EP3128232A1 - Appareil de chauffage à combustible solide - Google Patents

Appareil de chauffage à combustible solide Download PDF

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Publication number
EP3128232A1
EP3128232A1 EP15425059.1A EP15425059A EP3128232A1 EP 3128232 A1 EP3128232 A1 EP 3128232A1 EP 15425059 A EP15425059 A EP 15425059A EP 3128232 A1 EP3128232 A1 EP 3128232A1
Authority
EP
European Patent Office
Prior art keywords
solid fuel
heating appliance
duct
ring
appliance according
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.)
Granted
Application number
EP15425059.1A
Other languages
German (de)
English (en)
Other versions
EP3128232B1 (fr
Inventor
Sigismondo Canzian
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.)
CS THERMOS Srl
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CS THERMOS Srl
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Publication date
Application filed by CS THERMOS Srl filed Critical CS THERMOS Srl
Priority to EP15425059.1A priority Critical patent/EP3128232B1/fr
Publication of EP3128232A1 publication Critical patent/EP3128232A1/fr
Application granted granted Critical
Publication of EP3128232B1 publication Critical patent/EP3128232B1/fr
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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
    • F23B30/00—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber
    • F23B30/02—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts
    • F23B30/04—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts with fuel-supporting surfaces that are rotatable around a horizontal or inclined axis and support the fuel on their inside, e.g. cylindrical grates
    • 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

Definitions

  • the present invention generally relates to a solid fuel heating device, such as a stove or a boiler.
  • the invention relates to a stove for heating rooms, equipped with a poly-fuel burner, which is able to burn, in addition to wood and to all types of wood pellets, also scraps of agricultural processing, i.e. organic matter, such as the "bio-mass".
  • bio-mass as solid fuel which can be used in the stove of the invention are the crushed and full olive pits (waste of olive oil processing), the pelletized pruning of vines (waste of grape growing), the cherry's kernels (waste of the cherries processing), the shells of almonds/hazelnuts/pinenuts (waste from the corresponding processing), the corn (dried to 13% and used mixed with wood pellet), the pellet of miscanthus (which does not require drying to become pellet), the agripellet (consisting of waste products of cereals mixed with wood or pruning) and the industrial pellet (made from twigs and bark).
  • bio-mass fuels are called "energy pellet", because they have a great performance on combustion and are also available at a reasonable price; however, said types of biomass are considered not excellent for quality, because they tend to clog and block the traditional stoves, as they produce a lot of ash.
  • the present invention aims to overcome the above mentioned drawbacks of the known art.
  • an object of the invention is to provide a solid fuel heating appliance which allows to burn different types of bio-mass and different types of pellet, also of poor quality, i.e. obtained with the tree's branches and bark and/or with exotic wood (silicon-rich).
  • Another object of the present invention is to provide a solid fuel heating appliance, which allows to use different solid fuels and which allows to carry out an automatic restart on request at the ambient temperature and/or a power modulation, according to which the stove goes to the minimum power to the achievement of the desired temperature, with consequent savings of electric energy, higher fuel utilization and improved efficiency of the stove.
  • a further object of the present invention is to provide a solid fuel heating appliance, which has advantages in terms of cost savings on the purchase of the fuel and which allows a periodic, automatic and simple cleaning.
  • the heating apparatus of the present invention allows the use of any type of solid fuel, such as wood, pellet and bio-mass, and, specifically, not only pellet of excellent quality, but also pellet derived from production waste (bark and twigs) and pellet producing a high percentage of ash; the burner used in the above heating apparatus is also able to use different types of bio-mass, including hazelnut shells, almond shells, olive pits, vine shoots pellet, grape seed pellet, miscanthus pellet, etc., with a considerable saving of costs compared to the wood pellet of good quality and a high availability of the solid fuel, as it is not subject to discontinuous availability of the wood pellet on the market.
  • solid fuel such as wood, pellet and bio-mass
  • the heating apparatus can also be used with operation at shutdown, with automatic restart on request at the ambient temperature, or with a modulating operation, according to which the appliance is brought to a minimum power when the desired temperature is reached; in particular, the modulating operation increases the electric energy saving (as the resistors work for less time), the duration of the resistors (due to the low mechanical wear), and the exploitation of the fuel (because it is possible to get a better efficiency of the heating appliance).
  • the use of a poly-fuel burner provides advantages in terms of cost savings on purchasing the fuel and also allows a periodic cleaning of the appliance, in an extremely simple and quick way; the automatic cleaning is part, in fact, of the normal working cycle of the burner, which, at predetermined time, stops the falling of the fuel and carries out a complete cleaning of the external structure, together with a regular cleaning of the ash collection tray.
  • an anti-dust filter which is placed under the ash tray, is able to hold the environment dust and prevents it from being re-circulated by the hot air.
  • the design features of the heating appliance of the present invention allow to avoid any return of the flame from the burner to the solid fuel tank, any fumes compression and the relative increase in pressure that is produced into the heater and that could lead, together with the problems of clogging due to the wet pellet, to a dirty stove or to a clogged chimney, to the explosion of the front glass.
  • the failure of a resistor does not bind the operation of the product and the user can continue to use it; the service call to replace the defective resistance can then be handled at the earliest opportunity and, in the meantime, the ignition of the heating appliance is carried out by means of the other resistor.
  • 21 generally indicates an external casing of a solid fuel stove, according to the present invention, which has a top cover 18 where there is formed a space 23 through which the solid fuel is inserted and from which a portion of a tube connected to the flue protrudes, a base 34 and an inner compartment 25 within which a burner 40 and the related combustion chamber are housed, said burner 40 and said combustion chamber being associated to a combustion air suction compartment 32, with a respective duct 30 and a containment chamber 24, and to an underlying container for collecting the ash and the waste generated by the combustion.
  • the screw conveyor 42 is configured to load the solid fuel from the tank 36 to the combustion chamber and is able to "dose" the solid fuel, because by varying the speed and frequency of its motion it is possible to measure the quantity of solid fuel to be supplied to the burner 40 in a time unit.
  • a first screw conveyor 42 picks up the solid fuel from the tank 36 and delivers it, through the load motor 22, upwards and in an oblique direction, before dropping it along a conduit 35 which is perfectly vertical;
  • the design feature of the above-mentioned loading of solid fuel avoids any backfire from the burner 40 to the tank 36, since the vertical duct 35 avoids any possibility of the flame to go up again towards the tank 36 and the horizontal screw container 20, which is driven by a specific motor 6 with a respective inductive sensor 7 so that the motor 6 is driven always more quickly than the load motor 22, push forward the solid fuel coming from the tank 36, until it is brought to the burner 40; thus, the vertical duct 35 is always free of accumulations of solid fuel, thus increasing the safety of the stove.
  • the burner 40 is formed by a shaped basket 2, coupled to an external conveyor 4, a mouthpiece 3 and a front attachment plate 5, which has a shaped duct 33 for passing the intake air.
  • the shaped basket 2 has an iron rotary ring 34, with slots 38 on its lateral surface and provided with supporting blades 37; the rotary ring 34 is screwed to a rotating shaft 31, which in turn is driven by a relative motor 8, with a related inductive sensor (not shown in the figures).
  • the shaft 31 rotates within a cylindrical duct (when there are placed two bushings made of Teflon®), which is fixed on the casing of the chamber 24 by means of fastening screws, which allow the centering of the basket 2 on the burner 40.
  • the ring 34 is thus rotated by the drive 31 and by means of the related inductive sensor, which controls the drive motor 8 for predetermined time intervals, so as to obtain a rotation of the ring 34 at discrete steps and for prefixed angles of rotation and so as to stop the ring 34 in the desired positions.
  • the ring 34 rotates in spurts and clockwise, so that, during rotation, the combustion residues, which pass through the slots 38, are dragged upwards on the upper wall 11 of the conveyor 4 and towards the side duct 39 of the basket 2, which faces in correspondence of a hook or spur 9, which is welded in turn on the inner part of the mouthpiece 3.
  • the contrast action between the combustion residues conveyed upwards on the hook 9 causes a complete crushing and compacting of the heavy wastes, which are formed, for example, by the combustion of different types of biomass, and a final discharge of the ashes in the ash tray. Furthermore, the finer ash produced in the burner 40 is discharged directly towards the removable drawer placed below the ring 34, through the slots 38 and the shaped opening 10 formed on the upper wall 11 of the conveyor 4.
  • the rotation of the ring 34 takes place in discrete steps and for angles of 90°, so as to ensure that the horizontal duct 17, from which comes out the solid fuel, and the electric resistors 26 are always positioned, when the ring 34 is stopped, at the spaces provided between the supporting blades 37 (which, in turn, are preferably four and placed at 90° one from the other, according to a radial shaping).
  • the compartment air intake 32 is placed on the lower part of the burner 40 and conveys the combustion air, via the duct 33, towards the slots 38 of the ring 34; moreover, the particular shape of the conveyor 4 forces the incoming combustion air to pass only in correspondence of the slots 38 placed at the bottom and centrally with respect to the conveyor 4, so that the combustion is optimal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
EP15425059.1A 2015-08-03 2015-08-03 Appareil de chauffage à combustible solide Active EP3128232B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15425059.1A EP3128232B1 (fr) 2015-08-03 2015-08-03 Appareil de chauffage à combustible solide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15425059.1A EP3128232B1 (fr) 2015-08-03 2015-08-03 Appareil de chauffage à combustible solide

Publications (2)

Publication Number Publication Date
EP3128232A1 true EP3128232A1 (fr) 2017-02-08
EP3128232B1 EP3128232B1 (fr) 2020-03-25

Family

ID=54151232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15425059.1A Active EP3128232B1 (fr) 2015-08-03 2015-08-03 Appareil de chauffage à combustible solide

Country Status (1)

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EP (1) EP3128232B1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2144001A1 (fr) * 2008-07-11 2010-01-13 C.S. Thermos s.r.l. Appareil de nettoyage de l'âtre d'un appareil de chauffage
EP2824049A1 (fr) * 2013-07-10 2015-01-14 CS THERMOS s.r.l. Appareil de chauffage à combustible solide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2144001A1 (fr) * 2008-07-11 2010-01-13 C.S. Thermos s.r.l. Appareil de nettoyage de l'âtre d'un appareil de chauffage
EP2824049A1 (fr) * 2013-07-10 2015-01-14 CS THERMOS s.r.l. Appareil de chauffage à combustible solide

Also Published As

Publication number Publication date
EP3128232B1 (fr) 2020-03-25

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