EP2674680A2 - Festbrennstoffvorrichtung zum Erwärmen mit Luft, ein oder mehrere Benutzereinrichtungen und entsprechendes Erwärmungsverfahren - Google Patents

Festbrennstoffvorrichtung zum Erwärmen mit Luft, ein oder mehrere Benutzereinrichtungen und entsprechendes Erwärmungsverfahren Download PDF

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Publication number
EP2674680A2
EP2674680A2 EP13172157.3A EP13172157A EP2674680A2 EP 2674680 A2 EP2674680 A2 EP 2674680A2 EP 13172157 A EP13172157 A EP 13172157A EP 2674680 A2 EP2674680 A2 EP 2674680A2
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EP
European Patent Office
Prior art keywords
heat exchange
heat
air
exchange means
user devices
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.)
Withdrawn
Application number
EP13172157.3A
Other languages
English (en)
French (fr)
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EP2674680A3 (de
Inventor
Marco Palazzetti
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.)
PALAZZETTI LELIO SpA
Original Assignee
PALAZZETTI LELIO SpA
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Publication date
Application filed by PALAZZETTI LELIO SpA filed Critical PALAZZETTI LELIO SpA
Publication of EP2674680A2 publication Critical patent/EP2674680A2/de
Publication of EP2674680A3 publication Critical patent/EP2674680A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2057—Arrangement or mounting of control or safety devices for water heaters using solid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—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
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/188—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas  
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1084—Arrangement or mounting of control or safety devices for air heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/02—Hot-air central heating systems; Exhaust gas central heating systems operating with discharge of hot air into the space or area to be heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/176—Improving or maintaining comfort of users
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/204—Temperature of the air before heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/208—Temperature of the air after heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
    • F24H9/2092—Arrangement or mounting of control or safety devices for air heaters using solid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/06—Solid fuel fired boiler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2230/00—Solid fuel fired boiler

Definitions

  • the present invention concerns a heating apparatus and method using air, fed with solid fuel, such as a biomass, in which the heat produced by a closed heat generator, such as a pellet-burning stove, is used to increase the temperature of air to be distributed to one or more rooms to be heated.
  • a closed heat generator such as a pellet-burning stove
  • the present invention is usable in the home, without however excluding other places or applications in which one or more user devices are heated using air.
  • heat generators fed by biomass such as pellet-burning stoves for example, or wood-burning stoves or fireplaces, to heat homes using air.
  • pellet-burning stoves for example, or wood-burning stoves or fireplaces
  • it is advantageous to channel and distribute the hot air, which is generated thanks to the heat exchange with the combustion fumes, in the rooms to be heated by means of distribution or channeling means, such as for example ventilators or conveyors associated with channeling pipes or tubes.
  • the need to contain the bulk of said heat generators, above all in the home, can limit the thermal power which these are able to develop, and can therefore be insufficient to heat a home, in particular a large one, using the hot air blown in.
  • the heat distribution means able to move large air masses are also cumbersome and would have the disadvantage of being noisy and unsuitable for installation inside a fireplace of the type in question.
  • Document US-A-4,163,199 describes an open wood-burning fireplace to which a heating apparatus is associated to supply supplementary heat to a main heating system using forced hot air.
  • the heating apparatus comprises a grating on which logs of wood burn and which provides a base support for the logs formed by pipes for water which follow a tortuous path.
  • the water once heated by the logs which burn above the grating, is pumped to a heat exchanger mounted in a hot air pipe of the main heating system using forced air.
  • a temperature sensor is provided in the hot air pipe, which supplies signals about the temperature of the hot air to consequently command the pump which determines the flow of hot water in the heat exchanger.
  • the heating apparatus described in US-A-4,163,199 suffers from great heat inefficiency of the open wood fireplace which, being open and without any type of energy recovery, disperses a large quantity of heat to the outside with the combustion fumes. Indeed, only a minimum part of the heat produced by the combustion of the logs can be used, while a large part is dispersed into the environment or with the combustion fumes. In any case, the water circulating in the pipes that form the base of the grating is heated only through contact with the burning logs resting on the base of the grating, and therefore the heat exchange obtained is low efficiency. Consequently, at least for the reasons explained above the heating apparatus described in US-A-4,163,199 can only be used to supply supplementary heat to a main heating system and is not able to supply all the heating power needed for a building or home.
  • Document US-A-2010/0324741 describes a system and method for detecting defects in air circulation units for heating or cooling.
  • Document FR-A-2.920.222 describes a water heating device comprising a heating body, a primary circuit for the circulation of a first liquid and a secondary hydraulic circuit associated with a heat exchanger and an electronic temperature regulator.
  • One purpose of the present invention is to obtain an apparatus and a method for the complete heating of one or more user devices of the domestic type, fed with solid fuel, which does not need to receive supplementary heat and which allows to render more effective and efficient the distribution of the heat produced by a biomass generator, allowing to increase the thermal power delivered by the generator, given the same bulk thereof.
  • Another purpose of the present invention is to obtain a heating apparatus and method which is able to heat a home completely using air as the heating fluid, and which is silent, economical, not bulky and easy to install.
  • Another purpose of the invention is to obtain a heating apparatus and method which is able to deal with variations in temperature punctually and promptly, limiting the length of the transitories both when switched on and when switched off
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a heating apparatus uses heated air to heat one or more user devices connected to it, such as for example one or more rooms of a home.
  • the apparatus according to the present invention comprises a closed heat generator fed with solid fuel, in particular a biomass, having a closed combustion chamber and first heat exchange means that cooperate with the combustion chamber.
  • the first heat exchange means are configured to carry out the heat exchange between the fumes deriving from the combustion of the biomass and a heat-carrying liquid which flows in the first heat exchange means.
  • the heating apparatus also comprises second heat exchange means, of the air-liquid type, external and distanced from the closed heat generator, in which air flows to be heated by means of heat exchange with the heated liquid and is distributed or channeled to the user devices to be heated.
  • the second heat exchange means are fluidically connected to the first heat exchange means, so as to heat the air by means of the heated liquid coming from the first heat exchange means.
  • the present invention allows great heat efficiency and an effective heat recovery, to the great advantage of the heat exchange with the heat-carrying liquid in the first heat exchange means. Thanks to the high energy yield of the closed heat generator, the thermal power exchanged in the first and second heat exchange means will also be very high, allowing to heat the room, home or building autonomously and completely, without needing supplementary heating, where the present invention is installed.
  • the present invention obtains a first heat exchange between the heat deriving from the combustion of the biomass, in particular the combustion fumes, and the heat-carrying liquid, allowing to increase the potential of the closed heat generator, given the same sizes, compared with a known type of biomass generator, and all the more so compared with an open wood-burning fireplace which has low heat efficiency, thanks to the greater specific heat of the liquid used compared with air.
  • the apparatus according to the present invention is efficient from the energy point of view, easy, convenient to use also in the home environment.
  • the necessary increase in sizes of the closed heat generator is compensated by the greater efficiency of heat exchange between the liquid and the combustion fumes, taking into account that, thanks to the closed configuration of the heat generator and the closed combustion chamber which is possibly insulated toward the outside, the heat dispersion is drastically reduced, and it is possible to exploit to the utmost the heat produced by the combustion of the solid fuel.
  • the necessary over-sizing of the air-type heat exchange means does not affect either the heating apparatus itself, or the space where the apparatus is installed because, as described above, they can be advantageously installed in a separate room or compartment, distanced from the space where the closed heat generator is installed.
  • the second heat exchange means comprise at least a heat exchanger and a first distribution circuit, for the circulation of hot air from the heat exchanger to the user devices, and vice versa.
  • the first circuit has at least a feed segment to the user devices and a return segment from the user devices, to direct the air toward the heat exchanger, in which a second circuit is also provided, provided with a feed pipe and a return pipe, for the circulation of the heated liquid from the first heat exchange means toward the heat exchanger, and vice versa.
  • the second heat exchange means also comprise air movement means, such as for example a ventilator, associated to the return segment of the first distribution circuit, to take the air from the user devices and thrust it at least toward the heat exchanger.
  • air movement means such as for example a ventilator, associated to the return segment of the first distribution circuit, to take the air from the user devices and thrust it at least toward the heat exchanger.
  • the apparatus comprises first temperature measuring means, such as probes, sensors or suchlike, associated to the return segment of the first circuit and suitable to transmit an electric signal relating to the temperature of the air in the return segment, and an electronic control unit, inside the closed heat generator, suitable to receive and process the electric signal to carry out a feedback control of the combustion of the biomass, in order to maintain the temperature around a value set by a user.
  • first temperature measuring means such as probes, sensors or suchlike
  • An apparatus made according to the invention can also comprise second temperature measuring means associated to the feed segment of the distribution circuit and suitable to transmit an electric signal relating to the temperature of the air in the feed segment.
  • An electronic control unit, inside the heat generator, is suitable to receive and process the electric signal to carry out a control of the quantity of liquid circulating in the second circuit, in order to maintain the temperature in a range suitable to guarantee a suitable comfort in the user devices.
  • the apparatus comprises third temperature measuring means associated at least to the feed pipe of the second circuit and suitable to transmit an electric signal relating to the temperature of the liquid in the feed pipe, and an electronic control unit, inside the closed heat generator, suitable to receive and process the electric signal to carry out a control of the operating conditions of the liquid in the second circuit, and in the first heat exchange means.
  • the apparatus comprises second heat exchange means concentrated in a single position from which to send the heated air to the different user devices.
  • the apparatus comprises a plurality of second heat exchange means distributed in the rooms of the different user devices and fluidically connected to the first heat exchange means of the closed heat generator.
  • the closed heat generator is a pellet-burning stove.
  • the first heat exchange means comprise a heat exchange chamber, adjacent to the combustion chamber and containing a heat-carrying liquid.
  • the first heat exchange means comprise a fumes-heat-carrying liquid exchanger, in particular fumes-water.
  • This heat exchange can have a great efficiency, greater for example than a heat exchange from contact between the fuel and pipes in which a heat-carrying liquid flows.
  • a heat exchange wall is provided between the first heat exchange means and the combustion chamber.
  • the closed heat generator comprises automatic or semi-automatic feed means of the fuel toward the combustion chamber. This allows, for example, to program the heating cycles, which improves energy efficiency.
  • the present invention also concerns a method to heat, using air, one or more user devices, which comprises a first step in which the combustion of a biomass is carried out, in a combustion chamber closed toward the outside of a closed heat generator, and in which the heat exchange between the fumes deriving from the combustion and a heat-carrying fluid flowing inside the first heat exchange means is also carried out, said first heat exchange means being inside the closed heat generator and cooperating with the combustion chamber.
  • the method in question also comprises a second step in which air to be heated and distributed to the user devices is made to flow inside second heat exchange means, of the air-liquid type, external and distanced from the closed heat generator, and connected fluidically to the first heat exchange means, to be heated by means of the heated liquid coming from the first heat exchange means.
  • a heating apparatus according to the present invention is indicated by the reference number 10 and can be used to heat and distribute hot air toward one or more user devices 11, in this case one or more rooms of a house.
  • the apparatus 10 comprises a closed heat generator for the combustion of a biomass, in this case a stove 12 fed with pellets, positioned in a space 13 that is distant from, adjacent to or below the user devices 11.
  • the stove 12 is provided with a combustion chamber 17, closed for example by a closing door, and possibly advantageously insulated toward the outside by suitable insulation means, and with first heat exchange means, in this case a heat exchange chamber 14, adjacent to the combustion chamber 17 and containing a heat-carrying liquid, in this case water.
  • the heat exchange chamber 14 is substantially a fumes-water heat exchanger, or fumes-heat-carrying liquid in general.
  • a heat exchange wall 33 may be provided between the heat exchange chamber 14 and the combustion chamber 17, to allow the heat exchange between the combustion fumes that develop from the combustion chamber 17 and the heat-carrying liquid in the heat exchange chamber 14.
  • the apparatus 10 also comprises second heat exchange means 18, air-water or in general air-liquid which, unlike in the state of the art, are an external entity, separate and distanced from the stove 12.
  • the second heat exchange means 18 comprise a ventilator 15, which functions as a mean to move the heating air, and a heat exchanger 16, which can be for example an air-water heat exchange battery, such as a heat exchanger with bundles of tubes or another type of heat exchanger able to exchange heat between a liquid, such as water, and the heating air.
  • a ventilator 15 which functions as a mean to move the heating air
  • a heat exchanger 16 which can be for example an air-water heat exchange battery, such as a heat exchanger with bundles of tubes or another type of heat exchanger able to exchange heat between a liquid, such as water, and the heating air.
  • the function of the ventilator 15 is to make the heating air circulate inside a first circuit, or distribution circuit 19, taking the air from a return segment 20 of the circuit 19.
  • the arrows F indicate the path of the air along the distribution circuit 19.
  • the return segment 20 functions as an intake pipe for the ventilator 15, which takes in the air arriving from the user devices 11 and thrusts it forcedly through the heat exchanger 16, in which the air is heated by the hot water arriving from the heat exchange chamber 14.
  • the air thus heated then exits from a feed segment 21 of the distribution circuit 19, which functions as a distributor pipe through which the hot air is distributed to the user devices 11.
  • the ventilator 15 also provides the necessary thrust to the heated air toward the user devices 11.
  • the heat exchange inside the heat exchanger 16 is controlled by an electronic control unit 22, integrated into the stove 12, to which a first sensor 23 and a second sensor 24 transmit the electric signals relating to the measurement of the air temperature respectively inside the return segment 20 and the feed segment 21, that is, upstream and downstream of the heat exchanger 16.
  • the first sensor 23 thus measures the temperature Ti of the air entering the ventilator 15, which in practice corresponds to the temperature of the air in the user devices 11, and which allows the electronic control unit 22 a constant comparison with a desired temperature Tx set by the user.
  • the comparison is part of a feedback control process of the heating of the user devices 11, carried out by the electronic control unit 22.
  • the electronic control unit 22 according to predefined programs and procedures, manages the combustion and heat exchange inside the stove 12.
  • a third sensor 25, which measures the temperature of the water exiting from the heat exchange chamber 14, automatic or semi-automatic feed means of the fuel, such as for example a feed motor 26, for example of the screw type, to feed pellets into the combustion chamber 17, a fume ventilator 27, to discharge the fumes from the combustion chamber 17, and a fourth sensor 28, which allows to measure the temperature of the fumes exiting from the combustion chamber 17, are all connected to the electronic control unit 22.
  • the electronic control unit 22 is also able to process the electric signals arriving from the third sensor 25 and the fourth sensor 28 referring to the temperatures respectively of the water and the fumes, in order to consequently vary the speed of rotation of the fumes ventilator 27 and the feed motor 26. In this way, the electronic control unit 22 guarantees the thermal power needed to generate the desired quantity of heat, and maintains a ratio between fuel and comburent that is suitable for a correct combustion.
  • the same electronic control unit 22 also controls a pump 29, also integrated into the stove 12, disposed upstream of the heat exchange chamber 14 and with the function of forcing the circulation of the water inside a second circuit, or hydraulic circuit 30, from the heat exchange chamber 14 to the heat exchanger 16 and vice versa.
  • the water exiting from the heat exchange chamber 14 at a desired temperature Ta, measured by the third sensor 25, is transferred through a feed pipe 31 to the heat exchanger 16, in which it gives up heat to the air transiting therein due to the effect of the thrust of the ventilator 15, in order to heat it.
  • the heat exchange described above allows to obtain a desired temperature Tf of the air transiting in the feed segment 21, dependent on the temperature Ta of the water and on temperature Ti.
  • the water thus cooled passes through a return pipe 32 and returns, pumped by the pump 29, into the heat exchange chamber 14, to be heated again by the heat of the fumes present in the combustion chamber 17.
  • the feed pipe 31 and the return pipe 32 fluidically connect the second heat exchange means 18 and the heat exchange chamber 14 of the stove 12, and have limited sizes, defined by a cross section having a diameter D comparable to the pipes commonly used in domestic heating plants and coming within a range of values comprised between 16 mm and 37 mm. This limited size does not affect the bulk of the apparatus 10 and allows the pipes to be disposed in view, without compromising the esthetic appearance of the apparatus 10.
  • the combustion is advantageously controlled continuously and Ti is used as feedback value, so as to allow the electronic control unit 22 a constant and prompt response, to prevent transitories in which an excessive lowering of temperature can occur in the user devices 11.
  • the electronic control unit 22 is able to continuously compare the temperature Ti with temperature Tf at the end of heat exchange, measured by the second sensor 25, allowing the electronic control unit 22 to constantly control the operating effectiveness of the heat exchanger 16.
  • the ventilator 15 is connected to the control unit 22, which is able to vary the speed of rotation thereof, in order to manage the quantity of air transiting in the heat exchanger 16 and which consequently is distributed to the user devices 11.
  • the control of the ventilator 15 depends on the increase in air temperature (Tf-Ti) registered by the second sensor 25 and allows to not excessively over-heat the air intended for the user devices 11, to promote in them optimum comfort.
  • thermal power required for heating an average size home is generally comprised between 5 kW and 12 kW.
  • the present invention since the heating and distribution of air are separate and distanced from the stove 12, the latter can have limited bulk, compatible with installation in a single domestic space, such as the room of a home.
  • the ventilator 15 even if large and noisy, is in any case separate and distanced from the stove 12 and the space 13 in which the stove 12 is installed.
  • the air distribution circuit 19 even if considerable in size, in particular with regard to the diameter of the pipes, which generally have a diameter from about 80 mm to about 200 tnm, is no longer directly connected at exit from the stove 12 and can be located, so as to be hardly visible or not visible at all, in an installation zone, or housing compartment 35, made for the purpose, possibly insulated acoustically, such as for example a false ceiling made in the space 13 in which the stove 12 is installed, or in another technical compartment.
  • the water feed pipe 31 and return pipe 32 are provided, which typically have very limited diameters, bulk and esthetic impact.
  • the present invention solves the problem of bulk and noisiness of the ventilator 15, which can easily be positioned in the installation zone, or housing compartment 35.
  • the second heat exchange means 18 are shown by way of example, concentrated in a single position from which the heated air is sent to the different user devices 11 by means of the distribution circuit 19.
  • figs. 3 and 4 show variants in which a plurality of second heat exchange means 18 are provided, distributed in the spaces of the different user devices 11 and fluidically connected, on the water or in general liquid side, to the heat exchange chamber 14 of the stove 12.
  • the functioning principle is the same as in the forms of embodiment described with reference to figs. 1 and 2 , with a first heat exchange between combustion fumes and water, or in general liquid, in correspondence with the stove 12, but in any case providing to carry out a plurality of localized heat exchanges in the different user devices 11.
  • the distribution circuit 19 can be considered locally, for each user device 11, as the local stream of air entering and exiting from the second heat exchange means 18, indicated by arrows C in figs. 3 and 4 .
  • Fig. 3 shows in particular a variant in which the second heat exchange means 18 are connected, on the water or liquid side, along a circuit 39 in series one to the other with respect with the stove 12 and the corresponding heat exchange chamber 14.
  • Fig. 4 shows instead the variant in which the different second heat exchange means 18 are each connected, on the water or liquid side, by means of their own feed and return circuit 49 to the stove 12 and the corresponding heat exchange chamber 14, associated with which a suitable collector is provided, to which the various circuits 49 refer.

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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)
  • Computer Hardware Design (AREA)
  • Solid-Fuel Combustion (AREA)
EP13172157.3A 2012-06-15 2013-06-14 Festbrennstoffvorrichtung zum Erwärmen mit Luft, ein oder mehrere Benutzereinrichtungen und entsprechendes Erwärmungsverfahren Withdrawn EP2674680A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000113A ITUD20120113A1 (it) 2012-06-15 2012-06-15 Apparato a combustibile solido per il riscaldamento ad aria di una o piu' utenze, e relativo metodo di riscaldamento

Publications (2)

Publication Number Publication Date
EP2674680A2 true EP2674680A2 (de) 2013-12-18
EP2674680A3 EP2674680A3 (de) 2018-03-14

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE202015107108U1 (de) 2014-12-29 2016-03-10 Palazzetti Lelio S.P.A. Vorrichtung zur Erzeugung von Brauchwarmwasser und zur Klimatisierung eines oder mehrerer Räume eines Gebäudes
CN111637628A (zh) * 2020-05-22 2020-09-08 珠海格力电器股份有限公司 防过热结构、热水器及其控制方法、计算机可读存储介质

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