EP0614048A1 - Dispositif avec un automate à brûleur - Google Patents

Dispositif avec un automate à brûleur Download PDF

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Publication number
EP0614048A1
EP0614048A1 EP93114751A EP93114751A EP0614048A1 EP 0614048 A1 EP0614048 A1 EP 0614048A1 EP 93114751 A EP93114751 A EP 93114751A EP 93114751 A EP93114751 A EP 93114751A EP 0614048 A1 EP0614048 A1 EP 0614048A1
Authority
EP
European Patent Office
Prior art keywords
fuel pump
drive
burner
speed
blower
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Withdrawn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
EP93114751A
Other languages
German (de)
English (en)
Inventor
Eckhard Dipl.-Ing. Schwendemann (Fh)
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.)
Electrowatt Technology Innovation AG
Original Assignee
Landis and Gyr Technology Innovation AG
Landis and Gyr Bussiness Support AG
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 Landis and Gyr Technology Innovation AG, Landis and Gyr Bussiness Support AG filed Critical Landis and Gyr Technology Innovation AG
Publication of EP0614048A1 publication Critical patent/EP0614048A1/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Withdrawn legal-status Critical Current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
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/187—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electrical or electromechanical 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
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • 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
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • 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
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F23N2005/182—Air flow switch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/04—Memory
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • 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
    • F23N2233/08—Ventilators at the air intake with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/30—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/26—Details

Definitions

  • the invention relates to a device with an automatic burner control according to the preamble of claim 1.
  • Such devices are suitable, for example, for controlling the combustion in small to medium-sized heat generation systems which are operated with liquid fuels.
  • Burner controls used in such devices are known, for example, from the Landis & Gyr company publication "Burner controls for oil and gas burners", L ... With the help of such a burner control, the air blower, fuel pump (e.g. oil pump), fuel valve and ignition device are controlled. This means that both the commissioning process for a burner can be controlled and monitored, and the operation following such a commissioning process.
  • fuel pump e.g. oil pump
  • an approximately constant air flow is generated with the aid of the air blower, which is influenced with the aid of an upstream or downstream air flap so that the desired air flow to the burner is produced.
  • the fuel flow is generated by means of a fuel pump operated at a constant delivery rate, the amount of fuel actually conveyed and required for combustion being influenced, for example, by a backflow throttle.
  • the invention has for its object to improve the known devices so that the energy requirement is minimized and at the same time the effort for the units serving to influence the flow rate is reduced, while at the same time the finely tuned controllability of the fuel and air flow must be guaranteed.
  • the only figure shows a scheme of the device with one Automatic burner controls 1 according to the invention, to which a blower drive 2 of a blower 3 and a fuel pump drive 4 of a fuel pump 5 are connected.
  • the fan drive 2 is connected via a first interface 6 to the automatic burner control unit 1, this interface 6 in turn consisting of an operating voltage connection 6b, a control connection 6s and a feedback connection 6r.
  • the fuel pump drive 4 is connected to the automatic firing device 1 via a second interface 7, which consists of an operating voltage connection 7b, a control connection 7s and a feedback connection 7r.
  • the fan drive 2 is, according to the invention, a speed-controllable motor, for example a DC motor.
  • the drive energy is made available to him via the operating voltage connection 6b.
  • the speed control takes place via the control connection 6s.
  • the speed control is advantageously carried out by pulse width modulation.
  • the corresponding control electronics are part of the motor to be considered as a unit.
  • the feedback of the speed takes place via the feedback connection 6r.
  • the feedback signal advantageously provides a Hall probe, which, together with its signal conditioning circuit, is also part of the motor representing a structural unit. Such units are commercially available. It is essential that the feedback signal is a sequence of pulses of constant length and constant amplitude proportional to the speed of the motor, so that the length of the pause between the individual pulses is speed-dependent.
  • the fuel pump drive 4 is also a speed-controllable motor which can be controlled analogously to the blower drive 2 and whose feedback is also designed accordingly.
  • the fan drive 2 and fuel pump drive 4 can be, for example, EBM motors of the type M3G055-BD03-XA, VDB (32-38 V) DC, but are of course not restricted to this.
  • EBM motors of the type M3G055-BD03-XA, VDB (32-38 V) DC, but are of course not restricted to this.
  • the use of the same motor for both drives has advantages in terms of storage, spare parts availability and price.
  • the burner control unit 1 also has connection points for a fuel preheater 8, for a fuel valve 9, for an ignition device 10 and for a flame monitoring device 11. In addition, it has a connection 12 for the operating voltage, usually for 230 V / 50 Hz and / or 110 V / 60 Hz.
  • Such a burner control unit 1 is generally controlled by a heating controller.
  • a control input 13 which advantageously consists of three individual input points: a first input point 13.1 for a general switch-on command, a second input point 13.2 for a command to switch on a possibly existing second burner stage and a third input point 13.m for a power request signal in the case of a modulating burner. If the control input 13 consists of these three input points, the automatic burner control unit 1 can be used universally for all burner types "one-stage", "two-stage” and "modulating". This is useful in view of a low-volume series production, through which the manufacturing costs can be reduced.
  • the burner control unit 1 automatically detects which of the input points are wired before starting up as part of a self-test. He can then configure himself or with a given configuration automatically recognize whether the control paths are still operational.
  • a safety temperature limiter 14 Connectable to the automatic firing device 1 is also a safety temperature limiter 14, the contact of which must be included in the safety chain of the automatic firing device 1 in order to prevent the burner from being switched on under all circumstances, although the heat generator must be switched off due to overheating.
  • the burner control unit 1 contains a power supply unit 15 which is connected to the connection 12 and which generates all the voltages required.
  • the power supply unit 15 supplies the operating voltage to the operating voltage connections 6b and 7b, moreover via a fuel preheater relay 16 to the fuel preheater 8 and via said safety temperature limiter 14 and a protective relay 17 on the one hand via a fuel valve relay 18 to the fuel valve 9 and on the other hand via an ignition relay 19 to the Ignition device 10.
  • the four relays 16, 17, 18 and 19 are controlled by a programmer 20, which is indicated by dotted lines.
  • the programmer 20 is, for example, a microprocessor with associated peripheral interfaces and components.
  • the programmer 20 also has an input which is connected to a flame amplifier 21 which amplifies the signal from the flame monitoring device 11 and forms it into a signal which is compatible with the programmer 20.
  • Outputs of the program generator 20 are connected to the two control connections 6s and 7s.
  • the programmer 20 is also connected according to the invention to a setpoint data memory 22, in which setpoints for the speeds of the blower drive 2 and the fuel pump drive 4 are created.
  • Setpoint data store 22 and actual data store 23 are connected to a comparator 24, which in turn reports the results of comparison operations to programmer 20, for which purpose a corresponding connection is present.
  • the "OFF" state is assumed as the initial state.
  • the higher-level heating controller not shown in the figure, does not require any heat, so that the burner is switched off.
  • the burner control unit 1 is in the “standby” state, in which the fuel preheater 8 and the ignition device 10 are switched off, the blower drive 2 and the fuel pump drive 4 are at a standstill and the flame monitor 11 reports no flame.
  • a signal appears at the entry point 13.m indicating the size of the heat demand.
  • This signal can be, for example, a standardized voltage in the range from 0 to 10 V, 10 V meaning 100% power requirement (based on the nominal power of the burner), but alternatively also advantageously a digital signal.
  • This signal reaches the programmer 20, in the case of a microprocessor as programmer 20 and an analog input signal via an analog-digital converter, not shown. With this signal, the programmer 20 starts the start-up procedure that is usual in automatic firing systems 1. For this commissioning process, the programmer 20 fetches a value for the speed of the blower drive 2 from the target data memory 22. The blower drive 2 is controlled accordingly by the programmer 20 via the control connection 6s.
  • the blower 3 should then start up and reach the target speed after a certain ramp-up time.
  • An initially increasing signal for the speed appears at the feedback connection 6r, which reaches a certain value after the ramp-up time has elapsed.
  • This signal passes from the feedback connection 6r to the actual data memory 23 and is stored there.
  • the comparator 24 now compares the values of the target data memory 22 and the actual data memory 23 and reports the result to the programmer 20. It should be mentioned here that each Depending on the design of the programmer 20 used, certain variants in the structure of the burner control unit 1 are possible. If the program generator 20 is a microprocessor, the comparator 24 can also be a program sequence that the microprocessor processes.
  • an air pressure switch can also be installed. By running the blower 3, an increased air pressure is generated, to which this air pressure switch responds. The response of the air pressure switch is communicated to the programmer 20. If the air pressure switch does not respond, the continuation of the program sequence is stopped. This measure ensures that the burner cannot go into operation if the fan drive 2 runs correctly, but the required air mass flow is not promoted by any circumstances.
  • the ignition device 10 is then switched on by the programmer 20 in that the ignition relay 19 is activated.
  • the fact that the ignition device 10 actually receives voltage has the prerequisite that the current path via the safety temperature limiter 14 and the protective relay 17 is closed.
  • the programmer 20 also fetches from the target data memory 22 a target value for the speed of the fuel pump drive 4 belonging to the target value for the speed of the fan drive 2.
  • the fuel pump drive 4 is controlled and monitored analogously to the fan drive 2.
  • the programmer 20 then controls the fuel valve relay 18, thereby releasing the flow of fuel so that the fuel-air mixture in the burner can now ignite.
  • the programmer 20 then reads the value for the heat demand at the input point 13.m, and the setpoint values for the speed of the blower drive 2 corresponding to this power value from the setpoint data memory 22 and fuel pump drive 4 fetched and the motors regulated accordingly.
  • the entry point 13.m is queried cyclically by the programmer 20. Every change in the heat requirement leads to a corresponding change in the setpoints for the speeds of fan drive 2 and fuel pump drive 4.
  • the setpoint data memory contains triples of values: burner output, speed fan drive 2, speed fuel pump drive 4. With continuous control (modulating), the Setpoint memory has a corresponding number of triples, eg 128. With two-stage burners, the setpoint memory only needs to hold 3 triples (start, 1st stage, 2nd stage), with single-stage burners only 2 (start, operation).
  • Generators for the control signals for fan drive 2 and fuel pump drive 4 are not shown in the figure. These generators can, for example, generate pulse-width-modulated or frequency-variant control signals. In the case of a microprocessor-controlled burner control unit 1, these generators are not separate components, but the microprocessor acting as programmer 20 directly generates the corresponding signals.
  • the device according to the invention has the advantage over the prior art that the expenditure of energy and components for generating the required flow rates are lower. Since the relationship between the speed of the fan drive 2 and the speed of the fuel pump drive 4 is determined by stored values that can be freely selected, the optimum excess air can be set for each operating point without special measures. This is particularly advantageous because, in the prior art, in which the blower 3 and the fuel pump 5 are driven by a common shaft from the same motor, the fan wheel of the blower 3 must be matched very carefully to the fuel pump 5 used.
  • the invention makes it possible to realize particularly small designs because the blower 3 and the fuel pump 5 can each be optimized individually.
  • An actuator for fine-tuning the air volume for example an air flap
  • An actuator for fine-tuning the air volume for example an air flap
  • the variants of the burner control unit 1 for single-stage, two-stage and modulating burners differ only in the size of the target data memory. As a result, large quantities and thus low manufacturing costs can be achieved.
  • the use of regulated DC motors as drives for blower 3 and fuel pump 5 has advantages in terms of robustness and size.
  • the use of DC motors with a nominal voltage of 35 V has additional advantages in terms of safety, eg protection against contact.
  • the program of the program generator 20 can advantageously be designed such that when the heat requirement is increased, the speed of the fan drive 2 is increased first and the speed of the fuel pump drive 4 is only increased after a delay. Conversely, if the heat requirement is reduced, the speed of the fuel pump drive 4 can first be reduced and the speed of the blower drive 2 can be reduced with a time delay. As a result, air surplus is briefly ensured during load changes, so that a lack of air with the resulting unfavorable emission values is reliably avoided.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP93114751A 1993-03-05 1993-09-14 Dispositif avec un automate à brûleur Withdrawn EP0614048A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH66693 1993-03-05
CH666/93 1993-03-05

Publications (1)

Publication Number Publication Date
EP0614048A1 true EP0614048A1 (fr) 1994-09-07

Family

ID=4192312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114751A Withdrawn EP0614048A1 (fr) 1993-03-05 1993-09-14 Dispositif avec un automate à brûleur

Country Status (3)

Country Link
EP (1) EP0614048A1 (fr)
JP (1) JPH0749118A (fr)
KR (1) KR940021996A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890790A1 (fr) 1997-07-08 1999-01-13 Electrowatt Technology Innovation AG Dispositif de commande, notamment un automate à brûleur, pour un brûleur à air soufflé
EP1006316A1 (fr) * 1998-11-30 2000-06-07 Hamworthy Combustion Engineering Limited Systèmes de brûleurs à mazout
DE10030630A1 (de) * 2000-06-28 2002-01-10 Siemens Building Tech Ag Verfahren zur Drehzahlüberwachung eines Gebläses
DE4410735B4 (de) * 1994-03-14 2005-03-31 Landis & Gyr Business Support Ag Einrichtung mit einem Feuerungsautomaten
DE102005013546A1 (de) * 2005-03-23 2006-09-28 Honeywell Technologies Sarl Verfahren zur Überwachung eines Verbrennungsvorganges eines Brenners
AT506228B1 (de) * 2008-03-25 2009-07-15 Vaillant Austria Gmbh Verfahren zum betreiben eines heizgeräts
CN109519362A (zh) * 2018-11-14 2019-03-26 珠海格力电器股份有限公司 电机设备的控制方法、装置、控制器和存储介质

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030068818A (ko) * 2002-02-18 2003-08-25 엘지전자 주식회사 라디안트 버너의 모터제어방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124330A1 (fr) * 1983-04-21 1984-11-07 Autoflame Engineering Limited Systèmes de commande pour brûleurs à carburant
JPS62276328A (ja) * 1986-02-22 1987-12-01 Rinnai Corp 燃焼制御装置
JPS6375416A (ja) * 1986-09-18 1988-04-05 Matsushita Electric Ind Co Ltd 燃焼制御装置
DE4007699A1 (de) * 1990-03-10 1991-09-12 Hella Kg Hueck & Co Mit brennstoff gespeiste zusatz-heizeinrichtung fuer kraftfahrzeuge
GB2248701A (en) * 1990-08-07 1992-04-15 Samsung Electronics Co Ltd Burner control system and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124330A1 (fr) * 1983-04-21 1984-11-07 Autoflame Engineering Limited Systèmes de commande pour brûleurs à carburant
JPS62276328A (ja) * 1986-02-22 1987-12-01 Rinnai Corp 燃焼制御装置
JPS6375416A (ja) * 1986-09-18 1988-04-05 Matsushita Electric Ind Co Ltd 燃焼制御装置
DE4007699A1 (de) * 1990-03-10 1991-09-12 Hella Kg Hueck & Co Mit brennstoff gespeiste zusatz-heizeinrichtung fuer kraftfahrzeuge
GB2248701A (en) * 1990-08-07 1992-04-15 Samsung Electronics Co Ltd Burner control system and method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 157 (M - 696) 13 May 1988 (1988-05-13) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 302 (M - 732) 17 August 1988 (1988-08-17) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410735B4 (de) * 1994-03-14 2005-03-31 Landis & Gyr Business Support Ag Einrichtung mit einem Feuerungsautomaten
EP0890790A1 (fr) 1997-07-08 1999-01-13 Electrowatt Technology Innovation AG Dispositif de commande, notamment un automate à brûleur, pour un brûleur à air soufflé
EP1006316A1 (fr) * 1998-11-30 2000-06-07 Hamworthy Combustion Engineering Limited Systèmes de brûleurs à mazout
DE10030630A1 (de) * 2000-06-28 2002-01-10 Siemens Building Tech Ag Verfahren zur Drehzahlüberwachung eines Gebläses
DE102005013546A1 (de) * 2005-03-23 2006-09-28 Honeywell Technologies Sarl Verfahren zur Überwachung eines Verbrennungsvorganges eines Brenners
AT506228B1 (de) * 2008-03-25 2009-07-15 Vaillant Austria Gmbh Verfahren zum betreiben eines heizgeräts
EP2105668A2 (fr) 2008-03-25 2009-09-30 Vaillant GmbH Procédé destiné au fonctionnement d'un appareil de chauffage
DE102009014256A1 (de) 2008-03-25 2009-10-01 Vaillant Gmbh Verfahren zum Betreiben eines Heizgerätes
CN109519362A (zh) * 2018-11-14 2019-03-26 珠海格力电器股份有限公司 电机设备的控制方法、装置、控制器和存储介质
CN109519362B (zh) * 2018-11-14 2019-10-29 珠海格力电器股份有限公司 电机设备的控制方法、装置、控制器和存储介质

Also Published As

Publication number Publication date
JPH0749118A (ja) 1995-02-21
KR940021996A (ko) 1994-10-19

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