EP4669910A1 - Réservoir de combustible pour un foyer de table - Google Patents

Réservoir de combustible pour un foyer de table

Info

Publication number
EP4669910A1
EP4669910A1 EP24701187.7A EP24701187A EP4669910A1 EP 4669910 A1 EP4669910 A1 EP 4669910A1 EP 24701187 A EP24701187 A EP 24701187A EP 4669910 A1 EP4669910 A1 EP 4669910A1
Authority
EP
European Patent Office
Prior art keywords
fuel
sponge
fuel tank
fuel container
container
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
EP24701187.7A
Other languages
German (de)
English (en)
Inventor
Thomas Kaiser
Christian Wassermann
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.)
Fire Friends & Co Kg GmbH
Original Assignee
Fire Friends & Co Kg 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
Priority claimed from DE102023205512.0A external-priority patent/DE102023205512B4/de
Application filed by Fire Friends & Co Kg GmbH filed Critical Fire Friends & Co Kg GmbH
Publication of EP4669910A1 publication Critical patent/EP4669910A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D3/00—Burners using capillary action
    • F23D3/02—Wick burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D3/00—Burners using capillary action
    • F23D3/40—Burners using capillary action the capillary action taking place in one or more rigid porous bodies
    • 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
    • F23D2900/31004—Wick burners using alcohol as a 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
    • F23D2900/31006—Details of blue flame wick burners

Definitions

  • the invention relates to a fuel container for a table fire.
  • the invention also relates to a table fire with the fuel container.
  • a fuel container in the sense of the present invention refers to a container for the safe storage and safe removal of fuel, in particular during the combustion process.
  • a fuel container can be designed in particular as a canister, cartridge, bottle or cylinder made of materials such as glass, ceramic, sheet metal, other metals or suitable plastics.
  • the fuel container can be designed as a predominantly closed container with no refill option.
  • the fuel container can be at least partially open on its top.
  • the fuel container can include a resealable refill opening.
  • the fuel container is preferably made of rust-proof metal. The fuel container is then reliably fireproof and can be manufactured in a technically simple manner.
  • Fuel is a chemical substance whose stored energy is released through combustion.
  • (bio)ethanol, alcohol, petrol, oil or wax are fuels.
  • a fuel can be in liquid form, in solid form, as a gel or as a paste.
  • a table fire usually with a glass cylinder as an outer shell, the flame can be set in rotation with swirling air, so that the "tornado-like" appearance creates a special visual attraction for the viewer.
  • fire columns are also suitable for use indoors and are mainly used for decoration, but also for the relaxation of the residents, as is often attributed to open fireplaces (or simulated fireplaces on monitors).
  • Table fires are also used in outdoor areas, for example on terraces, where they can then also serve as a source of light and heat on colder evenings.
  • a table fire that comprises a fuel container for bioethanol and similar fuels.
  • the fuel container is open at the top.
  • the fuel contained in the fuel container can burn to produce a large, high and spiral-shaped flame. This is visually attractive and ensures particularly clean combustion.
  • the height and visibility of the flame produced changes. Immediately after lighting, the flame is usually very small and barely visible. Only after a certain time, often only after 1 to 2 minutes, does the flame reach the desired height and visibility. If the fuel in the fuel container has been largely used up, this also results in a lower flame height.
  • Liquid fuel such as liquid bioethanol can easily leak out of a fuel tank that is open at the top. This can also create too much soot.
  • the invention is based on the object of ensuring a more suitable burning process for table fires.
  • a fuel container that can have a sponge at the upper end.
  • the fuel container is designed so that liquid fuel in the fuel container is transported into the sponge.
  • the fuel container is designed so that the fuel contained in the sponge can be ignited to produce a flame.
  • the sponge can therefore be a combustion zone. This means that a uniformly high flame can be produced, largely regardless of the fuel level in the fuel container.
  • the sponge makes it possible to use liquid fuel such as bioethanol without any problems, as the sponge prevents fuel from spilling over. Liquid can indeed pass through a sponge, but the sponge can still prevent spilling over.
  • the sponge can regulate the amount of fuel, thus preventing excessive soot formation.
  • a fuel container with a sponge can be manufactured with particularly precise reproducibility without great technical effort.
  • the fuel container is liquid-tight. This means that liquid fuel can be kept in the fuel container permanently.
  • the fuel container comprises a base and a surrounding side wall.
  • the base and/or the surrounding side wall can be made of metal.
  • the base and side wall generally do not have a closable opening.
  • the base and side wall are connected to one another in a liquid-tight manner to form the liquid-tight container.
  • a sponge is a porous structure that is able to absorb and hold a liquid. If a sponge is placed on a surface, it retains the sponge basically at least essentially retains its shape. A sponge then hardly deforms due to its own weight. In principle, the sponge can then be elastically deformed by pressure.
  • the sponge can be made of a poorly flammable material such as cotton. However, the sponge is preferably made of a non-flammable material in order to ensure a permanently consistent appearance in a particularly reliable manner.
  • the sponge can be made of aramid, glass, for example glass fibers, or metal fibers.
  • the sponge can be flexible, i.e. can be deformed, preferably elastically deformed. The height of the sponge can be smaller than its depth and width or diameter. If the sponge is made of fibers, the fibers can extend in all directions. For example, there can be fibers that run essentially horizontally and/or fibers that run essentially vertically and/or fibers that run essentially diagonally to this. Fibers in a sponge can therefore run in different directions.
  • the sponge can be like cotton wool. However, it can also be the case that the fibers run at least essentially only in one direction, for example at least predominantly essentially only horizontally.
  • One or more wicks may be adjacent to the bottom of the sponge.
  • the one or more wicks are arranged so that they can transport liquid fuel from the fuel container into the sponge.
  • the one or more wicks may be attached to the top of the fuel container and extend into the fuel container.
  • the one or more wicks may be attached to a cover that at least partially covers the top of the fuel container.
  • the one or more wicks may be attached below the sponge.
  • the one or more wicks can extend towards the bottom of the fuel container.
  • the wicks can extend to the bottom of the fuel container or at least almost to the bottom of the fuel container in order to be able to transport fuel from the bottom towards the sponge.
  • the one or more wicks can be made of the same material as the sponge.
  • the one or more wicks can be made of a different material than the sponge. Since the wick is separated from the flame by the sponge, the material of the wick can only be made of a poorly flammable material without having to accept any disadvantages.
  • Wick refers to an object that is suitable for supplying liquid fuel to the combustion zone against gravity using capillary forces.
  • a wick is basically elongated. The length of a wick is therefore generally greater than its diameter or its width and depth.
  • a wick can be completely or partially spun, braided or woven.
  • the fibers of a wick can run along the length of the wick, i.e. not across the length of the wick.
  • the fibers of a wick can be woven and/or partially glued in order to hold the fibers inside.
  • a wick is generally not suitable for being placed on a front side. A wick would then usually fall over or even collapse, similar to what would happen with a piece of string.
  • a wick can be made of plant, animal, chemical or other fibers.
  • a wick can be made of hemp, coconut, sisal, cotton, glass, metal and/or aramid.
  • the wick can transport liquid upwards better than the sponge. This is basically because the fibers of the wick run from bottom to top when assembled.
  • the diameter or width and depth of a wick are smaller than the diameter or width and depth of the sponge.
  • a plurality of wicks can therefore border the underside of the sponge. For example, theoretically at least five or at least ten or at least 15 wicks can therefore border the underside of the sponge. In practice, at least two or three wicks and/or no more than six wicks border the underside of the sponge in order to supply an appropriate amount of fuel to the sponge.
  • the wicks are preferably spaced evenly between each other in order to supply the sponge with fuel as evenly as possible.
  • Several wicks are particularly needed if the fuel container is relatively high and, for example, has a height of at least 70 mm. If the fuel container is not very high, one or two wicks may be sufficient.
  • the fibers of the wick are made of fireproof, i.e. non-flammable materials.
  • Refractory materials are materials that can withstand the flames of a table fire, in particular they neither burn nor melt, such as glass, minerals, metal or aramid. Materials with an operating temperature of over 300°C or over 400°C are particularly refractory materials.
  • wicks are preferable in order to ensure that enough fuel can be transported to the sponge regardless of the fill level. At least two or at least four wicks are therefore preferable. The more wicks there are, the deeper the fuel container can be without this having a negative effect on the flame pattern.
  • wicks can protrude upwards from the adjacent area of the cover. This can help ensure that the protruding ends are pressed into the sponge when installed.
  • the upper end of a wick may be firmly attached to the sponge so that the wick can transport fuel into the sponge.
  • a weight can be attached to the bottom of a wick to ensure that the wick reaches as far as possible towards the bottom of the fuel container.
  • the weight can be made of metal or ceramic.
  • the weight can be a sleeve that surrounds the wick.
  • the sleeve can be firmly attached to the wick, for example, by means of a press fit.
  • a sleeve can also improve the stability of the wick.
  • a band or wire ring wrapped around a section of the wick can also be sufficient to improve stability.
  • the top of the fuel tank can be mostly closed by a cover.
  • the cover can be made of metal.
  • the cover can be connected to the side wall of the fuel tank in a liquid-tight manner.
  • the cover can be connected to the side wall by a material bond.
  • the cover can be glued, soldered or welded to the side wall.
  • the cover may comprise a tub-shaped holder for the sponge.
  • the sponge may be inserted into the holder and held in place.
  • the shape and dimensions of the holder may be adapted to the shape and dimensions of the sponge.
  • the sponge then borders laterally on the side wall of the tub-shaped holder.
  • the length and width of the trough-shaped holder and the length and width of the sponge can be essentially the same.
  • the height of the sponge can be smaller than the height of the trough-shaped holder so that the sponge and the fuel contained therein can be held particularly reliably within the trough-shaped holder. This can also make it easier to refill the fuel container with liquid fuel.
  • the tub-shaped holder and/or the sponge can be circular when viewed from above.
  • the inner diameter of the tub-shaped holder and the outer diameter of the sponge can be essentially the same. This information refers to the dry state of the sponge. If the sponge absorbs liquid, this can lead to an increase in volume. The sponge can then compensate for tolerances and conform to the shape of the tub-shaped holder.
  • the sponge can therefore be designed such that its volume depends on whether the sponge is dry or has absorbed liquid.
  • the cover can be stepped from the outside to the inside to provide a trough-shaped receptacle.
  • the combustion zone then advantageously does not extend over the entire top of the fuel container.
  • a flat, liquid-permeable component can be inserted above the sponge to hold the sponge within the tub-shaped holder.
  • This liquid-permeable component can be a grid, a sieve such as a perforated sheet, a mesh or a braid.
  • the sponge can then be held within the tub-shaped holder by the grid, the sieve, the mesh or the braid.
  • the grid or sieve can be made of ceramic or metal, for example.
  • the mesh or braid can be made of metal or glass fibers, for example.
  • the lattice is a geometric structure of intersecting lines or bars that can form a regular pattern of evenly arranged, usually square or rectangular cells.
  • a sieve is a flat, perforated component that can be used to separate solids from liquids or other solids. It can have a flat Frame covered, for example, with a fine-mesh grid or a perforated sheet or mesh.
  • a perforated sheet is a metal sheet that has holes drilled through it.
  • the holes may be arranged in a regular pattern.
  • the holes may be circular, square, rectangular or other shapes and may have different diameters or spacing.
  • the holes may also be punched in different patterns and arrangements to create a variety of effects.
  • a knitted fabric is made from interwoven threads, cords, ribbons or other flexible materials.
  • a braid is a fabric or net made of interwoven threads, cords, ribbons or other flexible materials.
  • the braid is made by crossing horizontal and vertical threads, with the threads usually running alternately over and under each other to create a strong, flexible and resilient material.
  • the braid can be made of metal or glass fibers.
  • the liquid-permeable component can be attached to the cover above the sponge in order to hold the sponge particularly reliably.
  • the liquid-permeable component can be connected to the cover in a material-locking, form-fitting or force-locking manner.
  • a snap-in connection is preferred, through which the liquid-permeable component is attached to the cover.
  • a snap-in connection is a form-fitting connection between the liquid-permeable component and the cover, which is created by snapping or inserting. The connection can be released again, for example, by turning or pressing. For safety reasons, however, a snap-in connection is preferred, which can only be released again by destroying it or using tools.
  • the liquid-permeable component can comprise one or more elastically deformable tabs, which can be part of the snap-in connection.
  • the one or more tabs can be arranged along an edge of the liquid-permeable component.
  • the one or more tabs can protrude obliquely outwards from the edge.
  • the cover can comprise an opening with a diameter or dimensions that are slightly smaller than the diameter or dimensions of the edge of the liquid-permeable component.
  • the liquid-permeable component can then be inserted into the opening such that the one or more tabs are first bent inwards in order to finally snap into place behind the edge of the opening.
  • the A liquid-permeable component can only be removed by destruction or by using the tool.
  • the liquid-permeable component can be inserted into the trough-shaped receptacle.
  • the trough-shaped receptacle can comprise an opening with an edge behind which the one or more tabs can snap into place.
  • the trough-shaped holder can be made from exactly two parts in order to be able to produce an opening with the aforementioned edge with little technical effort.
  • the two parts can be connected to one another in a material-locking manner, for example by soldering or welding.
  • the two parts can be connected to one another by a screw or rivet connection.
  • the trough-shaped holder can also be made from one piece, i.e. in one work step.
  • the trough-shaped holder can be made from more than two parts.
  • the cover can have an opening for each wick through which the wick can pass.
  • An opening can be located in the base of the trough-shaped holder.
  • the diameter or cross-section of the opening can be adapted to the diameter or cross-section of the wick.
  • a wick can be provided with a holder on its top, by means of which a wick can be held on the cover.
  • the holder can be a sleeve with an annular widening.
  • the annular widening can rest on the top of the cover in order to hold the wick.
  • the annular widening can, for example, rest on the bottom of the trough-shaped holder.
  • a weight can be attached to the lower end of a wick so that the wick reliably reaches as far as possible towards the bottom of the fuel container.
  • the weight can be made of metal or ceramic.
  • the weight can be a sleeve that surrounds the wick. The sleeve can be firmly connected to the wick or held in place by a press fit, for example.
  • Wick and sponge can be alternatively or additionally arranged in such a way that a wick is pushed towards the bottom by the sponge.
  • a sleeve can widen at one end in a funnel shape to allow a wick to be reliably and easily pushed into the sleeve and then pulled through a suitable distance.
  • the inner diameter or cross-section of the sleeve can be slightly smaller than the outer diameter or cross-section of the wick so that the sleeve can be connected to the wick by a clamping effect.
  • the trough-shaped receptacle comprises a base and a surrounding side wall.
  • One or more refill openings for refilling the fuel tank with liquid fuel can be provided in the base and/or in the side wall.
  • the one or more refill openings can be elongated holes.
  • the one or more refill openings can be circular. It is preferable that refill openings for refilling are present in both the side wall and the base in order to be able to refill particularly safely.
  • the holes for refilling are not closed by wicks or other elements.
  • the one or more refill openings are preferably covered by the sponge for safety reasons. The provision of a lid for closing a refill opening for safety reasons can then advantageously be dispensed with.
  • the distance between the surface of the sponge and a refill opening where the liquid flows into the container can be as short as possible so that the flow resistance is minimal.
  • the distance can be less than 5 mm or less than 3 mm, for example.
  • the distance can be greater than 1 mm, for example.
  • the fuel container can have supports for an outer shell on the outer edge. There are basically three supports, which can be equally spaced from each other.
  • the outer shell can be placed on the supports, which can then surround a flame.
  • the outer shell can be a cylinder, for example if the cross-section of the fuel container is circular.
  • the cross-section of the outer shell can also be square, for example if the cross-section of the fuel container is square.
  • the outer shell can be made of glass so that the flame is visible.
  • the outer shell can also be made of a grid or perforated sheet so that the flame is at least partially visible.
  • the outer shell can then be made of another non-flammable material such as metal or ceramic. In this way, a table fire can be created with very little technical effort, i.e. a small fireplace that can be placed on a table to create a cozy atmosphere or to heat a room. Such a table fire can be used both indoors and outdoors.
  • the fuel container can also be designed for a table fire, which can be used to create a swirling flame, as is the case with the Publication DE 20 2019 005 839 U1.
  • the table fire is called a fire column in this publication.
  • a swirl flame is a flame that is set in rotation by air and is therefore spiral-shaped.
  • Such a table fire can comprise air guide elements that can be surrounded by an outer shell.
  • the air guide elements can be arranged between an outer shell and a base.
  • the air guide elements can run in a spiral shape so that air flowing in from below can be set in rotation to create a swirl flame.
  • Outer shell refers to the outer shell of the table fire. This outer shell is open at the top and bottom, but forms a barrier that is at least predominantly closed over the entire area of the flame to prevent horizontal exchange with the air outside the shell. The outer shell cannot have any openings over the area of the flame through which air can flow. The outer shell then forms a completely closed barrier horizontally.
  • the shell can be transparent or translucent or can include transparent or translucent sections.
  • the outer shell is basically made from one piece and is manufactured in one step to keep the number of parts to a minimum.
  • the outer shell can be made of several parts. The outer shell can then be made of different materials. At the level of the flame, the outer shell can be made of glass, for example, so that the flame is visible. Below that, the outer shell can be made of metal, for example.
  • An outer shell can be designed as a round glass cylinder or a metal cylinder with glazed openings. In addition, almost any other shape is possible, whether square, bulbous, conical, concave, stretched, compressed, symmetrical, asymmetrical or irregular. However, a circular diameter is preferable if a particularly uniform flame pattern is to be created.
  • the outer shell can be made of any non-flammable material or material mix, including transparent, ground, tinted or colored glass, smoked glass, metal or ceramic.
  • Base refers to a block located in the lower part of the table fire, which is usually used for setting up, holding the fuel container and/or as a holder for the outer shell.
  • the base can be designed as a stand or include a stand, a ground spike or another fastening option.
  • the base can be connected to a base or a ground spike.
  • the base can be made from one piece and then manufactured in one step to keep the number of parts to a minimum.
  • the base can also be made from several parts that are put together to form the base.
  • the base may be suitable for complete or partial accommodation or for direct or indirect connection of the fuel tank.
  • the majority of the outer shell can be positioned above the base.
  • a lower end of the outer shell can partially or completely enclose the base at the sides.
  • Air guide element refers to a structural element for deflecting an air flow thermally generated by the flame, which causes the flame to rotate. This creates a swirling flame.
  • the swirling flame resembles the shape of a spiral.
  • an air guide element can be designed as a straight or curved, closed or half-open channel.
  • An air guide element can comprise a flat or curved surface.
  • An air guide element can be made from sheet metal.
  • the air guide element can interact with other elements of the table fire to guide air in such a way that a swirling flame can form.
  • the other element can be the outer shell and/or the base.
  • an air guide element can be integrated into the base or the outer shell or attached to them. When set up, the air guide element preferably forms an acute angle with the horizontal. It is therefore only slightly tilted relative to the horizontal.
  • the fuel tank can have a maximum diameter of 400 mm or 300 mm or 200 mm or 100 mm.
  • the fuel tank can have a minimum diameter of 30 mm or 40 mm or 50 mm. This can apply accordingly to the width and depth if the fuel tank is not circular when viewed from above.
  • the fuel tank can have a minimum height of 40 mm or 50 mm.
  • the fuel tank can have a maximum height of 200 mm or 100 mm.
  • the sponge can be a maximum of 50 mm or a maximum of 40 mm or a maximum of 30 mm or a maximum of 20 mm high.
  • the sponge can be at least 5 mm or at least 10 mm high.
  • the diameter or depth and width of the sponge can be at least 20 mm or at least 40 mm or at least 50 mm.
  • the diameter or depth and width of the sponge can be no more than 150 mm or no more than 100 mm or no more than 70 mm.
  • the one or more wicks can be at least 4 cm or at least 6 cm long.
  • the one or more wicks can be a maximum of 20 cm long or a maximum of 15 cm long.
  • the diameter or depth and width of the one or more wicks can be at least 3 mm or 5 mm.
  • the diameter or depth and width of the one or more wicks can be no more than 20 mm or no more than 15 mm or no more than 10 mm.
  • a table fire with a fuel container can be a maximum of 150 cm or a maximum of 100 cm or a maximum of 80 cm high.
  • a table fire with a fuel container can be a minimum of 20 cm or a minimum of 30 cm or a minimum of 50 cm high.
  • An alcohol such as ethanol or bioethanol can be used as fuel.
  • the flash point of the fuel is advantageously at least 50°C or at least 80°C or at least 100°C.
  • the flash point of the fuel is advantageously not more than 150°C or not more than 120°C.
  • the fuel used can therefore be, for example, ethylene glycol or propylene glycol or a mixture of ethanol and propylene glycol and/or ethylene glycol.
  • the flash point is then approximately 105°C.
  • the flash point of a substance is the lowest temperature at which an ignitable vapour-air mixture can form above a substance.
  • a fuel container can comprise one or more ring-shaped disks which can, for example, be placed loosely on the top of the fuel container.
  • the one or more ring-shaped disks have an opening which, in the case of several ring-shaped disks, can be of different sizes.
  • a ring-shaped disk can be placed above a flat, liquid-permeable component. There is then a gap between the ring-shaped disk and the flat, liquid-permeable component. This means that the ring-shaped disk remains relatively cool and contributes little or nothing to the evaporation of the fuel.
  • the height of a flame can be changed by placing a ring-shaped disk on top. If several ring-shaped disks are present, flames of different heights can be set. If a ring-shaped disk is arranged in such a way that it remains relatively cool, the height of the flame can be permanently reduced. The burning time can be extended accordingly.
  • Each annular disc may comprise a protruding collar by which the position of a disc can be fixed, for example.
  • the collar may be located on the inside of an annular disc. If the ring-shaped disc has an inner collar that protrudes downwards when in place, the collar can further improve the limitation of the height of a flame. The collar can then be arranged in such a way that it does not support fixation.
  • Figure 1 shows a table fire.
  • Figure 2 shows a section through a fuel tank.
  • Figure 3 shows a section through the fuel tank from Figure 2 in a view rotated by 90°.
  • Figure 4 shows a top view of the fuel tank from Figure 2.
  • Figure 5 shows a perspective view of the individual parts of the fuel tank from Figure 2.
  • Figure 6 shows a perspective view of the fuel tank of Figure 2.
  • Figure 7 shows another embodiment of a fuel tank.
  • Figure 8 shows a table fire with the fuel container from Figure 7.
  • Figure 9 shows the table fire from Figure 8 in cross section.
  • Figure 10 shows a further embodiment of a fuel tank in section.
  • Figure 11 shows another embodiment of a table fire.
  • Figure 12 shows parts of another embodiment of a fuel tank.
  • Figure 13 shows another embodiment of a fuel tank with the parts from Figure 12.
  • Figure 14 shows another embodiment of a fuel tank in section.
  • Figure 15 shows the further embodiment of Figure 14 in a perspective view.
  • Figure 16 shows a table fire with the fuel container from Figures 14 and 15.
  • Figure 17 shows parts of a fuel container with a wick bundle.
  • Figure 18 shows a fuel tank comprising the parts of Figure 17.
  • Figure 19 shows a fuel container with wires.
  • Figure 20 shows an annular disk
  • Figure 21 shows the annular disc from Figure 20 in a side view.
  • Figure 22 shows the annular disc in the applied state.
  • Figure 23 shows another embodiment of a fuel tank.
  • Figure 24 shows another embodiment of a fuel tank.
  • Figure 25 shows a section through the fuel tank of Figure 24.
  • Figure 1 shows a table fire 1 that can include an outer shell 2 and a base 3.
  • the outer shell 2 and/or the base 3 can be made in one piece.
  • the outer shell 2 and/or the base 3 can be made from two or more parts that are then joined together.
  • the base 3 can be designed such that a fuel container can be inserted into the base 3.
  • the base 3 can be the fuel container.
  • Air guide elements 4 can be attached to the outside of the base 3.
  • the air guide elements 4 can run helically around the outside of the base 3 in order to be able to generate a swirling flame.
  • the air guide elements 4 can enclose an angle with the horizontal that is smaller than 60° or smaller than 45°.
  • the air guide elements 4 can enclose an angle with the horizontal that is larger than 5° or larger than 10°.
  • the air guide elements can be band-shaped.
  • the air guiding elements 4 can be manufactured by cutting, for example by cutting sheet metal.
  • the air guiding elements 4 can be attached to the outside of the base 3 and/or to the inside of the outer shell 2, for example by means of a material bond by soldering, welding or gluing.
  • the air guiding elements 4 can be manufactured in one piece with the base 3 and/or the outer shell 2.
  • the base and air guiding elements can be a cast part, for example.
  • the outer shell 2 and the air guiding elements 4 can be manufactured in one operation, for example from glass.
  • the outer shell 2 can consist of two parts. A lower part of the outer shell 2 can be manufactured in one piece with air guiding elements 4.
  • projections 5, for example in the form of pins 5, can be attached to the base 3, which can serve as a support for the outer shell.
  • the outer shell 2 can therefore be placed or rest on the projections 5.
  • the projections 5 allow air to flow into the outer shell 2 from below.
  • the outer shell 2 can be detachably placed on the projections 5 or attached to the projections 5. be attached.
  • a three-point support is preferred for the outer shell 2.
  • the projections 5 can be connected to the base 3 as one piece, i.e. they can be manufactured in one step.
  • the projections 5 can be manufactured separately from the base 3 and then connected to the base 3.
  • the projections 5 can be connected to the base 3, for example by gluing, welding, soldering, riveting or screwing.
  • the base 3 can be connected to a plate 6 on the underside, which serves as a base.
  • the base 3 and/or the plate 6 and/or the projections 5 can consist of metal and/or stone and/or plastic and/or ceramic and/or cement and/or concrete and/or glass, for example.
  • the plate 6 can be screwed, glued, riveted, soldered or welded to the base 3.
  • the plate 6 can be connected to the base 3 as one piece, i.e. they can be manufactured in one piece.
  • the outer shell 2 can have holes or recesses on its underside through which air can flow into the outer shell 2. In particular, the holes or recesses are then arranged below the air guide elements 4.
  • the outer shell 2 can be detachably placed on the base or on the plate 6.
  • the outer shell 2 can be connected to the plate 6.
  • Figure 2 shows a fuel container 7 which comprises a base 8 and a surrounding side wall 9.
  • the base 8 forms the base of the fuel container 7.
  • the base 8 and the surrounding side wall 9 form a liquid-tight container.
  • the base 6 and/or the side wall 9 can be made of metal, glass, stone, cement, concrete or plastic, for example.
  • the base 6 and/or the side wall 9 can be made from one piece to avoid leakage problems.
  • the base 6 and/or the side wall 9 can be made from several pieces which are then joined together.
  • a sponge 15 can be present at the upper end of the fuel container 7.
  • One or more wicks 10 can be adjacent to the underside of the sponge 15. The one or more wicks 10 can reach towards the bottom of the fuel container 7, i.e. towards the floor 8. The wicks 10 can touch the floor 8 of the fuel container 7 in order to be able to transport fuel from the floor towards the sponge 15.
  • each wick 10 can extend into the sponge 15 and thereby locally depress the sponge 15.
  • a weight can be attached to the lower end of each wick 10.
  • the weight can be a sleeve 12 which surrounds the wick 10.
  • the top of the fuel tank 7 can be mostly closed by a cover 13.
  • the cover 13 can be connected to the side wall 9 of the fuel tank 7 in a liquid-tight manner.
  • the cover 13 can be offset inwards to prevent unplanned spillage of liquid fuel, for example during refilling.
  • the cover 13 is then at a distance from the upper edge of the side wall 9. This distance can be at least 1 mm or at least 2 mm. This distance can be no more than 10 mm or no more than 5 mm.
  • the cover can be bent upwards all the way around the edge.
  • the all-round bend 14 can be connected to the inner wall of the side wall 9, for example by means of a material bond, for example by soldering, welding or gluing.
  • the cover 13 can comprise a trough-shaped receptacle 16 for the sponge 15.
  • the sponge 15 can be inserted into the receptacle 16 and held in this way.
  • the shape and dimensions of the receptacle 16 can be adapted to the shape and dimensions of the sponge 15.
  • the sponge 15 then borders laterally on the side wall of the trough-shaped receptacle 16.
  • the sponge 15 can rest on the bottom of the trough-shaped receptacle 16.
  • the height of the sponge 15 can be smaller than the height of the trough-shaped holder 16 so that the sponge 15 and the fuel contained therein can be held particularly reliably within the trough-shaped holder 16. This can also make it easier to refill the fuel tank with liquid fuel.
  • the cover 13 can extend in steps from the outside to the inside in order to provide a trough-shaped receptacle 16.
  • the trough-shaped receptacle 16 then has a distance from the side wall 9.
  • a flat, liquid-permeable component can be inserted above the sponge 16 in order to hold the sponge 15 within the trough-shaped receptacle 16.
  • This liquid-permeable component can comprise a sieve 17.
  • the sponge 16 can then be held by the sieve 17 within the trough-shaped receptacle 16.
  • One or more elastically deformable tabs 18 can be attached to the edge of the sieve 17.
  • the one or more tabs 18 can protrude obliquely outwards from the edge of the sieve 17.
  • the cover 13 may comprise an opening 19 with a diameter or dimensions that are slightly smaller than the diameter or dimensions of the edge of the sieve 17.
  • the sieve 17 may then be inserted into the opening 19.
  • the one or more tabs 18 will then first be elastically bent inwards to finally to snap into place behind the edge of the opening 19.
  • the sieve 17 can then only be removed from the trough-shaped holder 16 by destroying it or using the tool.
  • the sieve 17 can therefore be inserted into the trough-shaped holder and thereby snapped into place.
  • the one or more tabs 18 can then snap into place behind the edge of the opening 19.
  • the trough-shaped receptacle 16 can, as shown in Figure 2, be made of exactly two parts in order to be able to produce an opening 19 with the aforementioned edge with little technical effort.
  • the cover 13 can have an opening 24 for each wick 10.
  • a wick 10 can pass through each opening 24.
  • Each opening 24 can be located in the base of the trough-shaped receptacle 16.
  • the diameter or cross-section of the opening 24 can be adapted to the diameter or cross-section of the associated wick 10.
  • a wick 10 can have a diameter of more than 1 mm or more than 2 mm or more than 3 mm.
  • a wick 10 can have a maximum diameter of 20 mm or 15 mm or 10 mm.
  • the openings 24 then have a diameter similar to that of the wicks 10. Exactly three wicks 10 or exactly four wicks 10 can be provided.
  • the wicks 10 can be equidistant from one another.
  • a wick 10 can be provided with a holder on its upper side, by means of which a wick 10 can be held on the cover.
  • the holder can be a sleeve 20 with an annular widening 21.
  • the annular widening 21 can rest on the upper side of the base of the trough-shaped receptacle 16 in order to hold the wick 10.
  • Each sleeve 12, 20 can widen at one end in a funnel shape, i.e. open into a funnel 22 in order to be able to reliably and easily press a wick 10 into the sleeve 12, 20 and finally pull it through a suitable distance.
  • the trough-shaped receptacle 16 comprises a base and a surrounding side wall.
  • One or more refill openings 23 for refilling the fuel container 7 with liquid fuel can be provided in the base and/or in the side wall.
  • Figure 2 shows refill openings 23 that are located in the side wall of the trough-shaped receptacle 16.
  • the one or more refill openings 23 can be elongated holes.
  • the one or more refill openings are preferably only covered by the sponge 15.
  • the refill openings 23 are then not closed or covered by wicks 10 or other elements.
  • Refill openings 23 in the side wall ensure that refilling can be carried out particularly quickly.
  • Refill openings 23 in the base, i.e. in the bottom of the tub-shaped holder 16, ensure that fuel seeping through the sponge 15 can continue to flow into the fuel tank 7.
  • Figure 3 shows a section through the fuel tank 7 from Figure 2 in a view rotated by 90°. It can be seen that one or more refill openings 23 can also be present in the base of the trough-shaped receptacle 16, i.e. in the floor.
  • Figure 4 shows a top view of the fuel container from Figure 2.
  • the sieve 17 can include a "MAX" marking that can indicate the maximum fill level for fuel.
  • the cover 13 can have vent holes 25 that are very small to prevent liquid fuel from leaking out.
  • the vent holes 25 can have a diameter of less than 3 mm or less than 2 mm.
  • the vent holes 25 can have a diameter of at least 0.5 mm or at least 1 mm. To prevent a flashback into the can (ignitable ethanol/air mixture), the diameter was set to less than 1 mm.
  • Figure 5 shows a perspective view of the individual parts that can be assembled by form-fitting to form the fuel tank 7 shown in Figure 2.
  • Figure 5 shows that refill openings 23 that are present in the side wall of the trough-shaped receptacle 16 can be limited to the lower half of the side wall for safety reasons.
  • Figure 6 shows a perspective view of the fuel tank in which the individual parts from Figure 5 have been assembled.
  • Figure 7 shows a further embodiment of a fuel tank 7.
  • a lower part of the side wall 9 is separated from an upper part of the side wall, for example by a step 26.
  • the fuel tank therefore has a lower diameter that can be much wider than an upper diameter, so that the fuel tank has a low center of gravity.
  • Air guide elements 4 with an integrated support 5 for an outer shell are attached to the upper part of the side wall.
  • the support 5 can be provided by a step-shaped widening 5, for example.
  • a closable filling opening 27 for fuel can be present on the step 26. This means that liquid fuel can only be filled into the fuel tank 7 up to the level of the filling opening 27. This ensures a particularly low center of gravity.
  • the fuel tank 7 can be constructed like the fuel tank from Figures 2 to 6.
  • the fuel container 7 is shown with the outer shell 2 attached. This provides a table fire that can generate a swirling flame.
  • the outer shell 2 sits on the supports 5. A gap remains between the underside of the outer shell 2 and the step 26 through which air can flow to the air guide elements 4.
  • Figure 9 shows the table fire from Figure 8 in section. It also shows an extinguishing lid 28, which can be placed on the fuel container 7 using a cord 29 attached to the extinguishing lid so that a flame can be extinguished. Further emissions due to evaporation of the fuel are prevented. "The can does not dry out"
  • Figure 10 shows a cross-section of another embodiment of a fuel container 7.
  • the height of the fuel container 7 is smaller than its diameter in order to obtain a low center of gravity.
  • the fuel container 7 can therefore be set up particularly stably. It can have support points 30, for example three or four support points 30, on its underside in order to be able to set up the fuel container 7 stably even on an uneven surface. Adjacent support points 30 can be equally spaced. The support points 30 can be arranged near the outer circumference in order to ensure stability. Since the height of such a fuel container 7 can be relatively low, one or two wicks 10 can be sufficient to be able to supply the sponge 15 with sufficient fuel.
  • the diameter of the cover 13 or the depth and width of the cover 13 can be at least 50% or at least 80% larger than the diameter of the sponge 15 or the depth and width of the sponge 15.
  • Ventilation holes can be provided inside the trough-shaped receptacle 16 above refill openings.
  • the one or two wicks mentioned can then have a diameter of 5 to 15 mm, for example a diameter of 10 mm.
  • Figure 11 shows another embodiment of a table fire 1.
  • the fuel container 7 corresponds to the fuel container 7 from Figure 10.
  • the difference is pins 5 that protrude from the side wall 9.
  • An outer shell 2 is placed on the pins 5 and inserted into notches 32 that are present on the top of the pins. The outer shell is held securely by the notches 32.
  • An extinguishing lid 28 has a raised edge 31 that can be placed on the edge of the opening 19. The adjacent inner part of the extinguishing lid 28 then extends into the opening 19. A flame can thus be extinguished particularly quickly and reliably.
  • FIG. 12 shows a perspective view of the individual parts of another fuel container.
  • the sponge In a fuel container that includes the parts shown in Figure 12, the sponge has a passage 33 through which an upper end of a wick 10a can be guided. There is then preferably a clearance fit between the passage 33 and the wick 10a. However, there can also be a slight clearance or a press fit.
  • the wick 10a can be longer than the other wicks 10. The wick 10a can be so long that it reaches to the bottom of the fuel container on the one hand and through the sponge 15 into a raised area 34 of the sieve 17 that is adapted to it on the other.
  • This design of the fuel container is particularly well suited for the operation of a fuel with a high flash point of, for example, more than 90°C or more than 100°C, because the raised area 34 is easily accessible for a lighter flame and can therefore be easily heated to higher temperatures.
  • the elevation 34 can be cylindrical. This shape is particularly well suited for a wick. Instead of the wick, however, the sponge 15 can also extend into such an elevation 34. In particular, the elevation 34 can then also have a different shape, for example like a hill.
  • a wick 10a it is preferable for a wick 10a to extend into the elevation 34, since a wick can generally transport fuel from bottom to top through the wick better than the sponge 15.
  • a plurality of elevations 34 can also be present on the surface of the sieve 17 or another flat, liquid-permeable component in order to facilitate ignition.
  • relatively difficult-to-ignite fuels such as propylene glycol or ethylene glycol can also be used as fuel.
  • a fuel container comprising the parts shown in Figure 12 is optimized for relatively difficult to ignite fuels.
  • the side refill openings 23 can then be larger than the side refill openings 23 shown in Figure 5 without any problems.
  • the side refill openings are only half as high as the side wall of the trough-shaped receptacle 16 for safety reasons and border on the base of the trough-shaped receptacle.
  • the side refill openings 23 can therefore be arranged in the lower half of a side wall of the trough-shaped receptacle 16 for safety reasons.
  • the refill openings for refilling, which are located in the side wall of the trough-shaped receptacle 16, can therefore be limited to the lower half of the side wall, as shown in Figure 5.
  • the lateral refill openings 23 can extend at least substantially over the entire height of the side wall of the trough-shaped receptacle 16, as shown in Figure 12. A distance between two lateral refill openings 23 can also be very small without any problems compared to the case shown in Figure 5. In this case, the holes 25 can also be dispensed with.
  • Figure 13 shows a cross-section of the fuel tank 7, which is composed of the parts shown in Figure 12.
  • the fuel container shown in Figures 12 and 13 is particularly advantageous even if it does not comprise a sponge, but is operated with a fuel that has a high flash point of, for example, more than 90°C or more than 100°C and is therefore relatively difficult to ignite.
  • a plurality of wicks 10a can then be present, which extend into elevations 34 made of metal. The elevations 34 assist in igniting the relatively difficult to ignite fuel.
  • Figure 14 shows a further embodiment of a fuel tank 7 in section.
  • Figure 15 shows this fuel tank 7 in perspective.
  • the fuel tank 7 has a circumferential recess 35 into which an outer shell 2 can and should be inserted.
  • the sieve 17 can be at the same height as the maximum fill level of the fuel in the fuel tank or slightly above it. Nevertheless, a very stable container with a low center of gravity can be created. An outer shell 2 can be held very securely.
  • ventilation holes can again be provided as in Figure 4.
  • Air guiding elements 4 can be attached to the inside of the recess 35.
  • the inside of the recess 35 can protrude upwards in the side shown in Figure 14, opposite the outer wall 9 and the adjoining surface 37.
  • the air guiding elements can extend in a helical manner over the entire height of the inside of the recess 35 in order to generate a sufficient air vortex and to be able to keep an inserted outer shell sufficiently stable.
  • the outer shell can sit on projections 5 of the air guiding elements 4.
  • the fuel tank 7 can comprise an inner tank 36, which can have a distance from the side wall 9 and the floor 8 for reasons of thermal insulation, as shown.
  • the inner tank 36 can stand on the floor 8 with feet 38.
  • the Inner container 36 can hold the fuel.
  • Such a fuel container 7 provides improved protection against fuel leakage due to the inner container 36.
  • the inner container 36 can be made in one piece from a sheet metal.
  • the surrounding recess including the surface 37 can be made in one piece from a sheet metal. These two parts can be connected at the edges with a material bond and also with the side wall 9.
  • Figure 16 shows a table fire with the fuel container 7 from Figures 14 and 15.
  • Figure 17 shows parts of a fuel container which, instead of a sponge, comprises a bundle formed from a plurality of wicks 10.
  • the wicks 10 can contact one another.
  • the cross-section of the bundle can be adapted to the shape and dimensions of the opening 19.
  • the cross-section of the bundle can be adapted to the shape and dimensions of the opening 19 in such a way that the bundle is held in a force-fitting manner by the opening 19 when the bundle is inserted.
  • the bundle can reach up to a grid 17.
  • the grid 17 can be made of metal. When assembled, the grid can limit the wicks 10 at the top. When assembled, the grid 17 can be attached in a form-fitting, force-fitting and/or material-fitting manner.
  • a fuel container composed of these parts is particularly well suited for operation with fuel which has a flash point of more than 90°C or more than 100°C.
  • a fuel with a high flash point is preferable for safety reasons.
  • the metal grid can assist in igniting the fuel if the wicks 10 reach the grid 17.
  • One of the wicks may have a particularly large diameter.
  • the grid there can also be differently shaped metal elements adjacent to one or more wicks to assist with lighting.
  • it can be one or more wires. Wires can cross each other. Such elements not only assist with lighting, but also with subsequent vaporization to assist with combustion.
  • Figure 18 shows the fuel tank 7, which is composed of the parts shown in Figure 18.
  • Figure 19 shows a fuel container 7 which does not contain a sponge, but only wicks 10.
  • the wicks 10 contact wires 39 which are made of metal.
  • the wires 39 can assist in the ignition and vaporization of fuel. This makes the fuel container 7 suitable for operation with a fuel with a high flash point.
  • the fuel tank can be largely open at the top. This applies in particular if a fuel with a high flash point of, for example, at least 90°C or at least 100°C is used.
  • Figures 20 and 21 show an annular disk 40 that can be placed loosely on the top of a fuel container.
  • the annular disk 40 can rest on a cover 13.
  • the annular disk 40 can rest on an uppermost step of a cover 13 if the cover 13 is stepped, in order to remain relatively cool.
  • the annular disk 40 has an opening 41 that can be smaller than an opening 19 in a fuel container 7.
  • the diameter of the annular disk 40 can be larger than the opening 19 in order to be able to rest on the edge of the opening 19.
  • the annular disk 40 can be placed above a flat, liquid-permeable component. There is then a distance between the annular disk 40 and the flat, liquid-permeable component of the fuel container.
  • the annular disk 40 can be, for example, circular or square.
  • the opening 41 can be, for example, circular or square.
  • the opening 41 can be arranged centrally.
  • the annular disk 40 can comprise a protruding collar 42. If the collar 42 protrudes downwards in the applied state, the collar 42 can further improve the limitation of the height of a flame.
  • annular disk 40 placed on top can be secured against lateral slipping and thus fixed, for example, by the side wall 9 of the fuel tank or by a circumferential bend 14.
  • the collar 42 therefore does not have to contribute to a fixation, but can be provided solely to limit the flame height in a manner that can be adjusted.
  • Figure 22 shows a cross-section of the ring-shaped disk 40 in the applied state. There is a significant distance between the collar 42 and the side wall of the trough-shaped holder 16. The collar 42 cannot therefore protect against lateral slipping. This is achieved instead by the circumferential bend 14. Since the collar 42 extends downwards, the collar 42 helps to limit the height of the flame. The ring-shaped disk 40 including the collar 42 has a significant distance from the sieve 17.
  • Figure 23 shows an embodiment of a fuel container 7 without a sponge. The wicks 10 protrude upwards into a trough-shaped receptacle and border on crossed wires 39. This embodiment is particularly suitable for fuels with a high flash point of, for example, more than 90°C or more than 100°C.
  • Figure 24 shows an embodiment of a fuel container 7 that can be operated without a sponge.
  • the top is formed by a flat sieve or net 40, from which elevations 34 protrude upwards. Wicks 10 can reach into the elevations.
  • Such a fuel container is well suited for operation with a fuel with a high flash point.
  • Figure 25 shows the fuel container 7 of Figure 24 in section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)

Abstract

L'invention concerne un réservoir de combustible pour un foyer de table, le réservoir de combustible comprenant une éponge (15) à l'extrémité supérieure, le réservoir de combustible (7) étant conçu de telle sorte que le combustible liquide dans le récipient de combustible (7) est transporté dans l'éponge (15). Au moyen d'un tel réservoir de combustible, la flamme d'un foyer de table peut brûler de manière particulièrement uniforme à la hauteur souhaitée. L'invention concerne en outre un foyer de table.
EP24701187.7A 2023-02-23 2024-01-18 Réservoir de combustible pour un foyer de table Pending EP4669910A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102023201641 2023-02-23
DE102023201726 2023-02-24
DE102023205512.0A DE102023205512B4 (de) 2023-02-23 2023-06-14 Brennstoffbehälter für ein Tischfeuer
PCT/EP2024/051102 WO2024175276A1 (fr) 2023-02-23 2024-01-18 Réservoir de combustible pour un foyer de table

Publications (1)

Publication Number Publication Date
EP4669910A1 true EP4669910A1 (fr) 2025-12-31

Family

ID=89662000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24701187.7A Pending EP4669910A1 (fr) 2023-02-23 2024-01-18 Réservoir de combustible pour un foyer de table

Country Status (3)

Country Link
EP (1) EP4669910A1 (fr)
CN (1) CN120752475A (fr)
WO (1) WO2024175276A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1247406A (en) * 1969-04-28 1971-09-22 British Petroleum Co Wick burner
ES2603828B1 (es) * 2015-09-01 2017-12-12 Jordi GRANADOS I WEHRLE Dispositivo de combustión para antorchas
CN105627302A (zh) * 2015-12-15 2016-06-01 王鹏霄 不倒式安全酒精灯
DE202018004601U1 (de) 2018-10-04 2019-10-10 Thomas Kaiser Feuersäule
CN109404899A (zh) * 2018-12-04 2019-03-01 方思齐 一种学生实验用塑玻安全酒精灯

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CN120752475A (zh) 2025-10-03

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