EP3527891A1 - Système de préchauffage pour conduites de fumées - Google Patents

Système de préchauffage pour conduites de fumées Download PDF

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Publication number
EP3527891A1
EP3527891A1 EP19152790.2A EP19152790A EP3527891A1 EP 3527891 A1 EP3527891 A1 EP 3527891A1 EP 19152790 A EP19152790 A EP 19152790A EP 3527891 A1 EP3527891 A1 EP 3527891A1
Authority
EP
European Patent Office
Prior art keywords
flue gas
exhaust system
furnace
chimney
housing
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Withdrawn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
EP19152790.2A
Other languages
German (de)
English (en)
Inventor
Rolf Wagenfeld
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.)
Kutzner and Weber GmbH
Original Assignee
Kutzner and Weber GmbH
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 Kutzner and Weber GmbH filed Critical Kutzner and Weber GmbH
Publication of EP3527891A1 publication Critical patent/EP3527891A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/13002—Initial heating of the flue before starting combustion

Definitions

  • the present invention relates to an exhaust system for a combustion furnace having a furnace housing and a combustion chamber disposed in the housing, in which a fuel is burned during operation of the combustion furnace, comprising a flue gas duct extending from the combustion chamber out of the housing and a chimney into which the Flue gas line opens and which is open at one of the mouth of the flue gas line opposite end. Further, the present invention relates to a combustion furnace equipped with such an exhaust system and a method of operating such a combustion furnace.
  • Known exhaust systems for incinerators include a flue gas conduit extending from the combustion chamber of the incinerator out of the housing of the incinerator and a chimney into which the flue gas conduit discharges and which is open at an opposite end to the flue gas conduit mouth.
  • a chimney may be shared by a plurality of individual incinerators, such that a plurality of flue-gas lines, each emanating from a single incinerator, may flow into a single chimney, for example fixedly installed in a building.
  • the combustion of fuels in the combustion chambers of known incinerators leads to a flue gas formation, wherein during combustion as an oxidant oxygen from the ambient air or by a separate air supply from outside the installation room of the furnace is drawn into the combustion chamber and resulting from the combustion Flue gas is led away from the combustion furnace through the exhaust system.
  • the flue gas line is usually arranged at the top or the back of the combustion chamber of the incinerator, so that the hot flue gases can rise in the flue gas line, thereby adjusting a draft, through which the intake of fresh air takes place automatically.
  • an exhaust system which further comprises a heating device, which is associated with the flue gas duct and / or the chimney and is operable to heat air therein.
  • the at least one heating device can be assigned to a section of the flue-gas line and / or the chimney extending essentially in the vertical direction. In this way it can be ensured that the air heated by the heater can rise directly in the region of its heating, so that the circulation in the exhaust system according to the invention can be further improved by this measure.
  • the heater could also be associated with a horizontally or obliquely extending portion thereof.
  • the exhaust system according to the invention may further comprise an operating device for starting up the heating device and / or a control device for controlling the operation of the heating device.
  • an operating device for starting up the heating device and / or a control device for controlling the operation of the heating device.
  • a user of the exhaust system or of the incinerator can manually start the heater, while by providing a control device, the operation of the heater can be controlled in a suitable manner, for example, the heat output over a time course can be regulated.
  • the exhaust system according to the invention further comprises a timing device, which is preferably integrated in the control device or operatively coupled thereto.
  • a timing device which is preferably integrated in the control device or operatively coupled thereto.
  • the timing device could, however, also merely represent a safety device which, when the heating device is switched on manually, operates only in the event that the user has not manually switched off the heating device again after a predetermined period of time, for example half an hour.
  • the exhaust system according to the invention further comprises a temperature detection unit which detects the air temperature at at least one position in the flue gas duct and / or the chimney and is preferably coupled to the control device.
  • a temperature detection unit which detects the air temperature at at least one position in the flue gas duct and / or the chimney and is preferably coupled to the control device.
  • the heating device can be electrically operated and comprise, for example, a heating coil and / or a heating ring.
  • a heating coil and / or a heating ring are not electrically powered Heating devices conceivable, for example, by a heating medium or a heat exchanger operated heaters.
  • heating coils or heating rings can be integrated particularly well in conventional flue gas lines, since they can be fitted directly into the wall of such lines.
  • the exhaust system according to the invention may further comprise an ignition device for igniting the fuel in the combustion chamber, which is preferably operatively coupled to the control device.
  • an ignition device for igniting the fuel in the combustion chamber, which is preferably operatively coupled to the control device.
  • the control device it can first be determined by the control device whether, for example, an intended temperature prevails in the flue gas duct and / or the chimney and / or whether the heating device has been operated for a predetermined time before the ignition ignites the fuel in the combustion chamber becomes.
  • operating errors can be reliably excluded and the energy consumption of the heater can be minimized.
  • the present invention relates to a combustion furnace having a furnace housing and a combustion chamber disposed in the housing, in which a fuel is burned during operation of the incinerator, and further comprising an exhaust system according to the invention.
  • This can be a variety of forms of incinerators, which can be operated in particular with different fuels. This could be, for example, ovens operated in wood or biomass pellets in private households or also gas-operated ovens in chemical plants.
  • such a furnace may comprise a flap movably associated with the furnace housing so as to provide an adjustable size orifice for inputting fuel and / or ambient air into the combustion chamber in the furnace housing.
  • the present invention relates to a method of operating such a combustion furnace, wherein the control device first operates the heating device in response to a command to start the furnace, and then, when at least one predetermined condition is detected satisfied, operates the ignition device and operates the heater stops.
  • the control device first operates the heating device in response to a command to start the furnace, and then, when at least one predetermined condition is detected satisfied, operates the ignition device and operates the heater stops.
  • the predetermined condition As examples of the predetermined condition, according to the present invention, elapse of a predetermined time or reaching of a predetermined air temperature at at least one position in the flue gas duct and / or the chimney may be selected.
  • the predetermined air temperature can be 150 ° C.
  • FIG. 1 shows a schematic view of a combustion furnace according to the invention.
  • the combustion furnace according to the invention is in FIG. 1 generally designated by the reference numeral 10 and includes a furnace housing 12, in which the combustion chamber is located, in which in the operation of the incinerator 10, a fuel is burned.
  • a furnace housing 12 in which the combustion chamber is located, in which in the operation of the incinerator 10, a fuel is burned.
  • it is in particular a wood stove, in which by a the housing 12 provided and pivotally hinged flap 16 logs can be entered into the combustion chamber.
  • a grid 16 is provided on the flap 14 through which air can flow into the combustion chamber, even if the flap 14 is closed, so that there is always sufficient oxygen available for combustion of the fuel in the combustion chamber.
  • a grid instead of a grid, however, a slider or a flap could also be used here, wherein, moreover, a plurality of such devices can also be provided, either in a bundled manner or separately for primary, secondary and tertiary air.
  • a flue gas duct 18 extends, through which the combustion gases are discharged from the combustion chamber during operation of the furnace 10.
  • the flue gas line 18 could also be led out of a rear wall of the housing 12.
  • the flue gas duct 18 in turn opens into a substantially vertical chimney 20, which is open at its top to the environment, so that there the combustion gases can be discharged.
  • the fireplace 20 is designed so that it not only from the in FIG. 1 shown flue gas line 18 can receive combustion gases, but possibly also combustion gases from other ovens, not shown.
  • FIG. 1 three heaters 22a - 22c shown, of which, however, for example, only a single can be provided in a combustion furnace according to the invention.
  • the first heater 22a is formed in the form of a flange, by means of which the flue gas duct 18 is mounted on the furnace housing 12, the second heater 22b is also associated with a flange, by means of which the flue gas duct 18 is attached to the chimney 20, and the third heater 22c is assigned to the chimney 20 at a position above the mouth of the flue gas duct 18 or on the inner side 20a of the wall the fireplace 20 attached.
  • a heating device could also be arranged below the mouth of the flue-gas line 18, as a result of which the desired draft could also be achieved.
  • the three heaters 22a-22c are each electrically operated and are thus supplied with power from the power grid, as in the case of the first and the second heater 22a and 22b indicated by sockets and lines 24 respectively. While the first and second heaters 22a and 22b are each manually turnable on and off by a user, the third heater 22c is further provided with a temperature sensor 26 also provided in the chimney 20 which provides its data to the controller 28, which in turn controls the operation of the heater 22c.
  • the first and second heaters 22a and 22b could also be connected to temperature sensors and provide their data to separate or common control devices.
  • the temperature of the air in the chimney 20 is detected by the temperature sensor 26 and passed on to the control device 28.
  • a predetermined temperature value for example 150 ° C.
  • the control device 28 stops the operation of the heating device 22 c, since at this temperature it is assumed that the desired gas circulation has started in the furnace 10 according to the invention is, so that now the fuel in the combustion chamber 12 of the furnace 10 can be ignited.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
EP19152790.2A 2018-02-16 2019-01-21 Système de préchauffage pour conduites de fumées Withdrawn EP3527891A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018202404.9A DE102018202404A1 (de) 2018-02-16 2018-02-16 Vorwärmsystem für Rauchgasleitungen

Publications (1)

Publication Number Publication Date
EP3527891A1 true EP3527891A1 (fr) 2019-08-21

Family

ID=65199315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19152790.2A Withdrawn EP3527891A1 (fr) 2018-02-16 2019-01-21 Système de préchauffage pour conduites de fumées

Country Status (2)

Country Link
EP (1) EP3527891A1 (fr)
DE (1) DE102018202404A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196313B (de) * 1964-03-07 1965-07-08 Walther & Cie Ag Einrichtung zum Schutze des Austrittsendes von Doppelrohr-Blechkaminen gegen Saeurekorrosion
GB1524525A (en) * 1974-12-02 1978-09-13 British Gas Corp Suppressing plume formation of boiler exhausts
GB1604637A (en) * 1978-05-30 1981-12-09 Hynd Site Services Ltd J B Flue gas ducting

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1526162A1 (de) * 1965-08-14 1970-03-05 Babcock & Wilcox Ag Verfahren und Einrichtung zur Verhinderung feuchter Belaege in einem Dampferzeuger nachgeschalteten Anlageteilen
AT397714B (de) * 1988-07-25 1994-06-27 Vaillant Gmbh Brennerbeheiztes gerät
DE19824204A1 (de) * 1998-05-29 1999-12-09 Siemens Ag Hausfeuerungsanlage
DE102015015311A1 (de) * 2015-11-26 2017-06-01 Linde Aktiengesellschaft Einrichtung und Verfahren zum Verteilen eines insbesondere CO2-reichen Abgases, insbesondere eines Abgases einer Sauergasentfernungseinheit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196313B (de) * 1964-03-07 1965-07-08 Walther & Cie Ag Einrichtung zum Schutze des Austrittsendes von Doppelrohr-Blechkaminen gegen Saeurekorrosion
GB1524525A (en) * 1974-12-02 1978-09-13 British Gas Corp Suppressing plume formation of boiler exhausts
GB1604637A (en) * 1978-05-30 1981-12-09 Hynd Site Services Ltd J B Flue gas ducting

Also Published As

Publication number Publication date
DE102018202404A1 (de) 2019-08-22

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