EP4276355A2 - Biokraftstoffheizvorrichtung und vorrichtung dafür - Google Patents

Biokraftstoffheizvorrichtung und vorrichtung dafür Download PDF

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Publication number
EP4276355A2
EP4276355A2 EP23173256.1A EP23173256A EP4276355A2 EP 4276355 A2 EP4276355 A2 EP 4276355A2 EP 23173256 A EP23173256 A EP 23173256A EP 4276355 A2 EP4276355 A2 EP 4276355A2
Authority
EP
European Patent Office
Prior art keywords
fuel
channel
burner
sensor
pump
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.)
Pending
Application number
EP23173256.1A
Other languages
English (en)
French (fr)
Other versions
EP4276355A3 (de
Inventor
James Roy ARCHER
John Francis Kennedy
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.)
Arke Technical Ltd
Original Assignee
Arke Technical Ltd
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 Arke Technical Ltd filed Critical Arke Technical Ltd
Publication of EP4276355A2 publication Critical patent/EP4276355A2/de
Publication of EP4276355A3 publication Critical patent/EP4276355A3/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/12—Details
    • F23D5/123—Inserts promoting evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2202/00—Liquid fuel burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2206/00—Burners for specific applications
    • F23D2206/0057—Liquid fuel burners adapted for use in illumination and heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/31021—Vaporisers with devices for controlling the feeding of the fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/31022—Alcohol vapour burners

Definitions

  • the present invention relates to a liquid fuel heating apparatus, a bioethanol fireplace or stove, in particular to a device for burning liquid fuel in the same.
  • space heaters for heating rooms in domestic and commercial properties.
  • space heaters have been fuelled by burning wood or fossil fuels such space heaters may have visible flames and have a pleasing aesthetic property.
  • biofuel For environmental reasons it is desirable to use a renewable energy source such as a biofuel to provide energy for a space heater, one such biofuel is bioethanol.
  • the present disclosure is concerned with providing a heating apparatus fuelled by a liquid fuel such as bioethanol which has the aesthetic qualities of a traditional log, a coal fire, a gas stove or a stove.
  • the present invention seeks to overcome or at least mitigate the problems of the prior art.
  • a first aspect of the present invention provides an apparatus for burning liquid fuel, the apparatus may comprise:
  • the flow rate may be significantly reduced compared to a similar sized product, with a similar heat output capacity and may reduce fuel consumption by 30% to 50%.
  • the apparatus comprises a scenery member mounted to the at least one burner.
  • a sensor is mounted in the channel at a lower end thereof for preventing the accumulation of unburnt fuel.
  • a fuel sensor is mounted in the channel at a lower end thereof for detecting the presence of unburnt fuel.
  • the apparatus comprises a controller in communication with the fuel sensor and the pump for controlling the rate of fuel delivery to the at least one burner in dependence upon fuel sensor data.
  • the controller deactivates the pump when the fuel sensor detects the presence of fuel.
  • a flame sensor is mounted in the channel at a lower end thereof for detecting the presence or absence of a flame.
  • the apparatus comprises a controller in communication with the flame sensor and the pump for controlling the rate of fuel delivery to the at least one burner in dependence upon flame sensor data.
  • the controller deactivates the pump when the flame sensor detects the absence of a flame.
  • the liquid fuel is a biofuel.
  • the liquid fuel is a bioethanol.
  • the fuel flow retarder is a ceramic fibre or other suitable material.
  • the fuel flow retarder is aluminium oxide.
  • the channel is oriented with respect to the platform at an angle of inclination in the range 5° to 60°.
  • the channel is oriented with respect to the platform at an angle of inclination in the range 10° to 45°.
  • the channel is oriented with respect to the platform at an angle of inclination in the range 15° to 20°.
  • the channel comprises a cover panel for mounting the scenery member.
  • a second aspect of the present invention provides an apparatus for burning liquid fuel, the apparatus may comprise:
  • a third aspect of the present invention provides an apparatus for burning liquid fuel, the apparatus may comprise:
  • the senor is a flame sensor is mounted proximate the igniter for detecting the presence of a flame.
  • the senor is a flame sensor is mounted proximate the igniter for detecting the absence of a flame.
  • the flame sensor is integrated with the igniter.
  • the senor is a fluid or liquid sensor for detecting the accumulation of unburnt fuel.
  • a fourth aspect of the present invention provides a burner for burning liquid fuel, the burner may comprise;
  • a fifth aspect of the present invention provides a burner for burning liquid fuel, the burner may comprise;
  • a sixth aspect of the present invention provides an apparatus for burning liquid fuel, the apparatus may comprise:
  • a feature, or combination of features, of an embodiment disclosed herein may be extracted in isolation from other features of that embodiment.
  • a feature, or combination of features, of an embodiment may be omitted from that embodiment.
  • FIG. 1 there is shown a device 10 for use in a space heater such as that shown in Figures 3 and 4 .
  • the device 10 comprises at least one burner 11A, 11B mounted to a platform 12.
  • the illustrated embodiment comprises two burners 11A, 11B although in other embodiments one or more burners 11A, 11B may be employed and the number employed may be selected based upon the heat or energy output desired.
  • the platform 12 may comprise an upstanding wall 9A/9B/9C/9D surrounding the perimeter of the platform 12 to form a tray or receptacle.
  • the tray or receptacle may be liquid-tight, that is to say capable of holding a volume of liquid, fuel, without leaking.
  • the upstanding wall 9A/9B/9C/9D comprises a front wall 9C, rear wall 9D and opposed end wall 9A, 9B extending therebetween.
  • the device 10 comprises a fuel tank 14 in which a volume of liquid fuel may be stored.
  • the liquid fuel may be bioethanol.
  • the fuel tank is in fluidic communication with at least one pump 16, 18.
  • the device 10 comprises two pumps 16, 18.
  • the illustrated embodiment comprises a pump for each burner 11A, 11B.
  • Each pump 16, 18 is coupled or connected to the fuel tank by a pipe or conduit 13, 19.
  • the pipe 13, 19 may be formed from a material which is resistant to the liquid fuel, such as but not limited to stainless steel.
  • the pumps 16, 18 are independently controllable and the flow rate of each pump can be independently adjusted to optimise the fuel burn and/or appearance of the flames.
  • the fuel tank 14 comprises a fill inlet 20, the fill inlet may be coupled to a secondary fuel tank (not shown).
  • the secondary fuel tank may be larger in volume than the primary tank 14 and located at a distance therefrom for safety considerations.
  • Each burner 11A, 11B is in fluidic communication with one of the pumps 16, 18.
  • Each burner 11A, 11B is coupled or connected to its respective pump 16, 18 by a pipe or conduit 15, 17.
  • the pipe 15, 17 may be formed from a material which is resistant to the liquid fuel, such as but not limited to stainless steel.
  • the pumps 16, 18 may be peristaltic pumps, however in other embodiments alternative pump mechanisms may be employed.
  • the burners 11A, 11B comprise a flume or chute 24 in the form of a channel. At least one end of the flume 24 may be closed. In the illustrated embodiment, both end of the flume 24 are closed.
  • the flume 24 is mounted to the platform 12 by a mount 34 at an inclined angle, the flume 24 is inclined with respect to the horizontal such that liquid fuel runs or flows down the chute 24 under to force of gravity.
  • the angle may be in the range 5° to 60°, 10° to 45°, and may be about 15° to 20°.
  • each flume 24 may be mounted at the same or different angle of inclination.
  • the flume 24 may comprise a top cover 22 at least partially closing the channel.
  • Side walls 25 may comprise at least one opening.
  • the at least one opening allows air, in particular oxygen, to enter the interior of the flume 24.
  • the at least one opening may also allow escape of fuel vapour and or flames.
  • each of the opposed side walls of the flume 24 comprises a pair of openings spaced apart from each other.
  • the openings may be elongate or cigar shaped.
  • a fuel inlet is provided in one of the side walls 25 at or proximate a first, upper, end of the flume 24.
  • the fuel inlet is in fluidic communication with the respective pump 16, 18.
  • a first pipe 15 couples a first burner 11A to a first pump 16.
  • a second pipe 17 couples a second burner 11B to a second pump 18.
  • the fuel inlet is provided in a rearward side wall of the flume 24.
  • the flume 24 may comprise or define a "V" or "U” shaped channel in which the fuel flows.
  • the base wall of the flume 24 may comprise a fuel flow retarder for slowing the rate of descent of the fuel from the first, upper, end of the flume 24 to the second, lower, end of the flume 24.
  • the fuel flow retarder takes the form of a ceramic fibre such as alumina (aluminium oxide). In other embodiments, other materials may be employed.
  • the interior of the flume 24 may comprises a plurality of baffles or restrictors for reducing the rate of descent of the fuel down the flume 24; such restrictors may take the form of one or more orifice plates.
  • the fuel flow retarder may also increase the surface area with which the fuel come into contact and improves the rate of evaporation of the fuel.
  • Each burner 11A, 11B comprises a first opening 30 at or proximate the second, lower, end of the flume 24, the first opening 30 may be provided in a rearward side wall of the flume 24.
  • the first opening 30 is configured to receive an ignition source in the form of an igniter (not shown).
  • the igniter is in electrical communication with a controller 40 via an electrical connection or cable 36.
  • Each burner 11A, 11B comprises a second opening 32 at or proximate the second, lower, end of the flume 24, the second opening 32 may be provided in a rearward side wall of the flume 24, and may be proximate to the first opening 30.
  • the second opening 32 is disposed between the first opening and the second, lower, end of the flume 24.
  • the second opening 32 is configured to receive a sensor (not shown). The sensor is in electrical communication with the controller 40 via an electrical connection or cable 36.
  • the sensor may be arranged to detect the build-up of unburnt fuel at the lower end of the flume 24 and to communicate the presence of unburnt fuel at the sensor location to the controller 40.
  • the controller 40 is in electrical communication with each of the pumps 16, 18. Upon received data from the sensor indicative of the presence of unburnt fuel at the sensor location the controller 40 deactivates the respective pump 16, 18 in fluidic communication with the burner 11A, 11B to which said sensor is mounted. In this way the further build-up or collection of unburnt fuel in the flume 24 is prevented.
  • the sensor may take the form of a liquid sensor, capable of detecting a change in an electrical characteristic, such as, but not limited to, resistance, capacitance or inductance.
  • the sensor may be arranged to detect the presence or absence of a flame. In such embodiments, when the sensor detects the absence of a flame, a controller instructs the pump 16, 18 to deactivate (or may close a valve) to prevent the build-up or accumulation of unburnt fuel in the burner 11A, 11B.
  • the sensor may be integrated with the igniter and may take the form of an ignition electrode pilot spark flame sensor probe.
  • the sensor may be a thermocouple or may be a rectification flame sensor. In other embodiments, the sensor may be an optical sensor.
  • the flame sensor may be deactivated during an ignition sequence such that the pump 16, 18 can provide fuel to the burner 11A, 11B to be ignited.
  • the controller may be configured to deactivate the pump 16, 18 or close a valve in the fuel supply line after detecting the absence of a flame for a threshold period of time.
  • the apparatus may comprise a primer or priming sequence for priming the burner 11A, 11B with fuel in preparation for ignition.
  • the primer may take the form of a manual pump for pumping fuel to the burner 11A, 11B.
  • the priming sequence may take the form of activating the pump 16, 18 for a period of time prior to commencing the ignition of the fuel.
  • the embodiment shown in Figure 1 comprises an optional overflow tank 50, the overflow tank 50 is in fluidic communication with the tray and or the flumes 24. Any unburnt fuel which reaches the lower end of the flume 24 may be collected in the tray and/or overflow tank 50.
  • Figure 5 illustrates an alternative embodiment of the present disclosure. The alternative embodiment shares many common features with the first embodiment and therefore only the differences from the embodiment illustrated in Figures 1 to 8 will be described in any greater detail.
  • like numerals have, where possible, been used to denote like parts, albeit with the addition of the prefix "100" to indicate that these features belong to the second embodiment.
  • the overflow tank 50 has been omitted and unburnt fuel is collected in the tray. The unburnt fuel evaporates or vaporises and is dispersed to atmosphere.
  • the burner 11A, 11B may be mounted to the platform 12 such that one end of the flume 24 is disposed in closer proximity to the front wall 9C of the tray than the other end. In the illustrated embodiment, the second, lower, end of the flume 24 is disposed in closer proximity to the front wall 9C of the tray. In this way the burners 11A, 11B are divergently arranged with respect to each other and with respect to the front wall 9C of the tray.
  • the space heater 90 comprises a housing in which the device 10 is mounted.
  • the housing may comprise a top wall, a bottom wall, opposed side walls and a rear wall RW.
  • the housing defines an interior chamber in which a device 10 is located.
  • the housing comprises an opening or window in at least a part of a front wall of the housing.
  • a frame member SR may surround the opening or window.
  • the frame member SR may comprise a receiver RC for mounting a front panel WN, see Figure 4 .
  • the front panel WN provides at least in part a window panel.
  • the window panel may be formed from glass, suitable plastic material or other suitable transparent material.
  • a scenery element 52A, 52B is mounted to each flume 24, as shown in Figure 4 .
  • the scenery element 52A, 52B takes the form of a log.
  • the scenery element 52A, 52B may be moulded to take desired shape so as to appear to be a combustion fuel used in traditional space heaters.
  • the scenery element 52A, 52B is arranged to generally conceal or hide from view the burner 11A, 11B.
  • the scenery element 52A, 52B may comprises cutaway or aperture to control or facilitate air flow to the burner 11A, 11B in order to efficiently burn the fuel delivered to the burner 11A, 11B.
  • the burner and scenery element 52A, 52B are configured to give the impression of a traditional log fire, the airflow and fuel delivery is controlled to produce flames which appear to be produced by burning of the scenery element 52A, 52B.
  • additional scenery elements may be provided to conceal or hide the fuel delivery pipes 15, 17 and or mounting bracket 34.
  • the space heater 90 may comprises an outlet in the housing coupled to a flue, chimney or stove pipe for dispersal of waste products or an open appliance directly to room. Although when burning bioethanol this may not be required since the waste products are water (steam) and carbon dioxide.
  • the present disclosure provides a burner 11A, 11B; 111A, 111B for use with a stove or fireplace which comprises a chamber for receiving the burner 11A, 11B; 111A, 111B.
  • the burner 11A, 11B; 111A, 111B comprises a flume 24; 124 mounted at an inclined angle. Liquid fuel is delivered to an upper, inlet end of flume 24; 124. The liquid fuel flows or descends down the flume 24, the fuel is ignited and raises the temperature of the flume 24; 124. In doing so the liquid fuel vaporises or evaporates as it descends the flume and burns along the length of the flume 24; 124.
  • the burner 11A, 11B; 111A, 111B may comprises a scenery element 52A, 52B selected to give the impression of a traditional solid fuel source.
  • the rate of fuel delivery provided by the pump 16, 18 is selected or adjusted such that substantially all the fuel is burnt before reaching the lower end of the flume 24.
  • the rate of fuel delivery is also selected such that the entire scenery element 52A, 52B or burner 11A, 11B; 111A, 111B appears to be aflame or burning.
  • the tray and/or overflow tank 50 comprises a sensor for detecting the presence of fuel and arranged to indicate the tray or overflow tank 50 at, or is reaching, full capacity.
  • the sensor is coupled to the controller 40 such that the controller 40 can deactivate the pumps 16, 18 to prevent overflow of the tray and/or overflow tank 50.
  • the scenery elements may not take the form of traditional fuel sources such as logs or coals.
  • the controller may be in electrical communication with a valve for controlling fuel delivery to the burners 11A, 11B; 111A, 111B.
  • stove As used herein the terms stove, fireplace, log burner, and fire refer to an apparatus which has an appearance typically associated with a heat source.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
EP23173256.1A 2022-05-13 2023-05-12 Biokraftstoffheizvorrichtung und vorrichtung dafür Pending EP4276355A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2207043.7A GB2618619A (en) 2022-05-13 2022-05-13 Biofuel heating apparatus and device for same

Publications (2)

Publication Number Publication Date
EP4276355A2 true EP4276355A2 (de) 2023-11-15
EP4276355A3 EP4276355A3 (de) 2024-03-13

Family

ID=82155987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23173256.1A Pending EP4276355A3 (de) 2022-05-13 2023-05-12 Biokraftstoffheizvorrichtung und vorrichtung dafür

Country Status (2)

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EP (1) EP4276355A3 (de)
GB (1) GB2618619A (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008014866U1 (de) * 2008-11-08 2010-04-15 Siger Trading Limited Brennereinsatz für eine Feuerstelle
WO2012000562A1 (de) * 2010-07-02 2012-01-05 Schwoererhaus Kg Ethanolbrenner, insbesondere zum verbrennen von bio-ethanol
CN202171283U (zh) * 2011-07-29 2012-03-21 宁波丽辰电器有限公司 一种液体燃料气化燃烧的壁炉
DK177438B3 (en) * 2012-01-19 2017-10-02 Decoflame Aps Electronically controlled burner
EP3309454A1 (de) * 2016-10-14 2018-04-18 Produktide AS Brenneranordnung

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Publication number Publication date
GB202207043D0 (en) 2022-06-29
GB2618619A (en) 2023-11-15
EP4276355A3 (de) 2024-03-13

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