EP0038193A1 - Brennerregelungseinrichtung - Google Patents

Brennerregelungseinrichtung Download PDF

Info

Publication number
EP0038193A1
EP0038193A1 EP81301587A EP81301587A EP0038193A1 EP 0038193 A1 EP0038193 A1 EP 0038193A1 EP 81301587 A EP81301587 A EP 81301587A EP 81301587 A EP81301587 A EP 81301587A EP 0038193 A1 EP0038193 A1 EP 0038193A1
Authority
EP
European Patent Office
Prior art keywords
circuit
combustion
period
conductor
air
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Withdrawn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
EP81301587A
Other languages
English (en)
French (fr)
Inventor
Yukuo Morohoshi
Ushio Date
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.)
Azbil Corp
Original Assignee
Azbil 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 Azbil Corp filed Critical Azbil Corp
Publication of EP0038193A1 publication Critical patent/EP0038193A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/08—Regulating air supply or draught by power-assisted systems
    • F23N3/082—Regulating air supply or draught by power-assisted systems 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
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/04—Prepurge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/12—Burner simulation or checking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/10—Air or combustion gas valves or dampers power assisted, e.g. using electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/10—High or low fire

Definitions

  • the present invention relates to an electronic burner control apparatus for use with a burner in which the air quantity for combustion may be controlled by means of a damper, and more particularly, to a burner control apparatus for fuel such as gases or oil in which a burner control circuit is failsafe.
  • a burner which is provided with a damper and having a relatively large combustion capacity normally requires, first, a firing sequence operation such as prepurge time, pilot ignition trial time, pilot stabilizing time and post purge time in order to achieve a complete combustion operation and secondly, a damper sequence operation associated with said first sequence operation at a given timing.
  • a firing sequence operation such as prepurge time, pilot ignition trial time, pilot stabilizing time and post purge time in order to achieve a complete combustion operation
  • a damper sequence operation associated with said first sequence operation at a given timing secondly, a damper sequence operation associated with said first sequence operation at a given timing.
  • it has been difficult to control the firing sequence and damper sequence electronically at the same time and these sequences have been secured by a combination of numerous switches and cams driven by means of a synchronous motor.
  • the present invention provides burner control apparatus for energizing a fuel supply device and air supply deivce of a burner in response to a demand signal, characterized in that it comprises:
  • the present invention provides a combustion control apparatus in which the damper cycle sequence operation is coupled to and associated with the combustion cycle sequence operation to form an overall sequence control system, thereby not only securing correct sequecne timing but providing extremely high reliability and failsafeness relative to trouble in the control apparatus itself.
  • the present system comprises a burner control apparatus which can achieve an operation sequence having a high safety by combination of a highly reliable and failsafe electronic burner control circuit for controlling normal combustion operation cycle sequences such as prepurge time, pilot ignition trial time, pilot stabilizing time and main ignition trial time, and an electronic control circuit for air source cycle sequence for sequentially controlling the drive of a burner air supply device such as a damper.
  • a highly reliable and failsafe electronic burner control circuit for controlling normal combustion operation cycle sequences such as prepurge time, pilot ignition trial time, pilot stabilizing time and main ignition trial time
  • an electronic control circuit for air source cycle sequence for sequentially controlling the drive of a burner air supply device such as a damper.
  • the electronic burner control circuit comprises an electronic timer circuit for securing prepurge time and a start check circuit connected to the electronic timer circuit.
  • the start check circuit has an air pressure switch adapted to drive the electronic timer circuit after assurance that air is not being supplied into the combustion furnace.
  • the start check circuit includes two air quantity state switches which indicate the state of the burner air supply device such as a damper, that is, high state (much air) of air supplied into the combustion furnace or low state (less air). Therefore, the electronic circuit is designed so as to start the timing operation only when the combustion air is not supplied and yet the air supply device is in the high state, at the time of start.
  • the air source cycle sequence electronic control circuit is connected to the electronic timer circuit so as to respond to the completion signal of prepurge time and completion signal of main ignition trial time from the electronic timer circuit. That is, the air source cycle sequence electronic control circuit has output switch means which, in response to the prepurge completion signal, again shifts the combustion air supply device to the low state, and in response to the main ignition trial completion signal, again shifts the combustion air supply device to the high state.
  • the electronic burner control circuit including the electronic timer circuit is not only formed into a failsafe circuit but the air source cycle sequence electronic control circuit connected to the electronic burner control circuit is also formed into a failsafe control circuit so that the air supply device such as a damper is suitably actuated at a given timing sequence time if trouble occurs in circuit.
  • the air supply control device such as a damper may effect two-position control or proportional control during the normal combustion operation.
  • the present burner control apparatus further comprises a safety switch drive circuit, which is actuated when firing failure occurs during the ignition trial operation and when flame loss occurs during the normal combustion operation, said drive circuit being also formed into a failsafe circuit.
  • the present burner control apparatus is wired to the burner using gas or oil as fuel for controlling the combustion operation, and, in the drawings, various parts of the burner are shown as well as the control circuit itself. Small open circles generally indicate the boundary between the burner and the control circuit.
  • FIG. 1A shows a load drive control circuit composed of a number of output switches or contacts of the present control apparatus, and an external burner (shown in symbolic form) connected to the load drive control circuit.
  • the control system includes 6 relays Kl to K6, and their contacts are referenced as K1-1, Kl-2, etc., and shown in the normal (unenergized) positions. Change-over contacts may be regarded as pairs of contacts and are referenced as, e.g., K3-12.
  • the two fuel valves 43 and 44 may be considered as first and second stage fuel supply devices as employed in a low-high change-over combustion system. Should the present burner control apparatus be used for the intermittent pilot system, the terminals ID and IT would be joined by a jumper wire 45. In the present embodiment, a description will be given of the case where no jumper wire 45 is present, that is where the apparatus is used for an interrupted pilot system.
  • An alarm device 46 is controlled by a contact SS-2 to indicate occurrence of abnormal combustion operation.
  • the normally open contact SS-2 of the safety cutoff switch is also connected to an indicator 33, which is in parallel with the alarm 46.
  • the indicators (such as 33) consist of a light emitting diode in parallel with an oppositely poled normal diode, with a ballast resistor connected in series with either the two diodes or just the light emitting diode. Further, there is an indicator 34 for indicating whether or not the control apparatus is in operation and an indicator 35 indicating whether or not the second fuel supply device 44 is energized.
  • the load control circuit further includes a control circuit for controlling the operation of an air supply control device 47 adapted to control the quantity of air for combustion.
  • the typical air supply control device 47 is normally provided with a damper device 37, but any device may be used as long as the total quantity of air supplied into the combustion furnace may be varied.
  • the control device 47 is shown as comprising a well-known recycle motor and a low-high setting unit, being a known two-position or on-off control deivce.
  • the air supply control device 47 may be operated as a well-known proportional control device, which will be described later. O (open) or H (high) indicatesthe high air state, C (closed) or L (low) the low air state.
  • FIGS 1B to 1D show the electronic parts of the control circuitry, with power supplies not shown. The finer details of the construction will not be described at length, since they will become apparent from the circuit diagrams themselves taken in conjunction with the description of the operation later.
  • the circuit comprises five main circuit sections: a first electronic timer circuit A, an air supply source control circuit B, an ignition source control circuit C, a second electronic timer circuit D, and a flame detection circuit E of well known type.
  • the first electronic timer circuit A is mainly composed of a safety cutoff switch drive circuit 53, a start check circuit 54, and a first semi-conductor timer circuit 55.
  • the safety cutoff switch drive circuit 53 includes the safety cutoff switch heater SS, which may be a well known manual return type thermally responsive switch of the bimetal heating system, or any type of switch of the manual return on-delay type.
  • the safety cutoff switch drive first series circuit 53 is connected to the first semi-conductor timer circuit 55 via a conductor 66, and the junction of the safety switch SS and a p gate thyristor 64 (hereinafter referred to as SCR) is connected to the start check circuit 54.
  • an air pressure switch 67 checks air supply into the furnace and is connected to a relay K2 for driving the second fuel supply source 44. Further, two monitoring switches 68 and 69 are provided to check the position of the combustion air supply control device 47, that is, the state of quantity of air supply. When the quantity of air supply is high, that is, when the damper is open, the high switch 68 is turned on, whereas when the quantity of air supply is low, that is, when the damper is closed, the low switch 69 is turned on. When the opening degree of the damper is in the intermediate position therebetween, both these high and low switches 68 and 69 remain off. These switches are connected via relay contacts Kl-12 to a trigger circuit 71 which controls an SCR 72. SCR 72 controls relay K1, and is shunted by a twin transistor 76 driven from a delay circuit including a capacitor 79 for securing a post purge period to thereby form a blower control circuit 75 for controlling the air supply blower 41.
  • the switch 67 and relay contacts Kl-12 are also connected to the first semi-conductor timer circuit 55.
  • This semi-conductor timer circuit 55 utilizes two semi-conductor switch elements 85 and 97, which is disclosed in Japanese Patent No. 972,842 Specification.
  • PUT n gate thyristor 85
  • the prepurge period termination signal or pilot ignition trial period signal is supplied from the PUT 85 via a capacitor 99 to the air supply source control circuit B, and also to ignition source control circuit C.
  • the first electronic timer circuit A further includes a transistor 95 for the self-retaining or checking relay K2 and a normally open relay contact K2-1. This transistor 95 is provided to control conduction of another transistor 62 through the contact K2-1 and control heating of the safety switch heater SS.
  • the electronics air supply source control circuit B will be considered. It will be noted that the air supply source control circuit is present also in the second electronic timer circuit described later. There are three series circuits across the power supply: a first control relay K4 for controlling the combustion air supply source and a transistor 102; a transistor 108 and its collector resistors; and the resistor chain controlling the bases of transistors 108 and 102.
  • a transistor 111 forms, with transistor 108, a latch circuit so that when the pulse signal through capacitor 99 turns transistor 111 on, transistor 108 also turns on and both transistors 108 and 111 remain on thereafter.
  • the ignition source control circuit C is energized from the safety cutoff switch drive circuit 53 and the start check circuit 54.
  • the circuit C includes relay K3, a twin transistor 124, and a second twin transistor 162.
  • the second electronic timer circuit D is energized from the collector of transistor 95 and the collector of transistor 162. Thus, if transistor 162 is turned on, power is supplied to the second timer circuit (D).
  • This second electronic timer circuit D comprises an air fuel control circuit 140 having a second control relay K6 for controlling both the combustion air supply control source 47 and second fuel supply device 44, and a second semi-conductor timer circuit 145 having a load relay K5 for controlling the first fuel supply device 43.
  • the air fuel control circuit 140 forms an air supply control circuit together with the control circuit B as previously mentioned.
  • Relay K6 is connected in series with transistor 135, and relay K5 is connected in series with a transistor 136.
  • a transistor 141 is shunted across relay K6 and transistor 135, and controls the latter transistor via a transistor 144.
  • the transistor 136 and 135 are in the form of a pair having the same function as that of the transistors 108 and 111 in the air supply source control circuit B as previously mentioned.
  • the second semi-conductor timer circuit 145 also has a circuit construction similar to that of the first semi-conductor timer circuit as previously mentioned. That is, the charging circuit for the capacitor 146 connected to the anode side of n gate thyristor (PUT) 150 is from one end of relay K6 through load relay K5. The cathode side of PUT 150 feeds line 161 via diode 154, the base of transistor 141, and the gate of p gate thyristor 157.
  • the flame detection circuit E comprises a detection circuit 166 and a signal responsive control circuit 167.
  • the detection circuit 166 may be of any well known type, such as flame rod detection, ultraviolet ray detection or CdS detection. Circuit 166 feeds a transistor 168 through a Zener diode 172, and the collector thereof is connected to the base of the transistor 95. The base of transistor 168 is connected to the safety switch drive circuit 53 through a Zener diode 169. Therefore, the potential of the connection 1 - 75*varies with the combustion sequence operation, whereby the responsive control circuit may have the following two functions. One function is that the flame response timing quickens or delays depending on the sequence period, and the other is the function of return at the time of momentary power stoppage.
  • the start switch 39 is closed. This turns on transistor 102 and hence K4. At the same time, this turns on transistor 62,energizes the trigger circuit 71 through the safety switch heater SS and air pressure switch 67, and SCR72 and relay K1 are turned on.
  • the damper control device 47 is driven open through contacts K4-12 changing over, and the blower 41 is energized through contact Kl-4 to introduce air into the furnace.
  • the relay K1 is energized after the safety switch heater SS and air pressure switch 67 (no air) have been assured to be normal, and therefore, the contacts Kl-12 and air pressure switch 67 are immediately inverted and therefore, the heater SS stops its heating but SCR72 continues conducting.
  • the low state switch 69 is turned off by the damper control 47 and the high state switch 68 waits for its turn-on.
  • the low state switch 69 is designed so that it opens later than the inversion of the air flow switch 67.
  • the damper control 47 may require a time t 1 , normally from a few seconds to a few minutes, to shift the position from low to high.
  • the transistor 124 When the high state switch 68 is on, the transistor 124 cannot be turned on because its emitter is at a relatively high voltage applied through the conductor 66 and relay K2, and after the high state switch 68 has been turned off, there is no current path and transistor 124 is still held off. Therefore, the transistor 124 awaits until the damper 37 is closed by the control 47 and the low state switch 69 is again turned on. Even during the period t 2 , the capacitor 84 continues to be discharged, butthe resistor 92 is 1 MQ to prevent rapid discharge in the period t 2 .
  • the second fuel supply source 44 provides no flame
  • the transistor 124 turns off, the relay K3 turning off, the ignition source 42 deenergizing and the transistor 95 also turning off.
  • the relay K2 is turned off because the latching circuit through transistor 95 is released and no discharge current from the PUT85 exists.
  • the transistor 62 again turns on / the safety switch heater SS begins to be heated by current flowing into SCR64, the normally closed contact SS-1 thereof is cut off after a few seconds, and the contact SS-2 is turned on to energize the alarm 46.
  • the output of the amplifier 166 in the flame detection circuit 167 assumes a low-voltage.
  • the voltage of line 175 is high, and therefore the Zener diodes 169 and 172 momentarily become conductive, and the transistor 168 also monentarily becomes conductive if a flame signal is present.
  • the flame signal is momentarily fed to the base of the transistor 95.
  • the pilot trial period T2 is terminated and the transistor 124 and relay K3 are turned off so the transistor 95 and contact K2-1 maintain their on position, the relay K2 continues to be held on and the pilot valve 44 maintains the flame to advance the production of further timing sequence.
  • the transistor 95 when the transistor 95 is turned on, the transistor 124 is turned off and the transistor 162 is turned on; that is, when the provision of pilot flame and termination of pilot trial T 2 have been assured, electric power is for the first time supplied to the second electronic timer circuit D through lines 131 and 132.
  • the capacitor 146 begins to be charged through relay K6, resistor 143, and relay K5. That is, the pilot only period or pilot stabilizing period T 3 is counted at time constact determined by the resistor 143 and capacitor 146 while checking burn-out of relays K5 and K6. But in this period T 30 the relay K6 is prevented from turning on because of the size of the resistor 143.
  • PUT150 turns on.
  • the transistor 141 is turned on, and the transistor 144 is then turned on.
  • the cathode current of PUT150 causes also the trigger circuit 155 to be energized and turns on SCR157 almost immediately.
  • the voltage at point 161 is lowered, and hence the diode 154 becomes conductive, and the charge on capacitor 146 flows as a larger current to energize the diode 154, relay K5 and SCR154, and only the relay K5 is energized. Conduction of PUT150 and turning-on of relay K5 are effected almost immediately.
  • the next main trial period T 4 commences to energize the first fuel supply source, that is, the main valve 43, and consequently the main fuel is supplied into the furnace; this fuel is fired by the pilot flame which is already alight.
  • the transistors 141 and 144 are turned off. Therefore, the transistor 135, which has been locked by the transistor 144, turns on, after which during the normal combustion, the transistors 135 and 136 are maintained on whereby the second control relay K6 is energized. That is, simultaneously with the termination of the main trial period T 41 the damper control 47 again causes the damper 37 to drive open by the relay K6 through the load drive control circuit 30, and the damper 37 is fully opened to provide a completely normal combustion operation within the furnace.
  • the present system provides a highly reliable or failsafe circuit in the form of a semi-conductor fuel control circuit which includes four start sequences, the prepurge period T 1 , pilot ignition trial period T 2 , pilot stabilizing period T 3 and main trial period T 4 for entry into normal combustion operation, and further includes a post purge period T 5 as necessary in the stop sequence.
  • the combustion operation sequence of the semi-conductor combustion control circuit incorporates therein the opening and closing operation sequence of the damper for controlling the quantity of combustion air supplied into the furnace, that is the air supply control devices 37 and 47, so that the semi-conductor air source control circuit for opening and closing the air supply control device in accordance with the signal from the semi-conductor combustion control circuit is combined into the aforementioned semi-conductor combustion control circuit, which leads to a significant characteristic of the present system.
  • the present control apparatus 50 starts only when detection is made of non-supply of air into the furnace by means of the blower 41.
  • the damper 37 Prior to commencement of the prepurge period T1, the damper 37 is fully opened to ensure that the high state interlock 68 is provided thus starting the prepurge period T 1 .
  • the damper 37 is held in high state and after the lapse of the prepurge period T 1 , the damper 37 is again placed in closed state to ensure that the low state interlock 69 is provided before entry into the pilot trial period T 2 .
  • the semi-conductor timer circuit 55 for the prepurge period T 1 effects the time counting operation only when the damper 37 is in open state and the air pressure switch 67 is monitoring the supply of air.
  • the transistor 111 is turned on to close the damper 37.
  • the switch 68 is turned off and switch 69 on, the transistors 124 and 95 and SCR64 are turned on, but the relay K2 is not pulled in due to the small discharge current of the capacitor 84, nor is the relay K3 pulled in because current is not supplied from the transistor 95 and contact K2-1. Since the transistor 64 is on, the safety switch SS actuates and the circuit is locked out by the contact SS-1.
  • the first semi-conductor timer circuit 55 is composed mainly of PUT85 and SCR64, and the failsafe property of this circuit is known per se.
  • the second semi-conductor timer circuit 145 has a construction similar to that of the first semi-conductor timer circuit 55, its failsafe property will not be further described.
  • the second control relay circuit 140 and second semi-conductor timer circuit 55 are connected in a unique manner. That is, the sequence necessary for the present control device to have the main trial period T 4 can prevent occurrence of trouble in which the damper 37 is not first placed in open state as a result of reduction in the period T 4 , or trouble whereby the time required to open the damper 37 is too long or infinite. It is so designed that if the condition under which the relay K6 cannot be pulled in occurs, the main valve or the relay
  • both relays K5 and K6 should be de-energized after the lapse of the main trial period T 4' That is, since the transistor 135 is not turned on unless the transistor 136 is turned on due to the off trouble thereof, the relay K6 is not turned on. At this time, the relay K5 cannot be self-retained, and the discharge of the capacitor 146 is terminated rapidly and the relay K5 is merely turned on momentarily, and thus the relay K5 cannot actually be pulled in. If off trouble should occur in the PUT150, the transistor 136 cannot be turned on but off by the transistor 141 simultaneously with the turn-off of PUT150 at the end of main trial T 41 thus dropping out also the relay K5.
  • the operation sequence of opening and closing the damper by way of the combustion air supply control circuit is associated in an electronic circuit manner with the combustion operation sequence by way of the failsafe combustion control circuit, and with this arrangement, it is possible to achieve all of combustion controls with extremely high reliability and failsafe property.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)
EP81301587A 1980-04-11 1981-04-10 Brennerregelungseinrichtung Withdrawn EP0038193A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP48465/80 1980-04-11
JP4846580A JPS56144334A (en) 1980-04-11 1980-04-11 Combustion control device

Publications (1)

Publication Number Publication Date
EP0038193A1 true EP0038193A1 (de) 1981-10-21

Family

ID=12804114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301587A Withdrawn EP0038193A1 (de) 1980-04-11 1981-04-10 Brennerregelungseinrichtung

Country Status (2)

Country Link
EP (1) EP0038193A1 (de)
JP (1) JPS56144334A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127177A (en) * 1982-09-04 1984-04-04 John Harvey Bradbury Control device for ultra-violet irradiation of liquids
EP0392162A2 (de) * 1989-04-13 1990-10-17 Schott Glaswerke Gaskocheinrichtung mit wenigstens einem unter Glaskeramikplatte angeordneten Gasstrahlungsbrenner sowie Verfahren zum Verringern der Aufheizzeit einer derartigen Gaskocheinrichtung
JP2015129615A (ja) * 2014-01-08 2015-07-16 アズビル株式会社 燃焼制御装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439140A (en) * 1982-03-29 1984-03-27 Honeywell Inc. Energy saving boiler purge sequence control

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808209A (en) * 1953-06-30 1957-10-01 Robert E Bressler Fuel burner control apparatus
US3960320A (en) * 1975-04-30 1976-06-01 Forney Engineering Company Combustion optimizer
US3985294A (en) * 1975-08-04 1976-10-12 Foster Wheeler Energy Corporation Furnace pressure control
US3999933A (en) * 1974-03-15 1976-12-28 Forney Engineering Company Burner control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295657A (en) * 1976-02-09 1977-08-11 Sagami Chem Res Center Furan or thiophen derivatives

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808209A (en) * 1953-06-30 1957-10-01 Robert E Bressler Fuel burner control apparatus
US3999933A (en) * 1974-03-15 1976-12-28 Forney Engineering Company Burner control system
US3960320A (en) * 1975-04-30 1976-06-01 Forney Engineering Company Combustion optimizer
US3985294A (en) * 1975-08-04 1976-10-12 Foster Wheeler Energy Corporation Furnace pressure control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Techniques Cem, No. 86, 1973, pages 36-46 Paris, FR. J. CROUZET: "Les Equipments de Controle pour Bruleurs a Gaz" * pages 44-45, paragraph: "Equipement GE 236-03" * *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127177A (en) * 1982-09-04 1984-04-04 John Harvey Bradbury Control device for ultra-violet irradiation of liquids
EP0392162A2 (de) * 1989-04-13 1990-10-17 Schott Glaswerke Gaskocheinrichtung mit wenigstens einem unter Glaskeramikplatte angeordneten Gasstrahlungsbrenner sowie Verfahren zum Verringern der Aufheizzeit einer derartigen Gaskocheinrichtung
EP0392162A3 (de) * 1989-04-13 1991-05-02 Schott Glaswerke Gaskocheinrichtung mit wenigstens einem unter Glaskeramikplatte angeordneten Gasstrahlungsbrenner sowie Verfahren zum Verringern der Aufheizzeit einer derartigen Gaskocheinrichtung
JP2015129615A (ja) * 2014-01-08 2015-07-16 アズビル株式会社 燃焼制御装置

Also Published As

Publication number Publication date
JPS56144334A (en) 1981-11-10

Similar Documents

Publication Publication Date Title
EP0385910B1 (de) Kontrollverfahren für Kraftstoffbrenner mit heisser Oberflächenzündung
US4395224A (en) Burner control system
NL8000491A (nl) Branderbesturingsstelsel.
US4137035A (en) Burner control apparatus
US3447880A (en) Control system for fluid fuel burners
EP0038193A1 (de) Brennerregelungseinrichtung
US4482312A (en) Burner control system
US4382770A (en) Safe start fuel burner control system
US4024412A (en) Burner control system with primary safety switch
US3734676A (en) Electrically energizable control system for a fuel burner
US5277575A (en) System and method for controlling the operation of a primary burner
DE2424711A1 (de) Oelbrenner-steueranordnung
EP0046280B1 (de) Brennersteuereinrichtung
GB2196500A (en) Time delay pulse circuit
GB2078398A (en) Electric control circuit for a fuel-fired burner
JPS6314246B2 (de)
JPH08147051A (ja) 電源制御装置
JPH08145355A (ja) 燃焼制御装置
JP2789961B2 (ja) 炎検出装置
CA1137193A (en) Burner control system
EP0573223A1 (de) Heizgeräte
JPS6237736B2 (de)
JPS6314245B2 (de)
JPH0115770B2 (de)
JPS6349134B2 (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB NL

17P Request for examination filed

Effective date: 19820414

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840609

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MOROHOSHI, YUKUO

Inventor name: DATE, USHIO