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WO2023121479A1 - Ensemble de commande de cheminée permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant et procédé permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant - Google Patents

Ensemble de commande de cheminée permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant et procédé permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant Download PDF

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Publication number
WO2023121479A1
WO2023121479A1 PCT/NO2022/050326 NO2022050326W WO2023121479A1 WO 2023121479 A1 WO2023121479 A1 WO 2023121479A1 NO 2022050326 W NO2022050326 W NO 2022050326W WO 2023121479 A1 WO2023121479 A1 WO 2023121479A1
Authority
WO
WIPO (PCT)
Prior art keywords
chimney
heating device
fuel burning
burning heating
pressure
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.)
Ceased
Application number
PCT/NO2022/050326
Other languages
English (en)
Inventor
Thor KIELLAND
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.)
Pipeeksperten AS
Original Assignee
Pipeeksperten AS
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 Pipeeksperten AS filed Critical Pipeeksperten AS
Priority to EP22912072.0A priority Critical patent/EP4453475A4/fr
Publication of WO2023121479A1 publication Critical patent/WO2023121479A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F23N3/00—Regulating air supply or draught
    • F23N3/002—Regulating air supply or draught 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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L11/00—Arrangements of valves or dampers after the fire
    • F23L11/02—Arrangements of valves or dampers after the fire for reducing draught by admission of air to flues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • 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
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—Closed stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2211/00—Flue gas duct systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/02—Ventilators in stacks
    • F23N2233/04—Ventilators in stacks with variable speed

Definitions

  • the present disclosure relates to a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney and a method for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney. More specifically, the disclosure relates to a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney and a method for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney as defined in the introductory parts of claim 1 and claim 16.
  • a problem with the solutions of the prior art is that a chimney fan is arranged to increase the draft continuously or at startup of a furnace in a heating device, and since there are a variety of heating devices, of chimneys and of fan products, and the fact that a furnace not necessarily produce best output in relation to heating efficiency and pollution at a maximum draft output delivered by an installed fan. Specifically problematic is this when it comes to particle emissions. It is a problem to provide for optimal heating efficiency and the least amount of pollution/particles to be emitted. Even if there is a timer installed on the fan, it is a problem to find an optimal relationship between particle emission, draft and heat at any time, and the problem increases when installing heating devices and connect those to old chimneys of unknown dimension and status.
  • Maintaining optimal draft in a heated chimney is also a challenge, and when inhabitants continuously alter the content of the fuel in the furnace it is a problem to optimize the settings of the fan.
  • a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney, comprising: a fuel burning heating devices comprising a combustion air inlet, a chimney comprising a hollow interior, wherein the fuel burning heating device having an exhaust gas outlet connected to the interior of the chimney via an exhaust inlet arranged in the lower portion of the chimney, and the assembly further comprising: two or more sensors, a top mounted fan, and a controller, wherein the controller comprise: a set of parameters reflecting the specified pressure requirements of the fuel burning heating device, input connected to, for reading, the one or more sensors, and output connected to, for controlling, the top mounted fan such that the pressure requirements of the fuel burning heating device 1 can be achieved.
  • Using two or more sensors to provide input data for the controller enables a variety of data to be considered for controlling the fan and draft, the fan being mounted at, close to, or in the upper portion of the chimney, or at least above the uppermost exhaust inlet from a heating device.
  • the goal is to provide a device and method that will optimize the draft according to the vendors pressure requirements of the individual fuel burning heating device independent on fan vendor or chimney type, size or status.
  • the two or more sensors comprise at least one thermocouple sensor at the outlet of exhaust gases from the one or more heating devices.
  • a furnace burns at different temperatures, and each burning material has different ideal burning temperature at which the pollution/particle emission is lowest.
  • adding a temperature sensor close to the furnace will enable the controller to adjust fan to optimize the negative pressure in the chimney and the burning sequence continuously, and thus optimize the temperature of the exhaust gases.
  • Each fireplace will have individual emission profiles related to negative pressure, temperature and material to be used for fuel.
  • the two or more sensors comprise at least one pressure sensor for measuring the pressure in the chimney.
  • the temperature is an indication on how clean the individual furnace may burn, and when a fan is operating at the top of the chimney the negative pressure inside the chimney may indicate the volume of air that may be drawn through the furnace in the burning process.
  • the sensors enables the controller to optimize the action of the fan, and adjusting the negative pressure inside the chimney and furnace temperature in accordance with a preset burning phase setting and the fireplace vendor parameter settings.
  • each of the fuel burning heating devices may comprise a furnace door for accessing and feeding a furnace inside the heating device, and a furnace door opening sensor for detection of the furnace door open/close status.
  • each of the fuel burning heating devices may comprise a combustion air inlet which may comprise a sensor for detection of the furnace combustion air inlet pressure/flow/mass flow.
  • a ventilation unit is arranged to provide a controllable cross section opening of a duct between the outside of the chimney and the inside of the chimney, and the ventilation unit is arranged at a point below the exhaust inlet from the fuel burning heating device for increasing the pressure inside the chimney when top mounted fan is not operating, and the pressure in the chimney is below the specified pressure requirements of the fuel burning heating device.
  • the pipe configuration comprise additional means for altering the pressure status along the inside of the chimney. This may be achieved by providing an additional air inlet through a controllable duct, opening and closing a conduit between the lower portion of the chimney and the ambient air, the conduit then being arranged below the exhaust inlet from the fuel burning heating device.
  • the conduit may be coupled to a gas/air supply at a higher pressure than inside the chimney. This will add a further dimension to the controllers ability to quickly adapt the pressure inside the chimney on a very short response time.
  • the top mounted fan is arranged in the upper portion of the chimney interior to provide a controllable suction effect in the chimney interior relative the pressure outside on the peripheral side of the fan.
  • the controller is provided with controlling schemes individually adapted a furnace operation phase of the fuel burning heating source in the heating device.
  • the furnace operation phase of the fuel burning heating source is one of: Lighting a fire, Stand by, Boost, Normal operation, Burnout, and Tuning.
  • controlling schemes for each furnace operation phase comprise an activation condition defined by readings above/below preset thresholds of the one or more sensors.
  • the controller is provided with a timer unit for timing the controlling schemes furnace operation phases.
  • the timer is used to provide delays and predefined timing for pressure and/or draft increase, and other.
  • the timer unit comprises individual controlling timing schemes for each transition between furnace operation phases.
  • the chimney comprises one or more sensors for measuring: particles, CO, 02, CO2, flow, and mass flow.
  • each furnace operation phase is associated with a pressure and particle/CO/O2/CO2 emission rate relationship established individually for the chimney and the fuel burning heating device configuration.
  • the one or more thermocouple sensors are arranged in one or more of: a duct arranged between the heating device and the chimney interior, and in the lower interior portion of the chimney interior, and the one or more thermocouple sensors are connected to the controller.
  • thermocouple sensor sits the furnace, the better control it is possible to facilitate, although a sensible lookup table may fairly quickly be defined by running a few burning sequences, and program the controller according to the findings.
  • This process may also advantageously be including a training scenario for a deep learning actions, and provision of a trained Al (Artificial Intelligence) module to define the correct setting of the assembly.
  • Al Artificial Intelligence
  • the controller controls the ventilation unit and/or the top mounted fan to establish a pressure profile optimized for heating efficiency and/or emission of particles/CO/O2/CO2 of the fuel burning heating source.
  • a method for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney comprising the steps: providing a chimney control assembly according to the first aspect, configuring the controller with a set of predefined configuration parameters optimized for a fuel burning heating device, starting a fire in the fuel burning heating device, increasing the draft in the fire startup phase by increasing the speed of the top mounted fan for shortening the ignition time and quickly reaching the operating temperature of the heating source, reading the thermocouple sensor and the at least one pressure sensor and regulating the draft induced by the top mounted fan to maintain required pressure and/or temperature.
  • the method further comprises the steps: when the furnace door sensor detects that the furnace door is opened:
  • top mounted is to be interpreted to at least encompass: mounted at, close to, or in the upper portion of the chimney, or at least above the uppermost exhaust inlet from a heating device.
  • negative pressure is used to denote a pressure state for example inside the chimney that is lower than the ambient pressure outside the fireplace and/or the chimney outlet, and is a result of ho air rising inside the chimney, and/or a fan mounted in the chimney pulling air/gas up and out of the chimney.
  • Figure 1 shows a principle drawing of a fuel burning heating device coupled to a chimney and comprising a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney according to an embodiment of the present disclosure.
  • Figure 2A shows a block diagram of the control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney according to an embodiment of the present disclosure connected to a cloud/remote service provider.
  • Figure 2B show a block diagram of one embodiment of a fuel burning heating device according to an embodiment of the present disclosure
  • Figure 3A shows a diagram visualizing pressure/time readings from a test run using 6 pressure sensors.
  • Figure 3B presents a table comprising time/temperature readings from the positions of sensor 1-5 of the test run described in figure 3A.
  • Figure 4 shows a flow diagram illustrating one embodiment of controlling a complete fireplace burning session as discussed in present disclosure Detailed description
  • Figure 1 shows a fuel burning heating device coupled to a chimney and comprising a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney according to an embodiment of the present disclosure.
  • a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney according to an embodiment of the present disclosure.
  • there sensor arrangement probably will be less, and as discussed below for the test run an initial fire sequence may be sufficient to establish that it may be enough for one or two pressure sensors to provide the required input for analysis and find the optimal draft and pressure condition for a specific heating device.
  • the implementation of the assembly of present disclosure may be custom fitted to install sensors at most convenient locations along the draft path of the heating device and chimney.
  • one heating device 1 is provided with a chimney 2, and a controller 5 and a top mounted fan 4 as illustrated in the figures. It shall be understood that, although not optimal, two or more heating devices 1 may be arranged and connected to the same chimney 2 (not shown). Typically where there are more floors/levels in a building and a heating device 1 in each floor/level is connected to the same chimney 2. Thus the controller 5 may receive input from sensors arranged in the chimney, and in the vicinity of each or some of the heating devices 1 coupled to the chimney 2. The controller logic/SW may then be provided with computing resource able to find a best negative pressure characteristics inside the chimney 2 to optimize the draft and furnace operation phase in the one, or more, or most of or all of the coupled heating devices 1.
  • the first aspect of this disclosure shows a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney, comprising: a fuel burning heating device 1, a chimney 2 comprising a hollow interior, wherein the fuel burning heating device 1 having an exhaust gas outlet 6 connected to the interior of the chimney via an exhaust inlet 7 arranged in the lower portion of the chimney 2, and the assembly further comprising: two or more sensors 11,12,13,14,15,16, a top mounted fan 4, and a controller 5, wherein the controller comprise: a set of parameters reflecting the specified pressure requirements of the fuel burning heating device 1, input connected to, for reading, the one or more sensors 11,12,13,14,15,16, and output connected to, for controlling, the top mounted fan 4 such that the pressure requirements of the fuel burning heating device 1 can be achieved.
  • a pressure driven fan has been shown to excel over a temperature driven fan is for example when a door in the fuel burning heating device 1 is opened, and the inrush of cold air instantly changes the negative pressure conditions in the chimney. Since the temperature and the temperature sensor will be a lot slower in responding to the changed pressure conditions than the pressure sensor(s), the draft may be much more quickly set to compensate for the changed pressure conditions when driven by pressure sensors rather than temperature sensors.
  • the set of parameters reflecting the specified pressure requirements of the fuel burning heating device is individually specified by the vendor of the fuel burning heating device.
  • the parameters may define one or more of but not limited to: exhaust air temperature, negative pressure , air flow (draft), parameters for one or more burning phases, chimney characteristics (cross section and/or length), fuel type, and other.
  • the controller is programmed/selected for the specific fireplace arranged and connected to the chimney upon installation, and the parameters should be chosen as close to the vendors settings as possible.
  • the sensors 11,12,13,14,15,16 provides data sampled from the exhaust path and chimney from the fuel burning heating device 1 and/or bottom of the chimney 2 to the top mounted fan 4, the top mounted fan4 being mounted at, close to, or in the upper portion of the chimney, or at least above the uppermost exhaust inlet from a heating device, and the controller reading the sensor data and processing these for optimizing the furnace (98) operation phase.
  • the two or more sensors 11,12,13,14,15,16 may comprise at least one thermocouple sensor 13 at the outlet of exhaust gases from the heating device, and/or at least one pressure sensor 12,14,15 for measuring the pressure in the chimney 2.
  • the controller may receive data for instant pressure measurement from the internal of the chimney 2, and typically the controller comprise an ambient pressure sensor 18 for measuring ambient pressure outside the chimney 2, and comparing the sensor readings outside and inside the chimney 2 enables the controller to control negative pressure in the chimney and the draft through the fuel burning heating device 1 to control the furnace 98 to optimize efficiency of the heating process and operation phase according to the vendor specific requirements.
  • the controller may substitute the reading from an ambient pressure sensor 18 with a preset pressure value, or a reading from a further pressure sensor on the far side of the chimney or the far side of the fan, or in a next exhaust system portion.
  • a relation between pressure and temperature may be established for each operation phase, and used to set thresholds and levels for the top mounted fan 4 operation.
  • the top mounted fan 4 may be controlled to mitigate such pressure change. If the furnace 98 burns too fierce the controller may slow or stop the fan to decrease pressure inside the chimney 2.
  • the fuel burning heating device 1 further comprises a furnace door 20 for accessing and feeding a furnace inside the heating device 1, and a furnace door opening sensor 17 for detection of the furnace door 20 open/close status.
  • the furnace door opening sensor 17 may feed the controller 5 with information when the door 20 is opened, and this may signal that the negative pressure change inside the chimney 2 within short. Typically the opening of the door will also signal that additional fuel such as firewood may be added to the furnace.
  • the controller may upon reading the signal from the door opening sensor 17 change the fan 4 operation speed level. In one embodiment the controller may activate a timer 50 which will be used for controlling the duration of the changed fan 4 operation speed. In one example the fan speed change may be delayed 2 seconds and fan speed may then be ramped up/down during a second time period, for example 3 seconds, to reach fan speed setting for the specific operation mode. The new speed may then be maintained until a new operation mode is detected, or the set duration ends, and previous or new speed is set.
  • the controller 5 may further, as illustrated in the block diagram in figure 2B, comprise a communication module 51 provided for communicating sensor data and computations to a remote computer device 70, such as a cloud server program 70.
  • the communication may be organized to be sent in batches, and a local storage device 52 may be provided to store sensor data and computations made by the controller 5.
  • the remote computer 70 may also be a smartphone or similar.
  • the communication medium 60, 60' may be provided over any adequate wired and/or wireless communication protocol, such as a cloud network, alone or in combination, for example, but not limited by: WAN, LAN, Wi-Fi, Bluetooth, NFC, GSM, GPRS, UMTS, HSPA, CDMA and others.
  • the sensors themselves may be set up to communicate directly with remote services as illustrated in figure 2A.
  • One such may be an overheating alarm sensor arranged to signal directly to for example a fire department, or a service organization services.
  • a ventilation unit 3 may be comprised for providing a controllable cross section opening of a duct between the outside of the chimney and the inside of the chimney 2, and the ventilation unit 3 may be arranged at a point below the exhaust inlet 7 from the fuel burning heating device 1 for increasing the pressure inside the chimney 2 when top mounted fan 4 is not operating, and the negative pressure in the chimney is higher the specified pressure requirements of the fuel burning heating device 1.
  • the ventilation duct 3 for facilitating a quick pressure change when the draft is becoming too high, and/or the draft into the furnace is too high.
  • a fierce burning furnace creates a self-amplifying draft and increasing negative pressure inside the chimney 2. This may happen even if the fan is at a standstill.
  • Being able to mitigate the too high negative pressure inside the chimney then may be achieved by increasing/providing an opening through the ventilation duct 3.
  • the opening feature in the ventilation duct 3 may be an analogue variable opening control, or a stepwise opening device, or a digital open-close feature.
  • the ventilation duct opening control typically is controlled by the controller 5.
  • the top mounted fan 4 may advantageously be arranged in the upper portion of the chimney 2 interior to provide a controllable suction effect in the chimney interior relative the ambient outside, or preset, or readings from other sensors, pressure.
  • the fan may be arranged in a lower portion of the chimney.
  • the fan When arranged in the upper portion of the chimney 2 it is possible to use the fan to control the pressure along the complete exhaust path 99 inside the heating device 1 and chimney 2.
  • the controller 5 may be provided with controlling schemes individually adapted to a furnace 98 operation phase of the fuel burning heating source in the heating device 1.
  • the initial test run in the initial setup fire sequence may be used to establish and configure the controller 5, and comprise the various pressure thresholds that may apply for controlling and activating/disabling the top mounted fan 4 and/or the ventilation duct 3.
  • the controller threshold configuration may be preset before installation, and the test run may be skipped.
  • the controller 5, the fan 4, and the sensors 11, 12, 13, 14, 15, 16, 16' may be provided in a retrofit format for mounting in existing fireplace and chimneys. Typically the sensors then are of a wireless type.
  • the furnace operation phase of the fuel burning heating source may be, but is not limited to, one of: Lighting a fire, Stand by, Boost, Normal operation, Burnout, and Tuning.
  • Pressure sensor may provide input to the controller such that processing unit in controller 5 may establish proper fan 4 and/or ventilation unit 3 operation state, such as fan speed or ventilation opening.
  • the flow diagram of figure 4 may illustrate one embodiment of controlling a complete fireplace burning session as discussed in present disclosure.
  • the controlling schemes for each furnace operation phase may comprise an activation condition defined by readings above/below preset thresholds of the one or more sensors 11,12,13,14,15,16, as illustrated in Table 1 above.
  • the controller 5 may comprise a timer unit 50 for timing the controlling schemes furnace 98 operation phases.
  • the timer unit 50 the chimney may further comprise individual controlling timing schemes for each transition between furnace operation phases.
  • the timer feature may further be used to ramp up/down fan 4 and/or ventilation unit 3 operation state, such as fan speed or ventilation opening during any furnace operation phase.
  • the chimney may further comprise one or more particle/CO/O2/CO2 sensors 16, which may be used for additional analysis by the controller.
  • the particle/CO/O2/CO2 sensors may be used to adjust fan 4 and/or ventilation unit 3 operation state, such as fan speed or ventilation opening during any furnace operation phase independent on pressure and temperature readings.
  • the particle/CO/O2/CO2 sensor 16 data may then under certain operation conditions override the preset configuration of the controller. Typically may using different fuel during a fire sequence require alterations to preset configuration to optimize efficiency and pollution.
  • Each furnace operation phase may be associated with a pressure and particle/CO/O2/CO2 emission rate relationship established individually for each chimney 2 and fuel burning heating device 1 configuration.
  • any vendor may provide a preset controller configuration for any known chimney product, heating device, chimney length, and sensor arrangement.
  • the fuel burning heating device 1 comprises a sensor 16' for detection of the furnace combustion air inlet pressure/flow/mass flow.
  • the furnace combustion air inlet pressure/flow/mass flow sensor 16' may be connected to the controller 5, and the controller 5 may further comprise the ability to adjust the combustion air inlet in order to optimize draft through the fuel burning heating device 1 and the negative pressure in the chimney.
  • thermocouple sensor 13 may be arranged in a duct 8 which may be arranged between the heating device 1 and the chimney 2 interior, and/or in the lower interior portion of the chimney 2 interior, and connected to the controller 5. Temperature readings may also be provided by a temperature sensor provided in the fan unit 4.
  • the controller may further comprise an ambient air temperature sensor, and use this to establish relative temperature difference between the exhaust and ambient temperature. Thus any senor data established from the chimney or heating device may be compared to corresponding ambient sensor readings to establish differences to ambient data, and this difference, Delta, is used to define current configuration of fan 4 and/or ventilation unit 3 operation state, such as fan speed or ventilation opening.
  • the sensors may be wired/wireless sensors, communicating with the controller over a wired/wireless communication channel.
  • the wireless sensors are powered by batteries, or when passive sensors they may be powered by the received wireless signal from teh controller.
  • One example of such unpowered wireless sensors may be an RFID temperature sensor.
  • controller, fan, and valves are typically powered by a power connection to the power grid, or alternatively powered by a battery or similar.
  • the controller may substitute the temperature readings reading from the thermocouple sensor 13 with a preset temperature value, or a reading from a further temperature sensor on the far side of the chimney or the far side of the fan, or in the next exhaust system portion.
  • the controller 5 may control the ventilation unit 3 and/or the top mounted fan 4 to establish a pressure profile optimized for heating efficiency and/or emission of particles/CO/O2/CO2 of the fuel burning heating source 1.
  • the second aspect of this disclosure shows a method for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney, the method comprising the steps: providing a chimney control assembly according to the first aspect to the first aspect, configuring the controller with a set of predefined configuration parameters optimized for a fuel burning heating device, starting a fire in the fuel burning heating device 1, increasing the draft in the fire startup phase by increasing the speed of the top mounted fan 4 for shortening the ignition time and quickly reaching the operating temperature of the heating source 1, reading the thermocouple sensor 13 and the at least one pressure sensor 12,14,15 and regulating the draft induced by the top mounted fan 4 to maintain required pressure and/or temperature.
  • the graph drops down, meaning the pressure difference is less, meaning closer to the ambient pressure.
  • the surface temperature of the pipe was measured at 5 locations (close to the first 5 sensors), using an IR temperature reader. All temperature readings are in degrees Celsius.
  • a further method may be provided to comprises the initial steps: when the furnace door sensor 17 detects that the furnace door 20 is opened:
  • the method may further comprise the steps: for each phase comprising one of:

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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)

Abstract

L'invention concerne un ensemble de commande de cheminée permettant de réduire au minimum l'émission de particules dans un processus de combustion dans un dispositif de chauffage à combustion de carburant relié à une cheminée, comprenant : un dispositif de chauffage à combustion de carburant (1), une cheminée (2) comprenant un intérieur creux, le dispositif de chauffage à combustion de carburant (1) présentant une sortie de gaz d'échappement (6) reliée à l'intérieur de la cheminée par l'intermédiaire d'une entrée d'échappement (7) agencée dans la partie inférieure de la cheminée (2), et l'ensemble comprenant en outre : deux capteurs ou plus (11, 12, 13, 14, 15, 16), un ventilateur monté sur le dessus (4) et un dispositif de commande (5), le dispositif de commande comprenant : un ensemble de paramètres reflétant les exigences de pression spécifiées du dispositif de chauffage à combustion de carburant (1), une entrée reliée, pour la lecture, à l'au moins un capteur (11, 12, 13, 14, 15, 16), et une sortie reliée pour la commande, au ventilateur monté sur le dessus (4) de sorte que les exigences de pression du dispositif de chauffage à combustion de carburant (1) puissent être obtenues. L'invention se rapporte en outre à un procédé d'optimisation du processus de combustion dans un dispositif de chauffage à combustion de carburant.
PCT/NO2022/050326 2021-12-23 2022-12-22 Ensemble de commande de cheminée permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant et procédé permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant Ceased WO2023121479A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22912072.0A EP4453475A4 (fr) 2021-12-23 2022-12-22 Ensemble de commande de cheminée permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant et procédé permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20211587 2021-12-23
NO20211587A NO348238B1 (en) 2021-12-23 2021-12-23 A chimney control assembly for optimizing the combustion process in a fuel burning heating device and a method for optimizing the combustion process in a fuel burning heating device

Publications (1)

Publication Number Publication Date
WO2023121479A1 true WO2023121479A1 (fr) 2023-06-29

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PCT/NO2022/050326 Ceased WO2023121479A1 (fr) 2021-12-23 2022-12-22 Ensemble de commande de cheminée permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant et procédé permettant de réduire au minimum l'émission de particules dans un dispositif de chauffage à combustion de carburant

Country Status (3)

Country Link
EP (1) EP4453475A4 (fr)
NO (2) NO348238B1 (fr)
WO (1) WO2023121479A1 (fr)

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EP4538595A1 (fr) * 2023-10-11 2025-04-16 Altrefiamme S.r.l. Dispositif et procédé de commande d'une installation de combustion

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US4250868A (en) * 1978-08-04 1981-02-17 Frye Filmore O Draft inducer/damper systems
EP1236957A2 (fr) * 2001-03-01 2002-09-04 Robert Bosch Gmbh Procédé et dispositif d'adaptation d'un appareil de chauffage à brûleur à un système d'évacuation d'air/de gaz brûlés
GB2381062A (en) * 2001-07-18 2003-04-23 Simon Guy Somerset Cartwright A flue fan unit
US20090215375A1 (en) * 2003-03-06 2009-08-27 Greenvex Fan Assemblies, Mechanical Draft Systems and Methods
DE202004020320U1 (de) * 2004-01-22 2005-04-21 Bbt Thermotechnik Gmbh Festbrennstoffkessel
US20190277499A1 (en) * 2010-06-04 2019-09-12 Maxitrol Company Control System And Method For A Solid Fuel Combustion Appliance

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See also references of EP4453475A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4538595A1 (fr) * 2023-10-11 2025-04-16 Altrefiamme S.r.l. Dispositif et procédé de commande d'une installation de combustion

Also Published As

Publication number Publication date
NO20211587A1 (en) 2023-06-26
EP4453475A1 (fr) 2024-10-30
EP4453475A4 (fr) 2025-11-05
NO348238B1 (en) 2024-10-21
NO20221396A1 (en) 2023-06-26

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