 304/325 and 305/361 from the main gas line to the main burner 303 Ignition gas line 367, which is provided with a check valve 368, which opens into the ignition gas line 318 downstream of the valve 328/356.
  • the control device according to FIG. 4 just described has the following function:
  • the main switch consisting of the work contacts 316 and 330, is first closed, which initially has no effect. If the nozzle valve 309 is turned on, water begins to flow in the water line 308, a negative pressure develops at the Venturi nozzle 307, which is communicated to the switching chamber 322 via the lines 319 and 320. Due to the pressure difference, the membrane moves upward against the restoring force of the spring 326, as a result of which the valve body 325 of the valve 304 lifts off its seat and secondly the contact 317 is closed.
  • the device can be designed in such a way that the contact 317 closes earlier than the valve body 325 lifts off its seat.
  • the ignition transformer now continuously generates sparks at the electrodes 343, which are initially ineffective since the gas valves 305 and 356 are closed.
  • the energized coil 345 of the solenoid valve closes the seat 359 with its valve body 358, so that the control box 353 is sealed from the atmosphere.
  • the valve 305/361 closes and the heat source is finally out of operation.
  • the heat source can also be switched off by actuating the main switch 316/330, in this case the circuit of the thermoelectric ignition fuse is disconnected, the valve 305/361 closes suddenly and causes all three burners to go out.
  • the valve 411 also has a return spring 426 which ensures that the valve is closed in the rest position.
  • An equivalent return spring 427 also has the control valve 414, which has a minimum passage position and a maximum passage position and a continuous intermediate position between the two is able to take.
  • An output line 431 of the operational amplifier 430 leads to a solenoid 432 of the control valve 4I4, the other side of which is connected to a line 433 which leads to a pole of a voltage source 434.
  • the other pole 435 of the operating voltage source is connected via a line 436 to an operating voltage connection of the operational amplifier, likewise the pole 434 of the voltage source is connected via a line 437 to the other supply voltage connection of the operational amplifier.
  • the fuel-heated heat source 401 according to FIG. 5 has the following function:
  • thermovoltage At a low value, which on the one hand protects the thermocouple against excessive heating and thus against rapid destruction, and on the other hand guarantees a fast fall-off time.
  • the thermal voltage decreases continuously. This does indeed require an increase in the manipulated variable of the control circuit, namely an opening of the control valve 414, but this has no effect since the pilot burner 415 has gone out. If the holding limit voltage for the electromagnet 419 is undershot, the return spring 424 tears off the armature 420 from the electromagnet, so that the control valve 422 is closed. This closes the entire fuel path.
  • thermocouple 416 was heated, the longer this process takes. For protection against unburned fuel flowing out of the main and pilot burner, it is essential that this time is kept to a minimum. This can be achieved with the regulation of the thermal voltage according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Control Of Combustion (AREA)
EP83710071A 1982-10-23 1983-10-12 Dispositif de commande pour une source de chaleur chauffée au combustible Withdrawn EP0108032A3 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE3239648 1982-10-23
DE3239647 1982-10-23
DE3239650 1982-10-23
DE3239647 1982-10-23
DE3239650 1982-10-23
DE3239648 1982-10-23
DE3239646 1982-10-23
DE3239645 1982-10-23
DE3239646 1982-10-23
DE3239645 1982-10-23

Publications (2)

Publication Number Publication Date
EP0108032A2 true EP0108032A2 (fr) 1984-05-09
EP0108032A3 EP0108032A3 (fr) 1985-01-09

Family

ID=27510732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83710071A Withdrawn EP0108032A3 (fr) 1982-10-23 1983-10-12 Dispositif de commande pour une source de chaleur chauffée au combustible

Country Status (1)

Country Link
EP (1) EP0108032A3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561757A1 (fr) * 1984-03-21 1985-09-27 Sdecc Chauffe-bains a gaz sans veilleuse permanente
FR2602030A1 (fr) * 1986-07-23 1988-01-29 Vaillant Sarl Dispositif de commande pour la mise en marche du bruleur a gaz d'un chauffe-eau
EP0681147A1 (fr) * 1994-05-04 1995-11-08 Robert Bosch Gmbh Chauffe-eau instantané chauffé au gaz
WO2004072555A1 (fr) * 2003-02-13 2004-08-26 Mertik Maxitrol Gmbh & Co. Kg Procede et circuit d'allumage d'un flux de gaz
US7919732B2 (en) 2003-02-13 2011-04-05 Mertik Maxitrol Gmbh & Co., Kg Method and circuit for igniting a gas flow

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527286A (en) * 1947-05-19 1950-10-24 Milwaukee Gas Specialty Co Safety shutoff control for plural pilot gaseous fuel burner systems
US2642309A (en) * 1950-07-07 1953-06-16 Missouri Automatic Contr Corp Temperature responsive actuator
US2940255A (en) * 1954-01-07 1960-06-14 Jet Heet Inc Burner flame length control apparatus
FR1232440A (fr) * 1959-04-21 1960-10-07 Theobald Ets A Dispositif de sécurité positive totale pour brûleurs à gaz
FR79483E (fr) * 1961-03-30 1962-12-07 Theobald Ets A Dispositif de sécurité positive totale pour brûleurs à gaz
GB972887A (en) * 1962-07-20 1964-10-21 Horstmann Gear Co Ltd Improvements in manually operated control valves for gas burners
US3262486A (en) * 1964-08-07 1966-07-26 John J Rose Ultraviolet light responsive flame modulating control
DE1278086B (de) * 1959-10-16 1968-09-19 Saunier Duval Sicherheits-Zuendeinrichtung fuer gasbeheizte Waermegeraete
DE1813806A1 (de) * 1968-02-26 1969-09-04 Lyon Applic Catalytiques Sicherheitsvorrichtung fuer Gasgeraete
DE1913935A1 (de) * 1968-03-29 1969-10-09 Strache Gasappbau Kg UEberwachungseinrichtung fuer ein gasbeheiztes Geraet
FR2018613A6 (fr) * 1968-09-21 1970-05-29 Imp Werke Gmbh
US3620658A (en) * 1970-04-09 1971-11-16 Charles L Tappin Fail-safe fuel cutoff device
DE2317857A1 (de) * 1973-04-10 1974-10-24 Licentia Gmbh Flammenkontrolleinrichtung bei gasbetriebenen absorber-kuehlgeraeten
FR2434342A1 (fr) * 1978-08-25 1980-03-21 Scholtes Ets Eugen Dispositif de commande pour four de cuisson a gaz
EP0065011A1 (fr) * 1980-10-31 1982-11-24 Yamatake-Honeywell Co. Ltd. Dispositif de vanne entrainee par une pompe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962093A (en) * 1957-01-22 1960-11-29 Baso Inc Control apparatus
DE1779478A1 (de) * 1968-08-16 1971-11-04 Braun Ag Warmwasserbereiter mit magnetelektrischer Zuendvorrichtung
DE2410766C3 (de) * 1974-03-07 1983-01-13 Danfoss A/S, 6430 Nordborg Stellvorrichtung mit einem Axial- Stellmotor, insbesondere zur Betätigung von Gasheizungsventilen
FR2373753A1 (fr) * 1976-12-07 1978-07-07 Bourguignonne Mec Smb Dispositif d'allumage a securite pour bruleur ou panneau radiant
DE2805113C2 (de) * 1978-02-07 1983-02-17 Pintsch Bamag Antriebs- Und Verkehrstechnik Gmbh, 4220 Dinslaken Zündsystem für gasbetriebene Brenneinrichtungen

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527286A (en) * 1947-05-19 1950-10-24 Milwaukee Gas Specialty Co Safety shutoff control for plural pilot gaseous fuel burner systems
US2642309A (en) * 1950-07-07 1953-06-16 Missouri Automatic Contr Corp Temperature responsive actuator
US2940255A (en) * 1954-01-07 1960-06-14 Jet Heet Inc Burner flame length control apparatus
FR1232440A (fr) * 1959-04-21 1960-10-07 Theobald Ets A Dispositif de sécurité positive totale pour brûleurs à gaz
DE1278086B (de) * 1959-10-16 1968-09-19 Saunier Duval Sicherheits-Zuendeinrichtung fuer gasbeheizte Waermegeraete
FR79483E (fr) * 1961-03-30 1962-12-07 Theobald Ets A Dispositif de sécurité positive totale pour brûleurs à gaz
GB972887A (en) * 1962-07-20 1964-10-21 Horstmann Gear Co Ltd Improvements in manually operated control valves for gas burners
US3262486A (en) * 1964-08-07 1966-07-26 John J Rose Ultraviolet light responsive flame modulating control
DE1813806A1 (de) * 1968-02-26 1969-09-04 Lyon Applic Catalytiques Sicherheitsvorrichtung fuer Gasgeraete
DE1913935A1 (de) * 1968-03-29 1969-10-09 Strache Gasappbau Kg UEberwachungseinrichtung fuer ein gasbeheiztes Geraet
FR2018613A6 (fr) * 1968-09-21 1970-05-29 Imp Werke Gmbh
US3620658A (en) * 1970-04-09 1971-11-16 Charles L Tappin Fail-safe fuel cutoff device
DE2317857A1 (de) * 1973-04-10 1974-10-24 Licentia Gmbh Flammenkontrolleinrichtung bei gasbetriebenen absorber-kuehlgeraeten
FR2434342A1 (fr) * 1978-08-25 1980-03-21 Scholtes Ets Eugen Dispositif de commande pour four de cuisson a gaz
EP0065011A1 (fr) * 1980-10-31 1982-11-24 Yamatake-Honeywell Co. Ltd. Dispositif de vanne entrainee par une pompe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561757A1 (fr) * 1984-03-21 1985-09-27 Sdecc Chauffe-bains a gaz sans veilleuse permanente
FR2602030A1 (fr) * 1986-07-23 1988-01-29 Vaillant Sarl Dispositif de commande pour la mise en marche du bruleur a gaz d'un chauffe-eau
EP0681147A1 (fr) * 1994-05-04 1995-11-08 Robert Bosch Gmbh Chauffe-eau instantané chauffé au gaz
WO2004072555A1 (fr) * 2003-02-13 2004-08-26 Mertik Maxitrol Gmbh & Co. Kg Procede et circuit d'allumage d'un flux de gaz
AU2004211492B2 (en) * 2003-02-13 2009-03-26 Maxitrol GmbH & Co. KG Method and circuit for igniting a gas flow
US7919732B2 (en) 2003-02-13 2011-04-05 Mertik Maxitrol Gmbh & Co., Kg Method and circuit for igniting a gas flow

Also Published As

Publication number Publication date
EP0108032A3 (fr) 1985-01-09

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Inventor name: FRIEDRICH, PETER