EP3839339A1 - Grille de four pour combustible solide - Google Patents

Grille de four pour combustible solide Download PDF

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Publication number
EP3839339A1
EP3839339A1 EP20203339.5A EP20203339A EP3839339A1 EP 3839339 A1 EP3839339 A1 EP 3839339A1 EP 20203339 A EP20203339 A EP 20203339A EP 3839339 A1 EP3839339 A1 EP 3839339A1
Authority
EP
European Patent Office
Prior art keywords
container
brazier
support
shaped
bottom portion
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
EP20203339.5A
Other languages
German (de)
English (en)
Inventor
Fabio Rossi
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.)
THERMOROSSI SpA
Original Assignee
THERMOROSSI SpA
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 THERMOROSSI SpA filed Critical THERMOROSSI SpA
Publication of EP3839339A1 publication Critical patent/EP3839339A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • F23B40/06—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface
    • F23B40/08—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface into pot- or trough-shaped grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H15/00—Cleaning arrangements for grates; Moving fuel along grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—Closed stoves
    • F24B1/024—Closed stoves for pulverulent fuels
    • 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
    • F24B13/00—Details solely applicable to stoves or ranges burning solid fuels 
    • F24B13/02—Arrangement or mountings of fire-grate assemblies; Arrangement or mountings of linings for fire-boxes, e.g. fire-backs 

Definitions

  • the present invention relates to a brazier for stoves powered by solid fuel.
  • the stoves powered by solid fuels in particular pellets but also wood chips, cereals, and plant discards in general, comprise a stove body, which houses a burner.
  • fuel storage space is provided for, which can be situated outside or within the same stove body: the fuel, picked up from the aforesaid space usually by a screw conveyor, or the like, is gradually fed inside the burner.
  • the burner of the stove comprises a fuel collection tray, more commonly known as brazier, provided with a perforated bottom, through which the comburent air enters into the combustion chamber.
  • the brazier usually has square, rectangular or cylindrical shape, and is equipped with vertical walls that delimit the brazier, and serve for containing the ashes.
  • the brazier comprises a substantially rectangular body provided, at the center line, with a portion distinguished by a concavity that is directed upward during use.
  • Such portion is equipped with through holes at the entire extension thereof, through which the primary air flows that is necessary for the combustion.
  • the aforesaid substantially rectangular body is normally attained by means of a casting of cast iron, and has a rather complex shape: indeed, it is provided with all the necessary perforations and channels for the passage of the combustion air, as well as with lateral edges and abutments shaped for the correct installation within the stove body.
  • the brazier described in this document comprises lateral elements, arranged at the sides of the concave portion, and made of metal sheet; such lateral elements are substantially V-shaped, with apex directed upward, and are fixed to the substantially rectangular body by means of screws.
  • Such lateral elements are provided with holes at the face thereof directed towards the concave portion, and in turn they surmount the lateral portions of the substantially rectangular body, affected with further through holes.
  • V-shaped lateral elements act as lateral distributor elements for the secondary air, necessary for the combustion process.
  • this brazier of known type is rather structurally complex and expensive, since it requires various components for the assembly thereof.
  • This structural complexity also involves a certain difficulty and diligence in executing the operations of cleaning and maintenance.
  • the brazier described in the aforesaid document EP 2 226 558 B1 comprises a motorized spatula, actuated to carry out an oscillating movement, which has the function of keeping free the holes of the central concave portion of the brazier.
  • the aforesaid spatula which has a substantially double elbow shape, comprises two opposite terminal pins, which are rotatably supported at suitable seats, provided along two lateral walls of the substantially rectangular body of the brazier.
  • the spatula is then blocked in the operating position by further walls (these also made, for example, of cast iron), which surmount the substantially rectangular element.
  • the spatula is not normally removable, except by disassembly of the entire brazier, with clear waste of time: indeed, the substitution of the spatula requires the disassembly of the stud bolts that fix the assembly consisting of burner, spatula and support heads.
  • the technical task of the present invention is therefore that of improving the state of the art in the field of stoves powered by solid fuel.
  • one object of the present invention is to overcome the previously lamented drawbacks.
  • Another object of the present invention is to implement a brazier for stoves powered by solid fuel, structurally simpler than the braziers of known type.
  • Still another object of the present invention is to attain a brazier for stoves powered by solid fuel, structurally less expensive than the braziers of known type.
  • a further object of the present invention is to provide a brazier for stoves powered by solid fuel, more practical and functional from the standpoint of the use.
  • Another object of the present invention is to implement a brazier for stoves powered by solid fuel, more practical and functional also from the standpoint of maintenance and cleaning.
  • the brazier comprises a container configured to contain the fuel, provided with a bottom portion that is substantially concave and affected with a distribution of through holes.
  • the brazier also comprises a support, configured to house the container.
  • the container and the support both consisting of respective portions made of metal sheet, suitably cut and/or bent, or alternatively stamped, mutually connected in a permanent manner by welding.
  • the container and the support both consist of respective portions made of metal sheet, suitably stamped (e.g. drawn).
  • the solution is also more practical, functional, light and manageable with regard to the cleaning and maintenance, also with particular reference to the possible substitution of the spatula, which can be directly carried out by the user without the specialized intervention of technicians of the field.
  • S overall indicates a stove powered by solid fuel, comprising a brazier according to the present invention, the latter indicated overall with 1.
  • the stove S comprises a stove body 2; the stove body 2 defines, at its own interior, a combustion chamber 3 which houses the brazier 1.
  • the brazier 1 is associated with a drawer 4 for collecting the ashes.
  • the stove S also comprises means 5 for transferring the pellet from a storage space in which it is collected (not represented in the figures, for the sake of simplicity) towards the brazier 1.
  • the transfer means 5 can comprise, for example, an Archimedes' screw 6, or the like.
  • the transfer means 5 communicate with an opening 7 for discharging the pellet within the combustion chamber 3, and hence within the brazier 1.
  • Vents 8 are additionally provided for.
  • the ventilation means 8 provide to send the comburent air within the combustion chamber 3, through feed pipes.
  • the stove S also comprises ignition means 9, for triggering the combustion;
  • the ignition means 9 can comprise, for example, a glow plug, or the like, placed in communication with the combustion chamber 8 (in particular, at the brazier 1, as better described herein below).
  • the brazier 1 comprises a container 10, configured to contain the fuel.
  • the brazier 1 comprises a support 11.
  • the support 11 is configured to house the aforesaid container 10.
  • the container 10 and the support 11 both consist of respective portions made of metal sheet, suitably cut and/or bent, or alternatively stamped, and mutually connected in a permanent manner by welding.
  • the container 10 and the support 11 both consist of respective portions made of metal sheet, suitably stamped (e.g. drawn).
  • the support 11 has substantially box-like shape (open at the side that is the upper side during use), so as to contain the container 10.
  • the support 11 in turn comprises a first portion 12 of bent metal sheet and a second portion 13 of bent metal sheet, mutually connected in a permanent manner by means of welding.
  • the first portion 12 is substantially U-shaped; this comprises, more particularly, a bottom 14, a front wall 15 and a rear wall 16 (opposite the front wall 15).
  • the rear wall 16 of the first portion 12 comprises, along the respective lateral edges and at the top, two opposite first teeth 17.
  • the rear wall 16 of the first portion 12 comprises a first window 18; the first window 18 is circular, or substantially circular.
  • the rear wall 16 also comprises a second window 19; the second window 19 is rectangular, or substantially rectangular.
  • the second window 19 is situated below the first window 17, with reference to the use position of the brazier 1.
  • the first window 18 and the second window 19 can be used for conveying air into the brazier 1, and/or for placing the ignition means 9 in communication with the brazier 1.
  • the front wall 15 of the first portion 12 comprises, along the upper edge thereof, a strip 20; the strip 20 has width greater than that of the front wall 15; in addition, the strip 20 lies on a plane tilted by a certain angle with respect to that on which the aforesaid front wall 15 lies.
  • the second portion 13 is also substantially U-shaped; the second portion 13 comprises a front wall 21, and two lateral walls 22, 23.
  • Each of the lateral walls 22, 23 comprises, along the upper edge 24 thereof, a second tooth 25 and a third tooth 26 ( figure 9 ).
  • the second tooth 25 and the third tooth 26 are provided at the ends of the upper edge 24 of each lateral wall 22, 23.
  • the third tooth 26 has greater width than the second tooth 25, and comprises a recess 27.
  • first portion 12 and the second portion 13 - as shown, for example, in figure 8 - are oriented according to respective planes that are perpendicular to each other (i.e. with reference to the use position, the first portion 12 is an upright "U", while the second portion 13 is a laid-down "U").
  • first teeth 17 of the first portion 12 are engaged within the respective recesses 27 of the lateral walls 22, 23 of the second portion 13; in addition, the ends of the strip 20 are engaged between the second teeth 25 of the lateral walls 22, 23 and the front wall 21, which projects above the lateral walls 22, 23.
  • This mode of permanent joining between the two portions 12, 13 allows obtaining the abovementioned shape of a box that is open on the upper part.
  • the first portion 12 and the second portion 13 of the support 11 are both attained starting from portions, or sheets, of metal sheet (e.g. of stainless steel) that is bent and cut (e.g. by means of laser cutting, or even by means of stamping or cutting).
  • metal sheet e.g. of stainless steel
  • the permanent joining of the first portion 12 with the second portion 13 is obtained by means of welding.
  • the container 10 comprises a bottom portion 28, a front portion 29 and a rear portion 30, mutually connected so as to achieve a cradle-like conformation, suitable for containing the solid fuel.
  • the bottom portion 28 is curved; more in detail, when observed in section (see for example figure 13 ) this is substantially curved according to a circumference arc. During use, the concavity of the bottom portion 28 is directed upward.
  • bottom portion 28 has smaller width at the center line, and greater width at the opposite ends thereof.
  • the lateral edges 31 of the bottom portion 28 are cut according to respective circumference arcs, with opposite curvature ( figure 12 ).
  • the bottom portion 28 is affected with a distribution of through holes 32.
  • the through holes 32 can be distributed in a regular manner, along parallel rows, and mainly in the central zone of the bottom portion 28.
  • the bottom portion 28 also comprises, along the lateral edges 31 thereof, reliefs 33.
  • the reliefs 33 are arranged mirrored along the two lateral edges 31; for example, each lateral edge 31 comprises three respective reliefs 33, two-by-two opposite.
  • the front portion 29 is substantially shaped with circular segment.
  • the front portion 29 comprises a first lower edge 34, with circumference arc.
  • the front portion 29 comprises, along the aforesaid first lower edge 34, first notches 35 (e.g. three first notches 35).
  • the front portion 29 comprises a respective plurality of further through front holes 29a; the front holes 29a facilitate the circulation of air within the brazier 1.
  • the air circulates through the front holes 29a, moving into the interspace defined between the container 10 and the support 11, which thus constitutes a duct for the front holes 29a themselves.
  • the number and the dimensions of the front holes 29a can be varied in relation to the requested combustion power.
  • the front holes 29a can be selectively closed/plugged in order to modify the circulating air flow.
  • the rear portion 30 is also shaped substantially as a circular segment, with shape similar to that of the front portion 29.
  • the rear portion 30 comprises a second lower edge 36, shaped with circumference arc.
  • the rear portion 30 comprises, along the aforesaid second lower edge 36, second notches 37 (e.g. three second notches 37).
  • the second notch 37 provided centrally is widened, towards the interior of the aforesaid rear portion 30, shaping a kind of circular opening 37a.
  • the upper contour 38 of the rear portion 30 shapes a central flap 39; the flap 39 has a through seat 40 thereon.
  • the contour of the through seat 40 consists of joining a first contour 41 and a second contour 42, both shaped with circumference arc, in which the first contour 41 has diameter smaller than that of the second contour 42 (see figures 7 , 13 ).
  • the reliefs 33 of the bottom portion 28 are engaged, respectively, in the first notches 35 of the front portion 29 and in the second notches of the rear portion 37.
  • rear portion 30 could be provided with respective air circulation holes (not illustrated).
  • the interspace defined between the container 10 and the support 11 constitutes a duct for the holes of the rear portion 30 (if they are provided).
  • the bottom portion 28, the front portion 29 and the rear portion 30 are made starting from portions, or sheets, of metal sheet (e.g. of stainless steel) that are cut and bent (in this case, only the bottom portion 28 is bent), or, alternatively, stamped.
  • metal sheet e.g. of stainless steel
  • the permanent joining of the bottom portion 28 with the front portion 29 and the rear portion 30 is obtained by means of welding.
  • the container 10 - observed on the side - has a shape that is flared and tapered upward (with reference to the placement and use configuration).
  • This shape allows the easy insertion of the container 10 within the support 11.
  • the brazier 1 on the side - the top of the container 10 is wider than the top of the support 11, such that the container 10 is abutted against the edge of the opening of the support 11 without completely penetrating therein, also facilitated by the tilt of the strip 20; in other words, the container 10 is situated at a certain distance from the bottom 14 of the support 11, so as to define and delimit an internal space 43 between the support 11 and the container 10.
  • Such internal space 43 can have the function of facilitating the circulation of the comburent air below the container 10, on which the fuel is fed and deposited.
  • the reliefs 33 of the bottom portion 28 act as abutments, respectively, against the front wall 29 and the rear wall 30 of the support 11, so as to obtain a stable coupling between the support 11 and the container 10.
  • the container 10 and the support 11 are mutually connected in a permanent manner, by means of welding.
  • the container 10 and the support 11 are not constrained in a permanent manner, but rather are mutually associated in a removable manner, with the container 10 simply abutted against the support 11.
  • the brazier 1 comprises a spatula 44.
  • the spatula 44 has the function of keeping clean the through holes 32 of the bottom portion 28 of the container 10.
  • the spatula 44 is substantially S-shaped, according to a broken line consisting of three straight segments.
  • the spatula 44 comprises a first segment 45, adapted to be connected to actuation means 46 provided in the stove S (for example a crank gear, or a mechanism of another type).
  • actuation means 46 provided in the stove S (for example a crank gear, or a mechanism of another type).
  • the spatula comprises a second connection segment 47, and a third segment 48, adapted to brush the surface of the bottom portion 28 in order to clean the through holes 32.
  • spatula 44 can be made of steel sheet.
  • the spatula 44 comprises an indentation 49, for coupling with the seat 40 of the rear portion 30. More in detail, in use configuration, the first contour 41 of the seat 40 is engaged in the indentation 49 of the spatula 44.
  • the spatula 44 is thus rotatably supported in its rotation, necessary for the cleaning of the surface of the bottom portion 28.
  • the spatula 44 can be easily extracted from the seat 40, and hence completely removed from the brazier 1, for cleaning and/or maintenance reasons, without having to disassemble parts of the stove S for this purpose.
  • the spatula 44 can be easily extracted and removed, and possibly substituted, in an easy manner, by removing from the stove S the group comprising the support 11 and the container 10 (which for this reason can be disassembled from the stove S).
  • the through holes 32 of the bottom portion 28 are attained with greater diameter at the front zone, front during use, of the container 10, since in such zone a greater quantity of fuel is deposited.
  • the rear wall 16 of the first portion 12 comprises a bent upper edge 50, i.e. tilted with respect to the plane of the same rear wall 16.
  • the upper opening of the support 11 has flared shape both at the front and back, so as to facilitate the abutment of the container 10.
  • the bottom portion 28 of the container 10 has the respective ends 51 bent, both with opposite curvature with respect to the concavity of the aforesaid bottom portion 28.
  • Such bent ends 51 thus define the respective grooves 52.
  • the container 10 and the support 11 both consist of respective portions made of metal sheet, suitably stamped.
  • the container 10 and the support 11 can both consist of a single suitably stamped metal sheet portion, or each of these can consist of multiple portions of metal sheet that are stamped and then assembled, preferably - but not exclusively - by means of welding.
  • FIG 15 Another embodiment of the brazier 1 according to the invention is illustrated in figure 15 . This embodiment differs from the preceding due to the shape of the spatula 44.
  • the spatula 44 is substantially U-shaped.
  • the spatula 44 comprises a first segment 45, adapted to be connected to actuation means 46 provided in the stove S (e.g. a crank gear, or a mechanism of another type).
  • actuation means 46 provided in the stove S (e.g. a crank gear, or a mechanism of another type).
  • the spatula comprises a second connection segment 47, and a third segment 48, adapted to brush the surface of the bottom portion 28 in order to clean the through holes 32.
  • the spatula 44 also comprises a fourth connection segment 53, and a fifth segment 54, aligned with the first segment 45 rotatably supported by the front portion 29 (for example at a loop made in the latter).
  • the segments 45, 46, 47, 53, 54 thus follow each other according to a broken line that is substantially U-shaped.
  • This version of the invention provides an improved support for the rotary movement of the spatula 44, while preserving the advantages of the simple easy removal for the purposes of cleaning/maintenance/substitution.
  • the mode of use of the brazier 1 according to the invention is, in light of that described above, entirely intuitive.
  • the fuel is fed so as to be deposited on the bottom portion 28 of the container 10.
  • the comburent air is fed so as to cross the support 11, and to brush the fuel deposited on the bottom portion 28.
  • the spatula 44 is actuated so as to clean the through holes 32 of the bottom portion 28.
  • Also forming the object of the present invention is a method for manufacturing a brazier 1 for stoves powered by solid fuel.
  • the method according to the invention comprises a step of providing a plurality of portions made of metal sheet 12, 13, 28, 29, 30, suitably cut and/or bent.
  • the method also comprises a step of assembling several of the aforesaid portions made of metal sheet 28, 29, 30, so as to obtain a container 10 configured to contain the fuel, provided with a bottom portion 28 that is substantially concave and affected with a distribution of through holes 32.
  • the method also comprises a step of assembling other portions made of metal sheet 12, 13 so as to obtain a support 11, configured to house the aforesaid container 10.
  • the method also comprises a step of connecting the aforesaid portions made of metal sheet 12, 13 and 28, 29, 30, in a permanent manner, by means of welding, in order to respectively obtain the container 10 and the support 11.
  • the brazier 1 manufactured with the method according to the invention possess the previously-described characteristics.
  • the invention thus conceived, allows obtaining important technical advantages.
  • the structural solution of the brazier 1 according to the present invention considerably simplifies the manufacturing process, since it is no longer necessary to resort to arduous castings in cast iron.
  • the object obtained due to the solution proposed in the present invention is simpler to assemble and to install within the stove S; in addition, it is simpler and more manageable to clean.
  • the brazier 1 can be attained with considerably smaller sizes, and with a manufacturing process (which consists of processing parts of metal sheet) that is faster and less expensive overall.

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  • 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)
  • Cookers (AREA)
EP20203339.5A 2019-12-20 2020-10-22 Grille de four pour combustible solide Pending EP3839339A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000025156A IT201900025156A1 (it) 2019-12-20 2019-12-20 Braciere per stufe alimentate a combustibile solido

Publications (1)

Publication Number Publication Date
EP3839339A1 true EP3839339A1 (fr) 2021-06-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20203339.5A Pending EP3839339A1 (fr) 2019-12-20 2020-10-22 Grille de four pour combustible solide

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EP (1) EP3839339A1 (fr)
IT (1) IT201900025156A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200002402A1 (it) * 2022-02-10 2023-08-10 Tecno Cover S R L Apparato di combustione a combustibile solido in pezzatura minuta, come ad esempio “pellet” e metodo di funzionamento del suddetto apparato di combustione
EP4265964A1 (fr) * 2022-04-19 2023-10-25 Thermorossi S.P.A. Brasero de construction mixte pour poêles à combustible solide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105797A (en) * 1991-07-25 1992-04-21 Gulutzen Alexander M Solid fuel burning stove
EP1559957A1 (fr) * 2004-01-28 2005-08-03 Thermorossi S.P.A. Brûleur de fourneau pour l'incinération de boulettes, de copeaux de bois, de céréales et de déchets végétaux en général
EP2019262A2 (fr) * 2007-07-24 2009-01-28 Caminetti Montegrappa s.r.l. Brûleur pour appareil de chauffage à combustible solide
KR20120039369A (ko) * 2010-10-15 2012-04-25 김정길 목재 팰릿 난로
EP2226558B1 (fr) 2009-03-06 2016-03-30 THERMOROSSI S.p.A. Brûleur pour poêle alimenté en combustibles solides
JP2018076980A (ja) * 2016-11-07 2018-05-17 株式会社ホンマ製作所 ペレットストーブ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105797A (en) * 1991-07-25 1992-04-21 Gulutzen Alexander M Solid fuel burning stove
EP1559957A1 (fr) * 2004-01-28 2005-08-03 Thermorossi S.P.A. Brûleur de fourneau pour l'incinération de boulettes, de copeaux de bois, de céréales et de déchets végétaux en général
EP2019262A2 (fr) * 2007-07-24 2009-01-28 Caminetti Montegrappa s.r.l. Brûleur pour appareil de chauffage à combustible solide
EP2226558B1 (fr) 2009-03-06 2016-03-30 THERMOROSSI S.p.A. Brûleur pour poêle alimenté en combustibles solides
KR20120039369A (ko) * 2010-10-15 2012-04-25 김정길 목재 팰릿 난로
JP2018076980A (ja) * 2016-11-07 2018-05-17 株式会社ホンマ製作所 ペレットストーブ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200002402A1 (it) * 2022-02-10 2023-08-10 Tecno Cover S R L Apparato di combustione a combustibile solido in pezzatura minuta, come ad esempio “pellet” e metodo di funzionamento del suddetto apparato di combustione
EP4265964A1 (fr) * 2022-04-19 2023-10-25 Thermorossi S.P.A. Brasero de construction mixte pour poêles à combustible solide

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