EP3108181A1 - Storage heating or slow heat release stove - Google Patents

Storage heating or slow heat release stove

Info

Publication number
EP3108181A1
EP3108181A1 EP15711846.4A EP15711846A EP3108181A1 EP 3108181 A1 EP3108181 A1 EP 3108181A1 EP 15711846 A EP15711846 A EP 15711846A EP 3108181 A1 EP3108181 A1 EP 3108181A1
Authority
EP
European Patent Office
Prior art keywords
stove according
stove
storage material
heat storage
furnace
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
EP15711846.4A
Other languages
German (de)
French (fr)
Other versions
EP3108181B1 (en
Inventor
Carlo Piazzetta
Fabio De Zen
Michele Bordignon
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.)
Gruppo Piazzetta SpA
Original Assignee
Gruppo Piazzetta Srl
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 Gruppo Piazzetta Srl filed Critical Gruppo Piazzetta Srl
Publication of EP3108181A1 publication Critical patent/EP3108181A1/en
Application granted granted Critical
Publication of EP3108181B1 publication Critical patent/EP3108181B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/34—Elements and arrangements for heat storage or insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/12—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel being fed to the combustion zone by free fall or by sliding along inclined surfaces, e.g. from a conveyor terminating above the fuel bed
    • 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
    • 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

Definitions

  • the present invention concerns a storage heating stove.
  • the storage heating or slow heat release stoves of the known type for heating rooms conventionally use wood as their fuel, and usually comprise a combustion chamber called furnace, inside which the aforementioned fuel is burnt, and ducts that collect the combustion products and that pass through a suitable mass of cement material, or material of other nature, that is suitably selected so as to accumulate a large amount of heat energy.
  • the aforementioned storage masses are normally cladded with majolica panels, or panels of other material having similar properties: the panels receive heat from the storage masses and they keep a surface temperature such as to heat the surrounding environment in the desired manner, for quite a long time in the order of a few hours. It has been observed, during use, that storage heating stoves of the known type, despite being able to optimally heat the room for a few hours with low energy consumption, have the drawback of requiring a manual feed of the fuel, i.e., by inserting wood in the combustion chamber.
  • this factor can often determine choosing heat generators of a different kind that are suitable for ensuring greater autonomy in terms of feeding of the fuel.
  • feeding the wood requires, in any case, at least a minimal knowledge of how the stove behaves and of the correct way of inserting the fuel inside the combustion chamber. Even this factor can lead the more amateur users to choose something else. In practice, it has moreover been observed that conventional wood is fed quite approximately and therefore it is not easily controllable in terms of the amounts to be introduced inside the stove.
  • heating devices for example with heat exchangers in which liquid is made to flow, such a liquid being heated and sent outside the respective device.
  • heat exchangers in which liquid is made to flow, such a liquid being heated and sent outside the respective device.
  • such devices do not have heat storage material in the sense indicated above and are therefore different from storage heating stoves and therefore do not pertain to the object of the present application.
  • the technical task of the present invention is to improve the state of the art.
  • one object of the present invention is to provide a storage heating stove or slow heat release stove that makes it possible to increase the operation autonomy in particular concerning feeding the fuel and the long release of heat energy even after turning off the apparatus.
  • Yet another object of the present invention is to provide a storage heating stove in which the consumption of fuel can be controlled in a more precise and accurate manner with respect to what is possible in stoves of the known type.
  • the storage heating stove comprises a base, a furnace provided with a relative brazier foreseen inside the base, and at least one conveying duct for conveying the combustion fumes generated inside the furnace associated with respective suction means.
  • the conveying duct is at least partially surrounded, along at least one portion of its length, by heat storage material that is suitable for storing heat conveyed by the combustion fumes and for progressively releasing it into the room to be heated.
  • the stove further comprises at least one tank for solid fuel, of the pellet type, which is provided with automatic feeding means for automatically feeding the fuel and communicating with an opening provided in the furnace.
  • the automatic feeding of pellet fuel makes it possible to obtain greater autonomy of operation of the stove with less intervention by the user; moreover, the amount of fuel consumed can be controlled more precisely.
  • figure 1 is a front view of the stove according to the invention.
  • figure 2 is a top view of the stove
  • figure 3 is a side view of the stove
  • figure 4 is an exploded axonometric view of the stove
  • figure 5 is a cross section view of the stove taken along the plane V-V of figure
  • figure 6 is a cross section view of the stove taken along the plane VI- VI of figure 1 ;
  • figure 7 is a cross section view of the stove taken along the plane VII-VII of figure 1.
  • reference numeral 1 wholly indicates a storage heating or slow heat release stove according to the present invention.
  • slow heat release stoves we mean apparatuses with heat storage material having heat storage capacity for storing heat in its mass, so that it provides heat for many hours after the fire or the furnace has been switched off.
  • the storage heating or slow heat release stove 1 according to the present invention is intended to be installed in civil environments of any type, without any limitation to the purposes of the present invention.
  • the stove 1 comprises a base 2.
  • the base 2 can have any shape and size.
  • the base 2 is made, for example, of metal material such as steel or the like, but it could also be made of another material with properties that are suitable for the application.
  • the stove 1 further comprises a furnace 3.
  • the furnace 3 is provided inside the base 2.
  • the furnace 3 comprises a brazier 4, which is positioned in its lower area.
  • the solid fuel is positioned on the brazier 4.
  • the brazier 4 can be ignited with known means and methods that are not specifically subject-matter of the present invention.
  • the furnace 3 can be enclosed inside a metal box-shaped structure, or inside a structure of another kind.
  • the comburent air is introduced inside the furnace 3 through natural convection or through suction means.
  • the stove 1 further comprises at least one conveying duct 5 for conveying the combustion fumes generated inside the furnace 4.
  • the conveying duct 5 is associated with suction means 6, which make it possible to extract the fumes from the stove 1.
  • the at least one conveying duct 5 is at least partially surrounded, along at least one portion of its length, by heat storage material, which is wholly indicated with reference numeral 7.
  • the heat storage material 7 is suitable for storing heat conveyed by the combustion fumes through the conveying duct 5, and for progressively releasing it into the surrounding environment to be heated.
  • the release of heat stored by the heat storage material 7 to the external environment occurs through panels 8 made of suitable material, for example majolica or the like, which cover the heat storage material 7 and/or other parts of the stove 1, or through a finishing covering that is directly applied to the heat storage material 7.
  • the panels 8 or the finishing covering have an inner face that is in contact with the heat storage material 7 and a face outside the stove, so that the release of heat that is stored by the heat storage material 7 to the outside occurs by means and through the panels 8 or the finishing covering.
  • the furnace 4 is provided with a front inspection hatch 9, which can or not be provided with glass 10.
  • the stove 1 comprises at least one tank
  • the tank 1 1 is visible in particular in figures 6 and 7.
  • this fuel mainly thanks to the geometrical and dimensional characteristics of the particles that form it, can be stored even in quite high amounts. Moreover, it can be introduced inside the furnace in amounts that can be determined with greater precision.
  • the tank 11 for the pellets is associated, on one side, with the furnace 3 of the stove 1. According to another aspect of the present invention, the tank 1 1 is provided with automatic feeding means 12 for automatically feeding the fuel.
  • the automatic feeding means 12 communicate with an opening 13 that is foreseen in the furnace 3.
  • the tank 1 1 is provided with a respective upper loading door 14 for feeding the fuel and/or for inspection.
  • the tank 1 1 is associated with the rear wall 15 of the furnace 3.
  • the tank 1 1 can be housed inside a respective rear metal casing 16 of the stove 1 , or in another similar housing element.
  • the stove 1 comprises at least two discharge ducts 5 for example two ducts that are symmetrical with respect to the longitudinal plane of symmetry of the stove 1.
  • the two conveying ducts 5 substantially extend vertically and parallel with respect to the furnace 3 and have a first ascending section rising from the furnace 3 and a second descending section, so as to create a path for the combustion fumes F first ascending and then descending.
  • each of the two conveying ducts 5 extends along a respective side of the stove, and the heat storage material surrounds the second section of the two conveying ducts 5.
  • the conveying ducts 5 can have a different shape, and path shape that is not symmetrical with respect to the axis of the stove 1 , and could also extend in horizontal sections with variable length.
  • the conveying ducts 5 are joined, at the base of the stove 1, with a lower chamber 17, in which the fumes that are transported from the ducts 5 themselves are collected.
  • the lower chamber 17 communicates with the suction means 6 of the fumes, which are for example of the centrifuge type and that communicate with a relative ejection duct 18.
  • the stove 1 comprises a fumes expansion chamber 19.
  • the fumes expansion chamber 19 is foreseen above the furnace 3, as illustrated for example in figures 5 and 6.
  • the fumes further expand and slow down before entering the conveying ducts 5 and starting the actual heat exchange phase.
  • the expansion chamber 19 comprises at least one box-shaped body 20 that is made of metal material and is positioned above the furnace.
  • the expansion chamber 19 is obtained directly in the heat storage material 7, so as to limit heat losses.
  • the shape and sizes of the expansion chamber 19 can be of course any, without any limitation.
  • the furnace 3 communicates with the expansion chamber 19 through upper openings 21.
  • the expansion chamber 19 there can be a plurality of deflectors, or separators, which are suitable for slowing down the fumes and for increasing heat-exchange, by lowering their outlet temperature.
  • the deflectors foreseen inside the expansion chamber 19 could be made of metal material or of another material that is suitable for storing heat, for example refractory material.
  • the two conveying ducts 5 of the fumes are connected to the upper portion of the expansion chamber 19, as illustrated for example in figure 5.
  • each of the conveying ducts 5 comprises at least one respective tubular portion, made of metal material, which is placed in contact with the heat storage material 7.
  • the heat storage material 7 can comprise at least one block 24 of solid material.
  • the heat storage material 7 comprises solid material and not a heat exchanger with water or a liquid as vector fluid.
  • the heat storage material 7 is made up of at least one plurality of blocks 24 that are stacked in contact on top of one another, for example at the sides of the stove 1.
  • Each of the blocks 24 comprises a respective recess 25 for housing part of the respective conveying duct 5, the recess 25 of a block of a plurality of blocks 24 being aligned with the recesses 25 of the other blocks 24 of the respective plurality of blocks 24.
  • the recess 25 has, for example, a semi-circular section.
  • each conveying duct 5 for conveying the combustion fumes is directly formed in the heat storage material 7.
  • the blocks 24 can have respective circular through holes- or holes with another shape- which, on top of one another, define the aforementioned discharge ducts.
  • the automatic feeding means 12 for automatically feeding fuel of the pellet type comprise, more in detail, at least one Archimedean screw 26.
  • the Archimedean screw 26 is rotatably supported at the lower portion 27 of the tank 1 1. More in detail, the Archimedean screw 26 is mounted for rotation inside a tubular body 28 communicating with the lower portion 27 of the tank 11 at its side surface.
  • the axis of the Archimedean screw 27 is associated, for example with an electric motor or with a geared motor group, not represented in the figures, which is operatively connected to the control board for operating the stove 1.
  • the tubular body 28, inside which the Archimedean screw 26 is supported, comprises a side hole 29 for communicating with the opening 13 of the furnace 3.
  • the opening 13 of the furnace 3 is foreseen at its rear wall.
  • the opening 13 could be foreseen in other areas of the furnace 3, in relation to specific application requirements.
  • the Archimedean screw 26 is mounted for rotation according to a rotation axis inclined with respect to the vertical, by a first predetermined angle a, as illustrated in figure 6.
  • a first predetermined angle a is mainly selected in relation to the physical characteristics of the pellets, so as to optimise its transportation towards the furnace 3.
  • the side hole 29 of the tubular body 28 communicates with the opening 13 of the furnace 3 through a feeding duct 30.
  • the feeding duct 30 is inclined, with respect to the vertical by a second predetermined angle ⁇ , as illustrated in the same figure 6.
  • the second predetermined angle ⁇ is selected so as to supply the furnace 3 with the desired amount of fuel per unit time, and/or based upon other considerations mainly related to the characteristics for feeding the fuel.
  • the stove 1 comprises at least one selectively opening and closing valve 31, which is interposed between the automatic feeding means 12 for feeding the fuel and the opening 13 of the furnace 3.
  • the valve 31 is associated with manual or automatic actuation means.
  • the valve 31 can be for example of the gate valve type, or of the type that can rotate around an axis, or of yet another kind.
  • the means for actuating the valve 31, in the case in which they are of the automatic type, can be made up, for example, by an electric motor, by a linear electric actuator, by an electromagnetic actuator, or by another kind, without any limitation.
  • valve 31 is positioned along the fuel feeding duct 30.
  • valve 31 could be foreseen in another position interposed between the automatic feeding means 12 and the opening 13.
  • valve 31 is suitable for preventing the hot fumes from accidentally rising back up from the brazier along the feeding duct 30 of the pellets.
  • valve 31 In addition to carrying out this function, in the stove according to the present invention the aforementioned valve 31 also makes it possible to obtain another important technical effect.
  • the stove 1 when the heat energy that is accumulated in the heat storage material 7 is sufficient for ensuring a suitable release of heat to the covering panels 8, the stove 1 automatically switches off.
  • the early stopping of the suction means 6 makes it possible to keep the stove 1 at the desired temperature for a longer period of time, since the release of heat by the heat storage material 7 occurs over a longer period of time.
  • this step it is ensured for there to be a heating of the environment without consumption of fuel or electric energy, optionally except for the minimum energy required in order to supply the control board in the stand-by mode.
  • heat storage material 7 used in the stove 1 according to the present invention can be for example cement or material of any other kind having similar heat properties.
  • the stove 1 comprises at least one temperature sensor that is suitable for detecting the temperature of the heat storage material 7.
  • the stove 1 can also comprise a sensor that is suitable for detecting the outside temperature.
  • the stove 1 can comprise a sensor that is suitable for detecting a combination of the temperature of the heat storage material 7 and the outside temperature.
  • the temperature sensor or sensors foreseen in the stove 1 are operatively connected to the control board for controlling its operation.
  • the operation of the stove 1 according to the invention is, in the light of what has been described, completely intuitive.
  • the feeding of the fuel of the pellet type into the furnace 1 is carried out in a completely automatic manner without requiring any intervention by the user, apart from when the fuel inside the tank 11 has run out.
  • the fuel is fed, in the correct amount over time, by simply adjusting the rotation speed of the Archimedean screw 26.
  • valve 11 makes it possible to obtain a considerable saving of energy in terms of supplying electricity to the suction means 6, and even in terms of stove 1 autonomy from a surface temperature point of view.
  • the stove 1 keeps its surface temperature optimal for a period of time that is considerably longer with respect to what occurs in storage heating stoves of the known type.
  • the stove according to the invention can operate with greater autonomy, with respect to conventional wood stoves, with less user intervention.
  • the amount of fuel consumed can be controlled with greater precision: this makes it possible to obtain a considerable saving of material.

Abstract

A storage heating stove, comprising a base (2), a furnace (3) provided with a relative brazier (4) foreseen inside it, and at least one conveying duct (5) for conveying the combustion fumes generated inside the furnace (3) associated with respective suction means (6), the conveying duct (5) being at least partially surrounded, along at least one portion of its length, by heat storage material (7) suitable for storing heat conveyed by the combustion fumes and for progressively releasing it into the environment to be heated; the stove further comprises at least one solid fuel tank (11), of the pellet type, associated with the base (2) and provided with automatic feeding means (12) for feeding the fuel communicating with an opening (13) foreseen in the furnace (3).

Description

GRUPPO PIAZZETTA S.p.A.
Description of the Patent for the Industrial Invention having title:
"STORAGE HEATING OR SLOW HEAT RELEASE STOVE" Designated inventors: Carlo Piazzetta
Fabio de Zen
Michele Bordignon
TECHNICAL FIELD OF THE INVENTION
The present invention concerns a storage heating stove.
STATE OF THE ART
The storage heating or slow heat release stoves of the known type for heating rooms, conventionally use wood as their fuel, and usually comprise a combustion chamber called furnace, inside which the aforementioned fuel is burnt, and ducts that collect the combustion products and that pass through a suitable mass of cement material, or material of other nature, that is suitably selected so as to accumulate a large amount of heat energy.
The aforementioned storage masses are normally cladded with majolica panels, or panels of other material having similar properties: the panels receive heat from the storage masses and they keep a surface temperature such as to heat the surrounding environment in the desired manner, for quite a long time in the order of a few hours. It has been observed, during use, that storage heating stoves of the known type, despite being able to optimally heat the room for a few hours with low energy consumption, have the drawback of requiring a manual feed of the fuel, i.e., by inserting wood in the combustion chamber.
This operation obviously requires the user to be present at the time in which the temperature of the room begins to drop below the desired level.
For some users of the product, this factor can often determine choosing heat generators of a different kind that are suitable for ensuring greater autonomy in terms of feeding of the fuel.
Moreover, feeding the wood requires, in any case, at least a minimal knowledge of how the stove behaves and of the correct way of inserting the fuel inside the combustion chamber. Even this factor can lead the more amateur users to choose something else. In practice, it has moreover been observed that conventional wood is fed quite approximately and therefore it is not easily controllable in terms of the amounts to be introduced inside the stove.
This can sometimes lead, especially in the case of inexperienced users, to an excessive consumption of fuel, to the development of temperatures that are excessively high and not required inside the apparatus, and to an increase in the polluting emissions.
Of course, there are also other types of heating devices, for example with heat exchangers in which liquid is made to flow, such a liquid being heated and sent outside the respective device. As shall be understood, such devices do not have heat storage material in the sense indicated above and are therefore different from storage heating stoves and therefore do not pertain to the object of the present application.
PURPOSES OF THE INVENTION
The technical task of the present invention is to improve the state of the art.
Within such a technical task, one object of the present invention is to provide a storage heating stove or slow heat release stove that makes it possible to increase the operation autonomy in particular concerning feeding the fuel and the long release of heat energy even after turning off the apparatus.
Yet another object of the present invention is to provide a storage heating stove in which the consumption of fuel can be controlled in a more precise and accurate manner with respect to what is possible in stoves of the known type.
This task and these objects are achieved with the storage heating or slow heat release stove according to the attached claim 1.
The storage heating stove according to the invention comprises a base, a furnace provided with a relative brazier foreseen inside the base, and at least one conveying duct for conveying the combustion fumes generated inside the furnace associated with respective suction means.
The conveying duct is at least partially surrounded, along at least one portion of its length, by heat storage material that is suitable for storing heat conveyed by the combustion fumes and for progressively releasing it into the room to be heated.
According to one aspect of the invention, the stove further comprises at least one tank for solid fuel, of the pellet type, which is provided with automatic feeding means for automatically feeding the fuel and communicating with an opening provided in the furnace.
The automatic feeding of pellet fuel makes it possible to obtain greater autonomy of operation of the stove with less intervention by the user; moreover, the amount of fuel consumed can be controlled more precisely.
The depending claims refer to preferred and advantageous embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS.
The characteristics of the invention shall become clearer by a man skilled in the art from the following description and by the attached drawing tables, given as a non-limiting example, in which:
figure 1 is a front view of the stove according to the invention;
figure 2 is a top view of the stove;
figure 3 is a side view of the stove;
figure 4 is an exploded axonometric view of the stove;
figure 5 is a cross section view of the stove taken along the plane V-V of figure
2;
figure 6 is a cross section view of the stove taken along the plane VI- VI of figure 1 ;
figure 7 is a cross section view of the stove taken along the plane VII-VII of figure 1.
EMBODIMENTS OF THE INVENTION.
With reference to the attached figure 1 , reference numeral 1 wholly indicates a storage heating or slow heat release stove according to the present invention.
By slow heat release stoves we mean apparatuses with heat storage material having heat storage capacity for storing heat in its mass, so that it provides heat for many hours after the fire or the furnace has been switched off.
The storage heating or slow heat release stove 1 according to the present invention is intended to be installed in civil environments of any type, without any limitation to the purposes of the present invention.
The stove 1 comprises a base 2.
The base 2 can have any shape and size. The base 2 is made, for example, of metal material such as steel or the like, but it could also be made of another material with properties that are suitable for the application. The stove 1 further comprises a furnace 3.
The furnace 3 is provided inside the base 2.
The furnace 3 comprises a brazier 4, which is positioned in its lower area.
The solid fuel is positioned on the brazier 4.
The brazier 4 can be ignited with known means and methods that are not specifically subject-matter of the present invention.
The furnace 3 can be enclosed inside a metal box-shaped structure, or inside a structure of another kind.
The comburent air is introduced inside the furnace 3 through natural convection or through suction means.
The stove 1 further comprises at least one conveying duct 5 for conveying the combustion fumes generated inside the furnace 4.
The conveying duct 5 is associated with suction means 6, which make it possible to extract the fumes from the stove 1.
Moreover, the at least one conveying duct 5 is at least partially surrounded, along at least one portion of its length, by heat storage material, which is wholly indicated with reference numeral 7.
The heat storage material 7 is suitable for storing heat conveyed by the combustion fumes through the conveying duct 5, and for progressively releasing it into the surrounding environment to be heated.
In particular, the release of heat stored by the heat storage material 7 to the external environment occurs through panels 8 made of suitable material, for example majolica or the like, which cover the heat storage material 7 and/or other parts of the stove 1, or through a finishing covering that is directly applied to the heat storage material 7.
The panels 8 or the finishing covering have an inner face that is in contact with the heat storage material 7 and a face outside the stove, so that the release of heat that is stored by the heat storage material 7 to the outside occurs by means and through the panels 8 or the finishing covering.
The furnace 4 is provided with a front inspection hatch 9, which can or not be provided with glass 10. According to one aspect of the present invention, the stove 1 comprises at least one tank
11 of solid fuel of the pellet type.
The tank 1 1 is visible in particular in figures 6 and 7.
As it is known this fuel, mainly thanks to the geometrical and dimensional characteristics of the particles that form it, can be stored even in quite high amounts. Moreover, it can be introduced inside the furnace in amounts that can be determined with greater precision.
The tank 11 for the pellets is associated, on one side, with the furnace 3 of the stove 1. According to another aspect of the present invention, the tank 1 1 is provided with automatic feeding means 12 for automatically feeding the fuel.
The automatic feeding means 12 communicate with an opening 13 that is foreseen in the furnace 3.
Thanks to this solution, it is possible to continuously, and automatically, feed the fuel inside the furnace 3, without any intervention by the user if not when the fuel inside the tank 1 1 has run out.
As illustrated in particular in figure 6, the tank 1 1 is provided with a respective upper loading door 14 for feeding the fuel and/or for inspection.
More in detail, the tank 1 1 is associated with the rear wall 15 of the furnace 3.
The tank 1 1 can be housed inside a respective rear metal casing 16 of the stove 1 , or in another similar housing element.
In detail, the stove 1 comprises at least two discharge ducts 5 for example two ducts that are symmetrical with respect to the longitudinal plane of symmetry of the stove 1.
In particular, the two conveying ducts 5 substantially extend vertically and parallel with respect to the furnace 3 and have a first ascending section rising from the furnace 3 and a second descending section, so as to create a path for the combustion fumes F first ascending and then descending.
The second section of each of the two conveying ducts 5 extends along a respective side of the stove, and the heat storage material surrounds the second section of the two conveying ducts 5.
In one alternative embodiment of the invention, the conveying ducts 5 can have a different shape, and path shape that is not symmetrical with respect to the axis of the stove 1 , and could also extend in horizontal sections with variable length. The conveying ducts 5 are joined, at the base of the stove 1, with a lower chamber 17, in which the fumes that are transported from the ducts 5 themselves are collected.
The lower chamber 17 communicates with the suction means 6 of the fumes, which are for example of the centrifuge type and that communicate with a relative ejection duct 18.
According to another aspect of the present invention, the stove 1 comprises a fumes expansion chamber 19.
The fumes expansion chamber 19 is foreseen above the furnace 3, as illustrated for example in figures 5 and 6.
In the expansion chamber 19 the fumes further expand and slow down before entering the conveying ducts 5 and starting the actual heat exchange phase.
The expansion chamber 19 comprises at least one box-shaped body 20 that is made of metal material and is positioned above the furnace.
In one alternative embodiment of the invention, the expansion chamber 19 is obtained directly in the heat storage material 7, so as to limit heat losses.
The shape and sizes of the expansion chamber 19 can be of course any, without any limitation.
The furnace 3 communicates with the expansion chamber 19 through upper openings 21.
At the upper openings 21 it is foreseen for there to be respective deflectors 22, with any shapes and sizes, which provide for obtaining the slowing down and a first approximate filtration of the combustion fumes, withholding the heavier ash inside the furnace 3, which can be easily reached to remove the ash.
In one embodiment of the invention, even inside the expansion chamber 19 there can be a plurality of deflectors, or separators, which are suitable for slowing down the fumes and for increasing heat-exchange, by lowering their outlet temperature.
The deflectors foreseen inside the expansion chamber 19 could be made of metal material or of another material that is suitable for storing heat, for example refractory material.
The two conveying ducts 5 of the fumes are connected to the upper portion of the expansion chamber 19, as illustrated for example in figure 5.
At the top of the two conveying ducts 5 it is foreseen for there to be respective inspection or cleaning doors 23.
The path for conveying the combustion fumes inside the different components of the stove 1 is illustrated with the arrows F of figure 5.
In the embodiment of the invention illustrated in the figures, each of the conveying ducts 5 comprises at least one respective tubular portion, made of metal material, which is placed in contact with the heat storage material 7.
The heat storage material 7 can comprise at least one block 24 of solid material.
The heat storage material 7 comprises solid material and not a heat exchanger with water or a liquid as vector fluid.
As illustrated for example in figure 4, the heat storage material 7 is made up of at least one plurality of blocks 24 that are stacked in contact on top of one another, for example at the sides of the stove 1.
Each of the blocks 24 comprises a respective recess 25 for housing part of the respective conveying duct 5, the recess 25 of a block of a plurality of blocks 24 being aligned with the recesses 25 of the other blocks 24 of the respective plurality of blocks 24.
The recess 25 has, for example, a semi-circular section.
As can be observed for example in figure 7, the heat storage material 7 surrounds the conveying ducts 5 for at least half of their side surface, making it possible to obtain the desired heat exchange between the combustion fumes and the heat storage material 7. In one alternative embodiment of the invention, each conveying duct 5 for conveying the combustion fumes is directly formed in the heat storage material 7.
For example, according to this solution the blocks 24 can have respective circular through holes- or holes with another shape- which, on top of one another, define the aforementioned discharge ducts.
This solution can be advantageous since it can contribute to limit heat losses.
The automatic feeding means 12 for automatically feeding fuel of the pellet type comprise, more in detail, at least one Archimedean screw 26.
The Archimedean screw 26 is rotatably supported at the lower portion 27 of the tank 1 1. More in detail, the Archimedean screw 26 is mounted for rotation inside a tubular body 28 communicating with the lower portion 27 of the tank 11 at its side surface.
The axis of the Archimedean screw 27 is associated, for example with an electric motor or with a geared motor group, not represented in the figures, which is operatively connected to the control board for operating the stove 1.
The tubular body 28, inside which the Archimedean screw 26 is supported, comprises a side hole 29 for communicating with the opening 13 of the furnace 3.
In one preferred embodiment of the invention, the opening 13 of the furnace 3 is foreseen at its rear wall.
In other embodiments of the invention, the opening 13 could be foreseen in other areas of the furnace 3, in relation to specific application requirements.
The Archimedean screw 26 is mounted for rotation according to a rotation axis inclined with respect to the vertical, by a first predetermined angle a, as illustrated in figure 6. Such a first predetermined angle a is mainly selected in relation to the physical characteristics of the pellets, so as to optimise its transportation towards the furnace 3. The side hole 29 of the tubular body 28 communicates with the opening 13 of the furnace 3 through a feeding duct 30.
The feeding duct 30 is inclined, with respect to the vertical by a second predetermined angle β, as illustrated in the same figure 6.
The second predetermined angle β is selected so as to supply the furnace 3 with the desired amount of fuel per unit time, and/or based upon other considerations mainly related to the characteristics for feeding the fuel.
According to another aspect of the present invention, the stove 1 comprises at least one selectively opening and closing valve 31, which is interposed between the automatic feeding means 12 for feeding the fuel and the opening 13 of the furnace 3.
The valve 31 is associated with manual or automatic actuation means.
The valve 31 can be for example of the gate valve type, or of the type that can rotate around an axis, or of yet another kind.
The means for actuating the valve 31, in the case in which they are of the automatic type, can be made up, for example, by an electric motor, by a linear electric actuator, by an electromagnetic actuator, or by another kind, without any limitation.
In the embodiment represented in the figures, the valve 31 is positioned along the fuel feeding duct 30.
In other embodiments, the valve 31 could be foreseen in another position interposed between the automatic feeding means 12 and the opening 13.
In particular, the valve 31 is suitable for preventing the hot fumes from accidentally rising back up from the brazier along the feeding duct 30 of the pellets.
In addition to carrying out this function, in the stove according to the present invention the aforementioned valve 31 also makes it possible to obtain another important technical effect.
According to the present invention, when the heat energy that is accumulated in the heat storage material 7 is sufficient for ensuring a suitable release of heat to the covering panels 8, the stove 1 automatically switches off.
The closure of the aforementioned valve 31 during the switching off step of the stove 1 - i. e. when the desired temperature of the heat storage material 7 is reached - makes it possible to considerably anticipate the stopping of the suction means 6 of the fumes with respect to what occurs in normal known types of pellet stoves.
The early stopping of the suction means 6 makes it possible to keep the stove 1 at the desired temperature for a longer period of time, since the release of heat by the heat storage material 7 occurs over a longer period of time.
Moreover, there is also a consequent saving of energy, indeed, due to the shorter period of time in which the suction means 6 of the fumes are kept operating.
Therefore, in this step it is ensured for there to be a heating of the environment without consumption of fuel or electric energy, optionally except for the minimum energy required in order to supply the control board in the stand-by mode.
It is worth underlining that the heat storage material 7 used in the stove 1 according to the present invention can be for example cement or material of any other kind having similar heat properties.
According to yet another aspect of the present invention, the stove 1 comprises at least one temperature sensor that is suitable for detecting the temperature of the heat storage material 7.
Otherwise, the stove 1 can also comprise a sensor that is suitable for detecting the outside temperature.
In one embodiment of the invention, the stove 1 can comprise a sensor that is suitable for detecting a combination of the temperature of the heat storage material 7 and the outside temperature.
The temperature sensor or sensors foreseen in the stove 1 are operatively connected to the control board for controlling its operation. The operation of the stove 1 according to the invention is, in the light of what has been described, completely intuitive.
The feeding of the fuel of the pellet type into the furnace 1 is carried out in a completely automatic manner without requiring any intervention by the user, apart from when the fuel inside the tank 11 has run out.
The fuel is fed, in the correct amount over time, by simply adjusting the rotation speed of the Archimedean screw 26.
This makes using the stove 1 particularly handy and easy even for users who are not very experienced.
The presence of the valve 11 makes it possible to obtain a considerable saving of energy in terms of supplying electricity to the suction means 6, and even in terms of stove 1 autonomy from a surface temperature point of view.
In other words, the stove 1 keeps its surface temperature optimal for a period of time that is considerably longer with respect to what occurs in storage heating stoves of the known type.
The stove according to the invention can operate with greater autonomy, with respect to conventional wood stoves, with less user intervention.
Moreover, the amount of fuel consumed can be controlled with greater precision: this makes it possible to obtain a considerable saving of material.
It has thus been seen how the invention achieves the proposed objects.
The present invention has been described according to preferred embodiments, but equivalent variants can be conceived without departing from the scope of protection offered by the following claims.

Claims

1. Slow heat release stove, comprising a base (2), a furnace (3) provided with a brazier (4) foreseen inside it, and at least one conveying duct (5) for conveying the combustion fumes produced inside said furnace (3) and associated with respective suction means (6), said at least one conveying duct (5) being at least partially surrounded, along at least one portion of its length, by heat storage material (7) suitable for storing the heat conveyed by the combustion fumes and for progressively releasing it into the surrounding environment to be heated, said stove comprising at least one tank (1 1) for storing the solid fuel, of the pellet type, associated with said base (2) and provided with automatic feeding means (12) for automatically feeding the fuel and communicating with an opening (13) foreseen in said furnace (3).
2. A stove according to claim 1, wherein said heat storage material (7) comprises at least one block of solid material.
3. A stove according to claim 1 or 2, wherein said heat storage material (7) is made up of at least one plurality of blocks (24) stacked in contact on top of one another.
4. A stove according to claim 3, wherein each block (24) of said at least one plurality of blocks (24) delimits a respective recess (25) for housing part of said at least one conveying duct (5), the recess (25) of a block of said at least one plurality of blocks (24) being aligned with the recesses (25) of the other blocks (24) of said at least one plurality of blocks (24).
5. A stove according to claim 3 or 4, wherein said plurality of blocks (24) surrounds said at least one conveying duct (5) for at least half of its side surface.
6. A stove according to any one of the previous claims, comprising covering panels (8) for covering said heat storage material (7) or a finishing covering for covering said heat storage material (7), said covering panels (8) or said finishing covering having an inner face in contact with the heat storage material (7) and a face outside said stove, so that the release of heat stored by said heat storage material (7) to outside occurs through said covering panels (8) or said finishing covering.
7. A stove according to any one of the previous claims, comprising at least two discharge ducts (5) both at least partially surrounded, along at least one portion of their length, by said heat storage material (7).
8. A stove according to claim 7, wherein said at least two discharge ducts (5) include two discharge ducts (5) symmetrical with respect to the longitudinal plane of symmetry of the stove (1).
9. A stove according to claim 8, wherein said two conveying ducts (5) extend substantially vertically and parallel with respect to said furnace (3) and have a first ascending section rising from said furnace (3) and a second descending section, so as to create a path for the combustion fumes (F) first ascending and then descending.
10. A stove according to claim 9, wherein said second section of each of said two conveying ducts (5) extends along a respective side of said stove, and wherein said heat storage material surrounds said second section of said two conveying ducts (5).
11. A stove according to any one of the previous claims, wherein said tank (11) is associated with the rear wall of said base (2).
12. A stove according to any one of the previous claims, wherein said automatic feeding means (12) comprise at least one Archimedean screw (26) mounted for rotation at the lower portion (27) of said tank (11).
13. A stove according to claim 12, wherein said Archimedean screw (26) is mounted for rotation inside a tubular body (28) communicating with said lower portion (27) of said tank (1 1) at its side surface, said tubular body (28) comprising a side hole (29) for communicating with said opening (13) of said furnace (3).
14. A stove according to claim 13, wherein said Archimedean screw (26) is mounted for rotation according to a rotation axis, inclined by a first predetermined angle (a), with respect to the vertical.
15. A stove according to claim 14, wherein said side hole (29) communicates with said opening (13) through a feeding duct (30), inclined by a second predetermined angle (β), with respect to the vertical.
16. A stove according to anyone of the previous claims, comprising at least one selectively opening and closing valve (31) interposed between said automatic feeding means (12) and said opening (13) of said furnace (3).
17. A stove according to claim 16, wherein said valve (31) is associated with manual or automatic actuation means.
18. A stove according to one of claims 16 or 17, wherein said valve (31) is positioned along said feeding duct (30).
19. A stove according to anyone of the previous claims, comprising a fumes expansion chamber (19) foreseen above said furnace (3).
20. A stove according to claim 19, wherein said furnace (3) communicates with said expansion chamber (19) through upper openings (21) at which there are respective deflectors (22).
5 21. A stove according to anyone of the previous claims, wherein said at least one conveying duct (5) for conveying the combustion fumes comprises at least one tubular portion made of metal material placed in contact with said heat storage material (7), or made directly inside said heat storage material (7).
22. A stove according to one of claims 19-21, wherein said expansion chamber (19)0 comprises at least one box-shaped body (20) made of metal material, or it is obtained directly in said heat storage material (7).
23. A stove according to one of claims 19-22, wherein said expansion chamber (19) comprises a plurality of deflectors suitable for slowing down the fumes and for increasing heat-exchange.
5 24. A stove according to one of the previous claims, wherein said heat storage material (7) is cement.
25. A stove according to one of the previous claims, comprising at least one temperature sensor suitable for detecting the temperature of said heat storage material (7) and/or the outside temperature, and/or a combination of the temperature of said heat o storage material (7) and of the external environment.
EP15711846.4A 2014-02-17 2015-02-17 Slow heat release stove Active EP3108181B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR20140042 2014-02-17
PCT/IB2015/051161 WO2015121848A1 (en) 2014-02-17 2015-02-17 Storage heating or slow heat release stove

Publications (2)

Publication Number Publication Date
EP3108181A1 true EP3108181A1 (en) 2016-12-28
EP3108181B1 EP3108181B1 (en) 2020-04-08

Family

ID=50349812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15711846.4A Active EP3108181B1 (en) 2014-02-17 2015-02-17 Slow heat release stove

Country Status (5)

Country Link
EP (1) EP3108181B1 (en)
DK (1) DK3108181T3 (en)
ES (1) ES2804708T3 (en)
PT (1) PT3108181T (en)
WO (1) WO2015121848A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3851745A1 (en) 2020-01-16 2021-07-21 Eva Stampaggi S.r.l. Solid fuel material apparatus for heat generation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB152912A (en) * 1920-02-07 1920-10-28 Hans Schuppmann Improvements in or relating to heating stoves or ranges
GB161100A (en) * 1920-07-02 1921-04-07 Karl Herman Strom Improvements in or relating to stoves
US4628899A (en) * 1982-10-20 1986-12-16 Cronspisen Ab Heating apparatus and method and device for producing the heating apparatus
ATE75836T1 (en) * 1986-02-05 1992-05-15 Siegmar Kohlenbrenner ELEMENT CONSTRUCTION, IN PARTICULAR WALL AND/OR CEILING CONSTRUCTION.
DE19806257A1 (en) * 1997-02-18 1998-08-20 Karl Stefan Riener Furnace for combustion of fuel pellets
AT413755B (en) * 2003-11-20 2006-05-15 Ehgartner Friedrich STORE OVEN
WO2006008762A1 (en) * 2004-07-16 2006-01-26 Filippo Antonio Di Cecilia A pellet heat generator with production of hot water and air
DE102005045236A1 (en) * 2005-09-22 2007-03-29 Georg Geiger double oven
WO2007085038A1 (en) * 2006-01-30 2007-08-02 Friedrich Ehgartner Storage heater and flue and kit for constructing the same
DE102006019057A1 (en) * 2006-04-25 2007-10-31 Johann Rainer Furnace with primary supply and method of operating such a furnace
FI8739U1 (en) * 2009-10-05 2010-05-27 Ari Sakari Saavalainen burn Order

Also Published As

Publication number Publication date
PT3108181T (en) 2020-07-07
DK3108181T3 (en) 2020-07-06
WO2015121848A1 (en) 2015-08-20
EP3108181B1 (en) 2020-04-08
ES2804708T3 (en) 2021-02-09

Similar Documents

Publication Publication Date Title
WO2007103524A3 (en) Outdoor oven
RU2477049C2 (en) Bakery oven
CN202035428U (en) Smoking oven having automatic fuel feeding and igniting device
GB2525629A (en) Wood pellet boiler
CN102273714A (en) Fumigation furnace with automatic feeding by fuel and ignition device
EP3108181B1 (en) Slow heat release stove
RU2470232C2 (en) Furnace
JP2008051471A (en) Boiler device
EP2957828A1 (en) Burner that uses a granular-type solid biomass fuel
JP2014215035A (en) Automatic solid fuel burner
KR101720995B1 (en) Gas rice-cooker with dual exhaust pipe
JP5030111B2 (en) Ash removal means for solid fuel combustion equipment
ITTO20080386A1 (en) WALL-MOUNTED PELLET BOILER FOR HEATING AND DOMESTIC HOT WATER PRODUCTION
KR101390042B1 (en) Stove with a high-energy efficiency
KR20160118705A (en) Fireplace
KR20150118692A (en) a portable korean underfloor heating boiler
KR101738592B1 (en) Pallet heater
KR101594843B1 (en) Heating apparatus
CN204328995U (en) A kind of energy-saving, environmental protection boiler
RU2485414C2 (en) Heating boiler operating on firewood
KR102035114B1 (en) Hot air heater
US2432038A (en) Air-heating furnace
RU2079062C1 (en) Stove
IT201800005273A1 (en) HIGH EFFICIENCY WOOD-BURNING OVEN
WO2014035269A1 (en) Stand-alone fireplace

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20160819

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180302

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190911

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GRUPPO PIAZZETTA S.P.A.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1254884

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602015050226

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20200629

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 3108181

Country of ref document: PT

Date of ref document: 20200707

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20200630

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200808

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200709

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602015050226

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2804708

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20210209

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

26N No opposition filed

Effective date: 20210112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210217

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210217

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1254884

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200408

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20230227

Year of fee payment: 9

Ref country code: FR

Payment date: 20230223

Year of fee payment: 9

Ref country code: ES

Payment date: 20230301

Year of fee payment: 9

Ref country code: DK

Payment date: 20230227

Year of fee payment: 9

Ref country code: AT

Payment date: 20230201

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20150217

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20230207

Year of fee payment: 9

Ref country code: IT

Payment date: 20221027

Year of fee payment: 9

Ref country code: DE

Payment date: 20230223

Year of fee payment: 9

Ref country code: BE

Payment date: 20230227

Year of fee payment: 9

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230515

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20240227

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240301

Year of fee payment: 10

Ref country code: NL

Payment date: 20240226

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20240221

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240228

Year of fee payment: 10

Ref country code: PT

Payment date: 20240220

Year of fee payment: 10