WO2011004072A1 - Foyer - Google Patents

Foyer Download PDF

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Publication number
WO2011004072A1
WO2011004072A1 PCT/FI2010/050581 FI2010050581W WO2011004072A1 WO 2011004072 A1 WO2011004072 A1 WO 2011004072A1 FI 2010050581 W FI2010050581 W FI 2010050581W WO 2011004072 A1 WO2011004072 A1 WO 2011004072A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
combustion chamber
air supply
combustion
firebox
Prior art date
Application number
PCT/FI2010/050581
Other languages
English (en)
Inventor
Heikki HYYTIÄINEN
Reijo Karvinen
Original Assignee
Narvi Oy
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 Narvi Oy filed Critical Narvi Oy
Publication of WO2011004072A1 publication Critical patent/WO2011004072A1/fr

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Classifications

    • 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
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F24B5/021—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves combustion-air circulation
    • F24B5/025—Supply of secondary air for completing combustion of fuel
    • 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
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/189—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by air-handling means, i.e. of combustion-air, heated-air, or flue-gases, e.g. draught control dampers 
    • F24B1/19—Supplying combustion-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B60/00—Combustion apparatus in which the fuel burns essentially without moving
    • F23B60/02—Combustion apparatus in which the fuel burns essentially without moving with combustion air supplied through a grate
    • 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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire

Definitions

  • the invention relates to a firebox as defined in the preamble of the independent claim 1.
  • the invention also relates to a method for arranging a secondary air supply in a combustion chamber of a firebox as defined in the preamble of the independent claim 8.
  • This invention relates to wood burning appliances such as stoves and in particular to fireboxes that are of the type that are intended to be built-in into wood burning appliances.
  • the invention relates especially to the control of emission coming from a process of burning for example wood in a firebox.
  • the invention relates also to a method for arranging a secondary air supply in a combustion chamber of a firebox.
  • wood burning appliance means for example a stove or a masonry heater without excluding other appliances.
  • Stoves are used for burning wood and other similar material for example briquettes or wood logs. Burning process needs air and this air is normally called combustion air. Combustion air is usually divided into two parts, for the primary air and the secondary air.
  • the primary air is normally conveyed from underneath to a combustion chamber, for example from a grate to the lower part of the combustion chamber.
  • the primary air is the first to be introduced to the combustion chamber.
  • the secondary air is conveyed, for example through air outlets in the doors or door frames, to the lower part of the combustion chamber.
  • a problem with the traditional way of supplying secondary air to the combustion chamber is the place where the secondary air enters there.
  • the air is supplied to the front part of the combustion chamber where it is not optimally dispersed to the combustion chamber to contribute the burning process.
  • Another problem with the traditional way of supplying secondary air is the difficulty of adjusting the right amount of air into the right place.
  • EP 0 559619 Bl is known a fireplace having a combustion chamber where the combustion air is supplied in the form of primary and secondary air by a controllable throttle device.
  • the primary air is discharged to the combustion chamber through slots in the grate.
  • the secondary air is supplied from two vertical channels standing on both sides of the fireplace opening and on the front side of the combustion chamber.
  • the two vertical channels are connected with one another at their upper end by a horizontal transverse channel at the upper part of the combustion chamber.
  • the horizontal transverse channel has downward inclined exhaust ports from which the secondary air flows from the top of the combustion chamber.
  • the disadvantage of the secondary air supply in the EP 0 559619 Bl is that the secondary air is not dispersed evenly. The most of the air comes to the front side of the combustion chamber while the fire load usually is placed in the middle of the combustion chamber. The air is mostly led toward the fireplace opening in order to keep the opening clean from soot.
  • a fireplace having secondary air inlets is also known from a company by name Rath. They produce a combustion chamber called Bio Furnace 2 which has combustion chamber that has three side walls which each are built from chamotte moulded bricks. Those chamotte moulded bricks have air ducts and holes, whereby air is supplied to the fire from several sides. The holes are in vertical direction and there are several holes one upon the other.
  • the problem in the Rath version is that the combustion air holes spray air everywhere so there will not be any constant air field over the fire.
  • the other problem with it is that the secondary air coming from the combustion air nozzles has a low velocity and does not penetrate deep in the rising gases and therefore does not cause a proper turbulence over the fire.
  • the object of the invention is to provide a firebox which when used in a burning process has low emission level and good combustion efficiency.
  • the object of the invention is also to provide said firebox which is easy for one man to construct and which gives an alternative way of building up the most demanding part in a heat accumulating stove or another type of wood burning appliances.
  • the firebox according to the invention is characterized by the definitions of the independent claim 1.
  • Preferred embodiments of the method for arranging a secondary air supply in a combustion chamber of a firebox are defined in the dependent claims 9 to 13.
  • the invention is based on a new type of a firebox that is inside a heat accumulating stove or in other type of wood burning appliance.
  • the firebox is an inner element of a wood burning appliance such as a heat accumulating stove.
  • the firebox comprises preferably an ash box, walls such as side walls, a back wall and a front wall, which the walls define the space of a combustion chamber such that the walls are attached to the ash box to form a combustion chamber at a level above the ash box, and a grate for separating the combustion chamber from the ash box.
  • the firebox comprises preferably also primary air supplying means and secondary air supplying means, wherein the primary air supplying means is at least partly formed by opening in the grate.
  • the walls may comprise inner and outer walls.
  • the firebox also has preferably upper elements of the combustion chamber, which lead the exhaust gases to the smoke channels and finally to the chimney.
  • the front wall has an opening.
  • the ash box comprises an ash chamber where the ash falls from the combustion chamber.
  • the inner walls of the combustion chamber are preferably made of cast concrete and are fire-resistant.
  • the outer walls of the combustion chamber are preferably made of thin metal sheet, for example of thin steel sheet.
  • An advantage of having the outer walls of the combustion chamber made of thin metal sheet is that the structure of the firebox is tight. Therefore the combustion air does not leak and the amount of combustion air supplied to the combustion chamber can be relatively small. This is important since the combustion air has lower temperature and it is not preferred to cool down the burning process.
  • the firebox is formed of several parts so it is easy to carry to the place where the stove is to be built. A particular advantage of the firebox is that it is lightweight and easy to assemble.
  • the firebox replaces the most demanding and time consuming part of the brickwork when building up a heat accumulating stove or other type of wood burning appliance.
  • the firebox can also be made without the outer walls of the combustion chamber and then the wall structure of the firebox only comprises inner walls of the combustion chamber.
  • the invention is also based on a firebox that has at least one air supply insert arranged preferably at the side wall of the combustion chamber.
  • the air supply insert can also be arranged at the back wall or even at the front wall.
  • the combustion air is divided into primary air and secondary air. This division occurs in the ash box when the combustion air first time enters to the firebox. A part of the total air amount coming to the firebox is led through the ash box and through an ash chamber arranged in the ash box and supplied to the combustion chamber via grate openings as primary air.
  • the primary air amount is preferably approximately one third of the total combustion air amount.
  • secondary air supplying means comprise at least one air supply insert arranged in the combustion chamber, said air supply insert having a passage for receiving secondary air from the ash box and feeding secondary air through at least one combustion air nozzle arranged in the air supply insert to the combustion chamber.
  • the secondary air amount is preferably approximately two-thirds of the total combustion air amount. This secondary air is dispersed to the upper part of the combustion chamber via said combustion air nozzles in the air supply inserts.
  • the upper part of the combustion chamber is defined as being the space above the burning load which the burning load is arranged inside the combustion chamber such that it is burned there.
  • There is at least one air supply insert that comprises at least one combustion air nozzle in the upper part of the air supply insert.
  • the combustion air needed in the combustion chamber to handle the burning process comes usually from outside of the firebox.
  • the air supply inserts that supply secondary air from outside of the firebox to the combustion chamber are preferably arranged at the side walls of the firebox. At least one air supply insert is at least partly arranged in the combustion chamber.
  • the secondary air disperses to the combustion chamber through combustion air nozzles.
  • the amount and size of the combustion air nozzles are based on the requirement of air amount needed to burn the pyrolysis gases and to mix them. Within this limitation the amount and size of the combustion air nozzles can vary.
  • the air supply inserts may for example have four combustion air nozzles in each insert. In another form of the invention there can be more than four combustion air nozzles in one insert.
  • combustion air nozzles there can be less than four combustion air nozzles in one insert.
  • the diameter of a combustion air nozzle is between 10 - 20 mm, preferably 16 - 18 mm.
  • the cross- sectional area of the air supply insert where the secondary air flows, i.e. the passage for secondary air in the air supply insert, is larger than the cross-sectional area of the combustion air nozzle.
  • the main idea of the invention is that the secondary air is arranged to be fed from outside of the firebox and through a secondary air chamber arranged in the firebox and through the at least one air supply insert arranged to at least one wall of the combustion chamber and finally through a combustion air nozzle arranged in the air supply insert such that the secondary air is fed inside to the combustion chamber to a place just above the burning load with an adequate velocity so that the secondary air forms an airbed preferably throughout the combustion chamber in the level just above the burning load.
  • the air supply insert comprises an inlet in a flow communication with the ash box for receiving secondary air from the ash box and a combustion air nozzle for feeding the secondary air to the combustion chamber, and between the inlet and the combustion air nozzle a passage for feeding the secondary air through the air supply insert, wherein the air supply insert comprises a section free of combustion air nozzles between the inlet and the combustion air nozzle closest to the inlet.
  • the air supply insert comprises a lower section that is free of combustion air nozzles and an upper section that comprises at least one combustion air nozzle. The section free of combustion air nozzles extends at least 25 cm above the grate.
  • the lower edge of that combustion air nozzle which is closest to the inlet of the air supply insert, and if the air supply insert comprises many combustion air nozzles the one which is the lowest combustion air nozzle, i.e. that combustion air nozzle which is the nearest when looking upward from the grate, is preferably arranged such that the lower edge of the combustion air nozzle is on the same or almost on the same level than the top part of the burning load.
  • the combustion air nozzle arranged in the upper section of the air supply insert for supplying secondary air from the passage of the air supply insert to the combustion chamber has a smaller diameter than the cross section of the passage of the air supply insert such that the secondary air is supplied at a high velocity to the combustion chamber to form an airbed just above a burning load burning in the combustion chamber.
  • the combustion air nozzle has also smaller diameter than the secondary air inlet which is the opening for the secondary air chamber which receives secondary air from outside of the firebox through a secondary air inlet and feeds secondary air via the air supply insert to the combustion chamber through combustion air nozzle.
  • the air supply insert comprises a lower section which is free of combustion air nozzles and an upper section which comprises at least one combustion air nozzle.
  • the lower section of the air supply insert extends approximately up to 26 cm above the grate in which the burning load is arranged and in that level the at least one combustion air nozzle is arranged.
  • the important thing is that the airbed formed above the burning load mixes together with the pyrolysis gases coming from the burning process of the burning load.
  • the secondary air coming through at least one air supply insert arranged to at least one wall of the combustion chamber preferably heats up during the supply through the air supply insert.
  • the size of the air supply insert is most advantageously approximately 40 mm x 40 mm or having a diameter of 40 mm.
  • the cross section of the air supply insert is preferably such that the secondary air is capable of heating up during the movement through the air supply insert.
  • the method for arranging a secondary air supply in a combustion chamber of a firebox comprises a step for arranging an ash box comprising a secondary air chamber for receiving the secondary air from outside of the firebox through a secondary air inlet and for feeding secondary air to the air supply insert, and arranging the air supply insert in a flow communication with the ash box for receiving secondary air from the ash box, and a step for feeding secondary air from the ash box through the passage in the air supply insert to the combustion chamber via a combustion air nozzle, said combustion air nozzle having a diameter smaller than the diameter of the passage such that the secondary air comes to the combustion chamber with a high velocity such that the secondary air forms an airbed just above a burning load to be burned inside the combustion chamber.
  • the even oxidizing field above the burning and gasifying load means that the secondary air is dispersed completely across the area above the burning and gasifying load in the combustion chamber so as to form a roof- like airbed just above the burning load.
  • the air supply inserts are preferably arranged at the inner side walls such that the opposite inserts, i.e. the air supply inserts at opposite side walls of the combustion chamber, are imbricated.
  • One of the objects for this invention is to provide a stove with low emission level.
  • the requirements for low emission combustion are known as 3 T - requirements, the 3 T means temperature, time and turbulence.
  • the turbulence above the burning load improves the mixing of the combustion air with the combustible gases.
  • the turbulence is generated from mixing the secondary air coming from combustion air nozzles at both side walls and the burning process air, i.e. pyrolysis gases. That way the emission level will be low.
  • the temperature above burning load is normally over 1000 0 C and can be even as high as 1300 0 C when burning wood. When the secondary air is sprayed to the combustion chamber and over the burning and gasifying load it should not substantially reduce the temperature there since in higher temperature chemical reactions are quicker and this helps to lower the emission level.
  • Burning process needs air so that the combustion can occur and the emission level is acceptable. For that reason the burning load should be kept such that it does not collapse to the side walls during the burning process and thereby obstruct the air passage near the side walls.
  • the invention is suited for that requirement too, since the air supply inserts are arranged at the walls, preferably at the side walls, such that they protrude from the wall, i.e. the inserts and the wall are not on the same plane, but the inserts come closer to the burning load. That way the inserts hinder the burning load from collapsing to the side walls and give space for the air to flow near the side walls in the space between two inserts.
  • the air supply inserts are preferably made of metal which helps them to warm up when being near to the burning load so that the air inside the inserts warm up, too. That way the secondary air coming out from the combustion air nozzles is warmer than what it was when it arrived to the lower part of the ash box for the first time. The amount of secondary air coming from one nozzle is so little that the combustion process will not cool down remarkably although the secondary air is cooler than the pyro lysis gases.
  • the time-factor is taken into account such that the combustion chamber is insulated above the combustion air nozzles.
  • the insulation helps to keep the high temperature longer so there will be more time for chemical reactions to happen.
  • the combustion chamber below the combustion air nozzles on the other hand is built to give enough strength to the structure. The structures strength is important because the stove has to stay in form in the high temperature.
  • the air supply insert for secondary air is replaceable so that in case of wear or damage, the insert can be taken away and a new one can be put in place.
  • the air supply insert is adjustable.
  • the at least one air supply insert is preferably movable arranged to the firebox and preferably at the wall of the combustion chamber such that the height position of the combustion air nozzle of the air supply insert can be altered for creating a flow field at the desired height in the combustion chamber the desired height being just above the burning load.
  • the place where the secondary air is supplied in the combustion chamber can be adjusted according to the amount of the loading to be burned so that the flow field is preferably created just above the loading.
  • the air supply inserts are movable arranged at the walls of the combustion chamber such that the secondary air coming from the combustion air nozzle in the air supply insert create a flow field preferably just above the burning load.
  • the combustion air nozzles should be lower than when having a big amount of burning load.
  • the amount of burning load needed may vary according to need of energy for example according to the size of a room to be warmed or according to whether it is winter or summer.
  • the adjustment can be done for example by having stoppers in the lowest part of the insert and a matching point in the ash box part where the insert is attached.
  • the adjustment can also be done by having an asymmetrical bottom part in the insert.
  • Fig 1 shows a firebox of the preferred embodiment of the invention as a front view
  • Fig 2 shows the firebox in figure 1 as a side view
  • Fig 3 shows a wood burning appliance having the firebox of the preferred embodiment of the invention inside as a top view.
  • the figure 1 shows an example of a firebox 1 according to the invention.
  • This figure shows only an ash box 2, walls comprising outer side walls 3 and inner side walls 4, air supply inserts 5, a grate 6 and top elements 7 leaving back and front walls unseen.
  • the walls attached to the ash box 2 form a combustion chamber 13 at a level above the ash box 2.
  • the grate 6 separates the combustion chamber 13 from the ash box 2.
  • the ash box 2 comprises at least an ash chamber 2c for receiving ash from the combustion chamber 13 through grate 6 openings.
  • the ash box 2 is at the bottom having places for the outer side walls 3, the inner side walls 4 and the air supply inserts 5 to be removable arranged to the firebox 1.
  • the air supply inserts 5 are arranged to holes in the upper part of the ash box 2 so that they have an airway connection between the ash box 2 and the air supply insert 5.
  • the grate 6 is placed above the ash box 2 so that the ash can fall down from the combustion chamber 13 to the ash box 2 through the grate 6 openings.
  • the ash box 2 is divided into two separate parts for the combustion air to go through, but it is not shown in this figure.
  • the figure 2 shows the same example of the firebox 1 as in figure 1 but in a side view.
  • the foundation where building of the firebox 1 is started is the ash box 2.
  • the ash box 2 is the inlet for combustion air to come into the stove.
  • the combustion air is divided already during the arrival to the ash box 2 for primary air and secondary air. This is achieved by dividing the inlet for a primary air inlet 2a and a secondary air inlet 2b.
  • the ash box 2 is divided into two separate parts where the one, preferably lower, part is for the secondary air to go through to the air supply inserts 5 and the other, preferably upper, part is for the primary air to go through to the openings in the grate 6 to the combustion chamber.
  • the upper part of the ash box 1 comprises an ash chamber 2c which also collects the ash coming through the grate 6.
  • the other separate part of the ash box 2 where the secondary air is arranged to be fed is called a secondary air chamber 2d.
  • the secondary air chamber 2d receives secondary air from outside of the firebox 1 through a secondary air inlet 2b and feeds secondary air to the air supply insert 5.
  • the amount of combustion air coming through the primary air inlet 2a i.e. the amount of primary air
  • the amount of combustion air coming through the secondary air inlet 2b i.e. the amount of the secondary air, is then for example preferably about two thirds of the total combustion air amount.
  • the primary air coming through the primary air inlet 2a goes through the upper part of the ash box 2 called ash chamber 2c and through the openings in the grate 6 to the combustion chamber 13.
  • the combustion chamber 13 is the place which borders on the side walls 4, on the back wall 8 and on the front wall 9 and borders down on the grate 6 and up on the smoke channels.
  • the secondary air coming through the secondary air inlet 2b goes through the lower part of the ash box, i.e. a separate section in the ash box 2 called a secondary air chamber 2d, and goes to the air supply inserts 5.
  • the air supply inserts 5 are preferably hollow pipe-like, more preferably square shaped, pieces that have opening on the bottom so that the secondary air can come from the secondary air chamber 2d to the air supply insert 5.
  • the top of the insert 5 is closed and the air is dispersed from the air supply insert 5 preferably through one or more holes, called combustion air nozzles 10.
  • Other way of dispersing the secondary air from the air supply insert 5 is for example through a separate pipe arranged to the air supply insert 5 or a separate nozzle that can be for example adjusted to different angles.
  • the ash box 2 which is preferably made of one piece, so it will be airtight.
  • the ash box 2 has a section for the secondary air which is a separate section from the primary air section.
  • the secondary air section is called a secondary air chamber 2d and the primary air section is called an ash chamber 2c.
  • On the upper side of the ash box 2 are preferably small holes for the air supply inserts 5 to put on and a big hole on which the grate will be put over.
  • the big opening, i.e. the ash chamber 2c, in the ash box 2 collects the ash falling from the grate 6.
  • the front wall with an opening to the combustion chamber 13, the outer side walls 3 and the back wall will be arranged to the ash box 2.
  • the inner walls 4 with places for receiving air supply inserts 5 are placed next to the outer walls 3 and the air supply inserts 5 are arranged to their places.
  • the inner walls 4 have preferably formations for receiving the air supply inserts 5.
  • the back and front walls may have same kind of inner walls with air supply inserts.
  • the grate 6 is also put to its place and top elements 7 are finally attached on top side of the firebox 1.
  • the amount and size of combustion air nozzles 10 in air supply inserts 5 depend on the need of the secondary air.
  • the diameter of a nozzle is preferably 10 - 20mm, and most preferably 16 - 18mm.
  • the cross-sectional area of the insert should be more than the cross-sectional area of all the nozzles in that insert.
  • the figure 3 shows a wood burning appliance 11, such as masonry heater, having a firebox 1 inside.
  • the firebox 1 is in its assembled state having outer side walls 3, back wall 8 and front wall (not shown in the figure) attached to the ash box 2.
  • the inner walls 4 are attached to the outer side walls 3.
  • the back wall 8 and the front wall may also include outer and inner walls.
  • the air supply inserts 5 are attached to the inner side walls 4 and placed to their places, preferably to holes, in the ash box 2.
  • the back wall 8 and the front wall may also contain air supply inserts, but in this embodiment only side walls have inserts 5.
  • the combustion chamber 13 has on the bottom a grate 6 which is not shown in the figure.
  • the combustion chamber opening 12 has preferably but not necessarily a door with a glass.
  • the outer side walls 3 are covered from outside of the firebox 1 with inner brick lining 14 which accumulates the heath produced in the combustion process.
  • inner brick lining 14 which accumulates the heath produced in the combustion process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

L'invention porte sur un foyer (1) du type qui est destiné à être incorporé dans un appareil de combustion de bois (11), lequel foyer comprend une boîte à cendre (2), des parois (3, 4) fixées à la boîte à cendre (2) pour former une chambre de combustion (13) à un niveau au-dessus de la boîte à cendre (2), une grille (6) pour séparer la chambre de combustion (13) de la boîte à cendre (2), des moyens d'alimentation en air primaires et des moyens d'alimentation en air secondaires. Les moyens d'alimentation en air secondaires comprennent au moins un insert d'alimentation en air (5) agencé dans la chambre de combustion (13), ledit insert d'alimentation en air (5) ayant un passage pour recevoir de l'air secondaire provenant de la boîte à cendre (2) et délivrer l'air secondaire à travers au moins une buse d'air de combustion (10) agencée dans l'insert d'alimentation en air (5) vers la chambre de combustion (13). L'invention porte également sur un procédé pour configurer une alimentation en air secondaire dans une chambre de combustion (13) d'un foyer (1). (Fig. 2)
PCT/FI2010/050581 2009-07-10 2010-07-05 Foyer WO2011004072A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20095782A FI20095782A (fi) 2009-07-10 2009-07-10 Tulipesä
FI20095782 2009-07-10

Publications (1)

Publication Number Publication Date
WO2011004072A1 true WO2011004072A1 (fr) 2011-01-13

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Application Number Title Priority Date Filing Date
PCT/FI2010/050581 WO2011004072A1 (fr) 2009-07-10 2010-07-05 Foyer

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FI (1) FI20095782A (fr)
WO (1) WO2011004072A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155747A (zh) * 2011-04-11 2011-08-17 杨秀海 双门双控二次进风完全燃烧技术
EP3199872A1 (fr) * 2016-01-29 2017-08-02 PISLA Oy Construction de châssis pour un foyer en maçonnerie, kit de montage correspondant, agencement et cheminée
WO2020234514A1 (fr) * 2019-05-23 2020-11-26 Npi-Engineering Oy Caisson d'air secondaire pour cheminée
EP4215048A1 (fr) * 2022-01-25 2023-07-26 NunnaUuni Oy Four de cuisson

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20011685U1 (de) * 2000-07-05 2001-02-22 Bergholz, Günter, 44269 Dortmund Kamineinsatz für häusliche Feuerstätten
FI7905U1 (fi) * 2007-09-11 2008-06-25 V S Muuraus Tulisija pellettien polttamiseksi
WO2009003483A2 (fr) * 2007-07-04 2009-01-08 Larsen Joergen Frederik Conduite d'air située dans une chaudière

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20011685U1 (de) * 2000-07-05 2001-02-22 Bergholz, Günter, 44269 Dortmund Kamineinsatz für häusliche Feuerstätten
WO2009003483A2 (fr) * 2007-07-04 2009-01-08 Larsen Joergen Frederik Conduite d'air située dans une chaudière
FI7905U1 (fi) * 2007-09-11 2008-06-25 V S Muuraus Tulisija pellettien polttamiseksi

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155747A (zh) * 2011-04-11 2011-08-17 杨秀海 双门双控二次进风完全燃烧技术
EP3199872A1 (fr) * 2016-01-29 2017-08-02 PISLA Oy Construction de châssis pour un foyer en maçonnerie, kit de montage correspondant, agencement et cheminée
WO2020234514A1 (fr) * 2019-05-23 2020-11-26 Npi-Engineering Oy Caisson d'air secondaire pour cheminée
EP4215048A1 (fr) * 2022-01-25 2023-07-26 NunnaUuni Oy Four de cuisson

Also Published As

Publication number Publication date
FI20095782A (fi) 2011-01-11
FI20095782A0 (fi) 2009-07-10

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