EP0343660A2 - Dispositif de régulation de la puissance thermique d'une chaudière combustible solide - Google Patents

Dispositif de régulation de la puissance thermique d'une chaudière combustible solide Download PDF

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Publication number
EP0343660A2
EP0343660A2 EP89109433A EP89109433A EP0343660A2 EP 0343660 A2 EP0343660 A2 EP 0343660A2 EP 89109433 A EP89109433 A EP 89109433A EP 89109433 A EP89109433 A EP 89109433A EP 0343660 A2 EP0343660 A2 EP 0343660A2
Authority
EP
European Patent Office
Prior art keywords
boiler
temperature
supply air
control device
fan
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Withdrawn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
EP89109433A
Other languages
German (de)
English (en)
Other versions
EP0343660A3 (fr
Inventor
Anton Schlereth
Burkard Dipl.-Ing. Schürger (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.)
STAHL-UND APPARATEBAU JOSEF SCHUSTER
Original Assignee
STAHL-UND APPARATEBAU JOSEF SCHUSTER
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 STAHL-UND APPARATEBAU JOSEF SCHUSTER filed Critical STAHL-UND APPARATEBAU JOSEF SCHUSTER
Publication of EP0343660A2 publication Critical patent/EP0343660A2/fr
Publication of EP0343660A3 publication Critical patent/EP0343660A3/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Withdrawn legal-status Critical Current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
    • 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
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/10—Measuring temperature stack temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/12—Measuring temperature room temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/13—Measuring temperature outdoor temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/18—Measuring temperature feedwater temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/19—Measuring temperature outlet temperature water heat-exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • 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
    • F23N2239/00—Fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2239/00—Fuels
    • F23N2239/02—Solid fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/06—Space-heating and heating water

Definitions

  • the invention relates to a device for regulating the heat output of a solid fuel boiler by temperature-dependent regulation of the amount of air supplied to the boiler by a supply air blower.
  • the invention has for its object to provide a device which allows the good, in particular environmentally friendly, combustion values already achieved in the nominal load operation to be transferred to the low-load phase and in particular to counter the highly undesirable pollutant emissions in the event of a reduction in performance.
  • the supply air blower is connected to a control device which ensures only a very slow change in the supply air quantity supplied to the boiler.
  • the control device is designed such that after reaching a predetermined temperature of the boiler
  • the time constant can, for example, be in the order of 5 to 30 minutes.
  • the device according to the invention works particularly environmentally friendly, while at the same time maintaining a high degree of efficiency and utilization.
  • the control device provided preferably determines the speed of the supply air blower, although it is also possible in principle to let the control device act on a mechanical air control device for influencing the amount of air introduced into the boiler.
  • the boiler temperature, the heating circuit flow temperature, the boiler return temperature, the flue gas temperature and the outside temperature can be taken into account as influencing factors for the control of the air volume supplied to the boiler individually, in combination or in any combination of parts.
  • a safety temperature limiter and / or a door contact switch by means of which the fan is switched off when a predetermined maximum temperature is exceeded or the filling shaft degassing or the boiler door is opened, are expediently located in series with a fan motor which drives the supply air fan.
  • Additional modules can be connected to the control device, in particular one or more motor mixers assigned to the heating circuit and / or one or more additional buffer stores connected to the heating circuit, which are logically loaded or unloaded via a motor mixer.
  • a solid fuel boiler is designated by 10 in total.
  • the boiler 10 has a fuel filling chamber 11, into which solid fuel, in particular lumber, can be introduced after opening a filling door 12.
  • a supply air blower 13 is mounted on the filling door 12. Supply air can be blown into the fuel filling chamber 11 by means of the fan 13.
  • the flow connection 14 is connected via a line 17 to the inlet of any heat exchanger 18, the outlet of which via lines 19 and 20 the return port 16 is connected. It goes without saying that a plurality of such heat exchangers can also be provided instead of one heat exchanger.
  • a heating or circulation pump 21 is located in line 17.
  • a service water tank 24 is also connected to the flow and return connections 14 and 16 via lines 22, 23 and lines 17, 20.
  • a storage tank charging pump 25 is located in line 23.
  • a control device provided with a display or display field 26 is illustrated at 27 in FIG. 1.
  • Inputs of the control unit 27 are via a line 28 to a flow sensor 29 determining the flow temperature (FIG. 2), via a line 30 to a boiler return sensor 31 determining the return temperature, via a line 32 to a boiler sensor 33 monitoring the boiler temperature, via a line 34 to an exhaust gas sensor 35 which determines the exhaust gas temperature, via a line 36 to a room sensor 37 which determines the room temperature and via a line 38 to an external sensor 39 which monitors the outside temperature.
  • Outputs of the control device 27 are connected via a line 40 to the supply air blower 13, via a line 41 to the heating pump 21 and via a line 42 to the storage tank charging pump 25.
  • a line 43 connects the control unit 27 to a remote or home display 44.
  • the control unit 27 is connected to the boiler 10 via a remote ignition or start line 45.
  • the heating system including the control device 27 is supplied with power from mains lines L and N (FIG. 2) via a mains switch S1 and a mains input fuse F1. If the mains switch S1 is in the OFF position, a burner which may be connected to an OIL / GAS output is permanently enabled, since this output is connected to a normally closed contact 46. In this way, the burner of a possibly connected oil / gas boiler can be operated. In the OFF position of the power switch S1, the power supply for the control device 27 and all consumers connected to this device are switched off. In the ON position of the power switch S1, the control device 27 is switched on.
  • an operating mode selector switch S2 two operating modes, namely manual mode and automatic mode, can be selected.
  • the control device 27 processes the measured values of the connected sensors, and it controls the speed of the supply air fan 13 as a function of these measured values. If the selector switch S2 is set to the "manual" position, the supply air fan 13 runs at maximum speed. The burner is constantly blocked.
  • a boiler temperature monitor 47 in manual mode which is permanently set to a predetermined boiler temperature and switches off the blower 13 when this temperature is exceeded.
  • a safety temperature limiter 48 and a door contact switch 49 in series with the blower motor.
  • the fan is always switched off via the safety temperature limiter 48 as soon as a predetermined maximum temperature (e.g. 110 ° C) is exceeded.
  • the door contact switch 49 ensures that the fan 13 is switched off automatically when the filling shaft vent or the filling door 12 of the boiler 10 is opened.
  • the setpoint of the boiler temperature is expediently determined from the outside temperature and the slope.
  • the slope can in turn preferably be set on the control device 27.
  • the return sensor 31 is optional, however; if there is no return sensor, the return temperature is disregarded.
  • the start process of the boiler control is triggered by actuating a start button 50.
  • a predetermined limit value minimum boiler limit
  • the supply air blower 13 is made to run at the maximum speed for a period of time determined by a timer. If the minimum boiler temperature is not exceeded during this period, the fan 13 is switched off. If, on the other hand, the minimum boiler limit is exceeded during the start time period predetermined by the timer, normal control mode begins.
  • the heating pump 21 is switched on as soon as the boiler temperature exceeds a minimum temperature. If the boiler temperature drops again, pumps 21 and 25 are switched off.
  • the fan speed is expediently determined by the deviation between the setpoint and the actual value of the boiler temperature. If the actual value of the boiler temperature is below the target value by at least a predetermined difference, the fan 13 runs at maximum speed. If the actual boiler temperature rises and the deviation between the setpoint and actual value is smaller than the predetermined difference, the fan speed is reduced until the fan 13 is stopped after reaching the setpoint temperature. The speed is only slow, i.e. with high time constant, changed.
  • the maximum limitation of the boiler temperature should react in a damped manner, such that the fan speed is throttled from a certain boiler temperature until the fan 13 comes to a standstill at a maximum temperature. If the latter is not possible in individual cases, the maximum limitation must be provided with a hysteresis of a few ° C.
  • the exhaust gas temperature preferably also affects the speed of the fan 13. If a specified exhaust gas temperature limit is exceeded, the blower speed is reduced reduced with a time delay. On the other hand, if the exhaust gas temperature falls below a predetermined minimum exhaust gas temperature limit, the fan speed is increased with a time delay.
  • the timer mentioned above is started again. If the minimum boiler temperature falls below, the apartment display 44 is expediently put into operation.
  • the feed line 17 and the return line 19 are connected to a motor mixer 51.
  • the control device 27 can expediently be designed for weather-dependent flow temperature control and control the mixer 51 to regulate the flow temperature.
  • the outside temperature is taken over by the outside sensor 39 which is present anyway.
  • the room sensor 37 or a remote control can be connected optionally.
  • the controller output line for driving the motor mixer 51 is shown at 52.
  • 59 is a flow sensor.
  • an additional buffer store 53 is located after the boiler 10, as is known per se from DE-OS 36 24 864.
  • a circulation pump 54 and a motor mixer 55 are assigned to the buffer store 53.
  • the circulation pump 54 is located in the return line 20.
  • the motor mixer 55 is connected to this return line 20 and a connecting line 56 between a lower connecting line 57 and an upper connecting line 58.
  • the motor mixer 55 is expediently controlled by the control device 27 as a function of the difference between the boiler temperature and the boiler return temperature.
  • both the mixer 51 according to FIG. 3 and the mixer 55 according to FIG. 4 are present. Both mixers are advantageously controlled by the control unit 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
EP19890109433 1988-05-24 1989-05-24 Dispositif de régulation de la puissance thermique d'une chaudière combustible solide Withdrawn EP0343660A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3817598 1988-05-24
DE3817598A DE3817598A1 (de) 1988-05-24 1988-05-24 Vorrichtung zum regeln der verbrennungsleistung eines feststoffheizkessels

Publications (2)

Publication Number Publication Date
EP0343660A2 true EP0343660A2 (fr) 1989-11-29
EP0343660A3 EP0343660A3 (fr) 1990-09-26

Family

ID=6355003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890109433 Withdrawn EP0343660A3 (fr) 1988-05-24 1989-05-24 Dispositif de régulation de la puissance thermique d'une chaudière combustible solide

Country Status (2)

Country Link
EP (1) EP0343660A3 (fr)
DE (1) DE3817598A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624756A1 (fr) * 1993-05-14 1994-11-17 Haiko Paul Künzel Procédé pour commander une installation de chauffage équipée avec une chaudière à combustible solide
FR2976051A1 (fr) * 2011-05-30 2012-12-07 Electricite De France Dispositif de pilotage d'un poele a granules

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408801C2 (de) * 1993-03-16 2002-10-17 Ulrich Dreizler Gasgebläsebrenner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1891100A (en) * 1929-10-30 1932-12-13 Frank X Lauterbur Furnace and furnace draft control
CH192531A (de) * 1937-01-14 1937-08-31 Willi Alois Feuerreguliereinrichtung an Zentralheizungskesseln für Kohlenfeuerung.
US2285226A (en) * 1941-04-29 1942-06-02 Gen Electric Fluid flow control
DK145685C (da) * 1976-04-26 1983-08-08 Lars Leksander Slyn Joergensen Fremgangsmaade og apparat til regulering af forbraendingen i et fyr
LU79664A1 (de) * 1978-05-16 1979-12-06 M Olieman Verfahren und vorrichtung zur regelung von kesselfeuerungsanlagen
DE3025966C2 (de) * 1980-07-09 1983-11-24 Buderus Ag, 6330 Wetzlar Selbsttätige Regelung eines Saugzugventilators und einer Frischluftklappe an Heizkesseln zur Verfeuerung fester Brennstoffe
DE3106015C2 (de) * 1981-02-18 1985-08-01 "HDG" Entwicklungs- und Patentverwertungsgesellschaft mbH, Wald, Steiermark Verfahren zum Betreiben eines Heizkessel, der mit Festbrennstoff und mit Öl oder Gas beheizbar ist und Vorrichtung zur Durchführung des Verfahrens
AT399767B (de) * 1985-02-07 1995-07-25 Basten Gert Einrichtung zur eliminierung von atmosphärischen beeinflussungen auf das zugverhalten eines schornsteines
KR910002740B1 (ko) * 1986-02-22 1991-05-03 린나이 가부시기가이샤 연소제어장치
CH673699A5 (en) * 1986-09-12 1990-03-30 Tiba Kochherd & App Ag Combustion air regulation system for solid fuel boiler - with separate regulation of total quantity of air and primary secondary air ratio

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624756A1 (fr) * 1993-05-14 1994-11-17 Haiko Paul Künzel Procédé pour commander une installation de chauffage équipée avec une chaudière à combustible solide
FR2976051A1 (fr) * 2011-05-30 2012-12-07 Electricite De France Dispositif de pilotage d'un poele a granules

Also Published As

Publication number Publication date
EP0343660A3 (fr) 1990-09-26
DE3817598A1 (de) 1989-11-30

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