EP4043787A1 - Biofireplace avec contrôle automatique de la combustion - Google Patents
Biofireplace avec contrôle automatique de la combustion Download PDFInfo
- Publication number
- EP4043787A1 EP4043787A1 EP21169576.2A EP21169576A EP4043787A1 EP 4043787 A1 EP4043787 A1 EP 4043787A1 EP 21169576 A EP21169576 A EP 21169576A EP 4043787 A1 EP4043787 A1 EP 4043787A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- evaporator
- housing
- biofireplace
- preheater
- 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- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 49
- 239000000446 fuel Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000011490 mineral wool Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 238000009792 diffusion process Methods 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 238000013461 design Methods 0.000 description 10
- 239000007791 liquid phase Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 102220488234 Uromodulin-like 1_F23D_mutation Human genes 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
- F23K5/22—Vaporising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
- F23D5/12—Details
- F23D5/18—Preheating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/04—Feeding or distributing systems using pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/002—Regulating fuel supply using electronic means
-
- 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
- F24C5/00—Stoves or ranges for liquid fuels
- F24C5/02—Stoves or ranges for liquid fuels with evaporation burners, e.g. dish type
-
- 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
- F24C5/00—Stoves or ranges for liquid fuels
- F24C5/16—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
- F23C2700/02—Combustion apparatus using liquid fuel
- F23C2700/026—Combustion apparatus using liquid fuel with pre-vaporising means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2208/00—Control devices associated with burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14641—Special features of gas burners with gas distribution manifolds or bars provided with a plurality of nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/30—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/14—Controlling burners with gasification or vaporizer elements
Definitions
- the technical field to which the invention relates in general belongs to the field of heating i.e., fireplaces, and specifically relates to a biofireplace which uses bioethanol as fuel.
- the subject of the invention is classified and marked with the basic classification symbol F24C 5/02 which defines ovens and stoves fired with liquid fuels with evaporating burners, as well as the secondary classification symbol F23D 5/04 relating to burners in which liquid fuel evaporates in a partially enclosed combustion chamber, with or without chemical transformation of the evaporated fuel, and F23N 5/00 defining combustion control systems.
- F24C 5/02 which defines ovens and stoves fired with liquid fuels with evaporating burners
- F23D 5/04 relating to burners in which liquid fuel evaporates in a partially enclosed combustion chamber, with or without chemical transformation of the evaporated fuel
- F23N 5/00 defining combustion control systems.
- the technical problem to be solved by the present invention consists in the following: how to solve design of a fireplace that uses 97-99 % bioethanol as fuel, in which a microprocessor with PWM width modulation is used for optimization to provide complete combustion of alcohol vapors, which enables preheating of vapor during operation before entering the burner with minimal engagement of electric heaters, which is safe in cases of impact or mechanical shocks, the presence of carbon monoxide and carbon dioxide, as well as in case of power failure of electronic components of the system, unforeseen absence of flame, and besides is distinguished with reduced flame temperature, and thus oxidation of atmospheric nitrogen (NO and NO2) and which is more economical in terms of saving electricity, and at the same time is easily adaptable in design to the forms and requirements for modern aesthetic interior design.
- a microprocessor with PWM width modulation is used for optimization to provide complete combustion of alcohol vapors, which enables preheating of vapor during operation before entering the burner with minimal engagement of electric heaters, which is safe in cases of impact or mechanical shocks, the presence of carbon mon
- Bioethanol fireplaces have much greater variability in shape and technical characteristics compared to other heating devices, because they are used for additional heating.
- the main purpose is decorative, so their design is often more important than its working properties.
- Bioethanol used as a fuel is a chemical compound with well-known chemical and physical properties; whose names: ethanol, bioethanol or simply alcohol, refer to ethanol products. Most alcohol fireplaces are designed to burn liquid ethanol.
- the ethanol combustion process is a chemical reaction expressed as follows: CH 3 CH 2 OH + 3O 2 ⁇ 2CO 2 + 3H 2O
- This stoichiometric equation gives the theoretical amount of oxygen required for the complete oxidation of ethanol, which is three molecules of oxygen, with two molecules of carbon dioxide and three molecules of water. This is a theoretical relationship, while in practice, in order to achieve a good and complete combustion process, the device must be adapted to the specific environment or location. In addition, it is also important to keep in mind that the oxidizer most commonly used is not pure oxygen, but air composed of 21 % oxygen and about 79 % nitrogen. Nitrogen "dilutes" combustion products and reduces the combustion temperature, and in addition is responsible for the formation of nitrogen oxides, which are formed at high flame temperatures, even if the fuel does not contain nitrogen.
- the present invention contains a much more efficient technical solution for obtaining vapor from bioethanol, which means that the conversion from liquid bioethanol to the gaseous phase is performed under controlled conditions.
- the preheater is designed so that in addition to increasing the temperature of bioethanol, it also has the function of cooling the burner itself, which ensures a lower temperature of the device itself.
- the design of the present biofireplace avoids such mistake, because in the event of a power failure, the system automatically closes with a solenoid valve, so the amount of alcohol vapor generated in the evaporator does not increase, and at the same time opens a valve that returns liquid and gaseous fuel to the tank.
- the heater is located below the burner itself, whereby during the combustion of vapor, its temperature is constantly increasing and thus increased propagated to the device.
- the present invention provides that the heating of liquid fuel is performed in a capillary tube in a preheater which takes over the heat of the burner during operation, the temperature of which decreases as a result. This results in a reduction in the use of electricity necessary for the complete conversion of liquid bioethanol to the gaseous state in the evaporator.
- Patent application WO 2013107455 A2 published on July 25, 2013 entitled “Electronically controlled burner” shows a device consisting of at least one fuel tank connected to an evaporation accelerator whose heating is achieved by a heater, a flame carrier and an ignition element.
- the device contains an electronically controlled burner.
- a sprayer is placed in the central part of the burner, providing bioethanol vapor delivery to the burner, on the upper plate of which there are openings for combustion.
- the disadvantage of this solution is that due to the use of a ball that regulates the operation of the sprayer, there are frequent delays. This is avoided by a simple evaporator solution with a perforated tube through the openings of which bioethanol vapor comes out evenly distributed in the burner.
- the biofireplace is constructed consisting of assemblies: tank with peristaltic pump, preheater, evaporator, burner and electronic equipment that allows management and control of bioethanol combustion process, which uses a microprocessor to optimize alcohol combustion with PWM width modulation, which enables economical preheating of vapor leaving to the burner, and is safe in cases of mechanical shocks, the presence of carbon monoxide and carbon dioxide, as well as in case of power failure of electronic system components, unforeseen absence of flame, and in addition, it is characterized by reduced flame temperature and oxidation of atmospheric nitrogen (NO and NO 2 ), higher efficiency, i.e. saving of electricity, and at the same time it is easily adaptable to the forms and requirements for modern aesthetic interior design.
- NO and NO 2 atmospheric nitrogen
- the essence of the invention is the construction of a preheater which raises the temperature of liquid bioethanol before entering the evaporator, as a result of which the use of electric heaters is reduced to a minimum, because the heat generated as a byproduct of bioethanol vapor combustion in the burner is used to heat bioethanol.
- This is achieved by positioning the preheater immediately below the burner, where a copper capillary tube is inserted into the groove in the preheater housing, which extends axially along the entire lower surface of the burner, effectively absorbing the burner heat, resulting in a decrease of atmospheric nitrogen oxidation NO and NO 2 .
- the novelty of the invention is the construction of the burner which provides the optimal ratio of fuel and air and their mixing, whereby provide maximum combustion efficiency with minimal occurrence of by-products that otherwise occur as a result of incomplete combustion.
- the burner is designed in such a way that the flame that is created in it is uniform along the entire length, and the combustion is laminar and diffusion and does not have to be controlled manually.
- the essence of the invention is the installation of a microprocessor whose primary role is flame height control achieved by digital speed control of the stepper motor of a peristaltic dosing pump, where the microprocessor allows defining limit values of CO 2 and CO concentrations, at which the device automatically shuts off.
- the novelty of the invention is reflected in the optimization of the evaporator by automatic correction of the heater switching on, which thus maintains a constant temperature necessary for the complete conversion of liquid bioethanol into vapor.
- the device according to the present invention has multiple advantages, of which several are the most important, namely:
- the present invention relates to a biofireplace with automatic combustion control and as can be seen from the figures of the attached drawing it consists of assemblies: tank 1 with peristaltic pump 2, preheater 3, evaporator 4, burner 8 and electronic equipment that allows management and control over bioethanol combustion process.
- the tank 1 is of a hollow square shape, made of stainless steel - Inox, with an opening 19 on the upper side to which is connected the hose 49 for refueling from the bottle 50 by means of a peristaltic pump 17.
- the tank 1 is connected by means of a pipe 20 to the suction part of the peristaltic pump 2 whose delivery part is connected to the preheater 3 through the pipe 21.
- an ultrasonic sensor 16 of the fuel level which at any time monitors the information on the amount of fuel and forwards it to the microprocessor 15.
- Bioethanol used for the present biofireplace is of the concentration 97-99 %.
- the present invention envisages the use of a microprocessor 15 that works with digital signals, so that the control of the combustion process is fully automated and digitized.
- the basic function of the microprocessor 15 is to monitor changes in the control parameters of the combustion process in real time and control the actuating peripherals (such as a peristaltic pump and preheater), in order to maintain constant operation without changing the required flame height. In this way, a flame uniform over the entire length of the burner 8 was obtained, with complete, laminar and diffusion combustion.
- the microprocessor 15 also enables the definition of limit values for temperature, CO 2 or CO concentrations, at which the device switches off automatically.
- the preheater 3 as seen in Figures 2 and 3 , which serves to raise the temperature of the liquid bioethanol before entering the evaporator 4 according to the invention, is positioned below the burner 8 and consists of a thermally insulated aluminum housing closed on the upper side by an aluminum plate 25 with a circular opening 46 and a groove 37 into which a copper capillary tube 22 is inserted.
- the preheater housing 3 is closed by an aluminum plate 34 on which an opening 45 is made in accordance with the opening 46.
- An inlet 48 is passed through these openings through which bioethanol vapor enters the burner 8.
- the power control of heaters 5, 6 is made by PWM (Pulse Width Modulation).
- PWM Pulse Width Modulation
- Digital control of analog circuits drastically reduces the cost of the control system and achieves significant energy savings.
- Today's microcontrollers generally have built-in PWM peripherals which further facilitates implementation.
- the main advantage of using PWM is that the signal remains digital all the way from the processor to the receiver, so DA conversion is not required. By using a purely digital signal, the noise effect is minimized, which is a great advantage over analog transmission and PWM control of the dosing pump motor.
- Microprocessors and PWM modulators are well known in the state of art and their operation has not been explained in particular detail.
- the burner assembly 8 forms an aluminum housing 28 which is open on the upper side and via on the lower side via the upper plate 25 connected to the preheater 3 by rigid connection.
- the perforated aluminum tube 26 is inserted of the square cross section.
- the perforation of the pipe 26 is made by circular openings 27, the diameter and arrangement of which are calculated in such a way as to allow even distribution of vapor and creation of a laminar diffusion flame along the entire length of the burner 8.
- the housing 28 is a chamber in which alcohol vapors are mixed with oxygen from the air, and complete combustion is achieved by dosing fuel with a peristaltic pump 2 in a value defined by the maximum allowed flow rate controlled by the microprocessor 15.
- a temperature sensor 18 is installed at the inlet of the aluminum tube 26 of the burner, which informs the microprocessor 15 that the appropriate temperature of the alcohol vapor has been reached, i.e., that the alcohol vapor has entered the burner 8 and that the initial ignition can be performed, thus starting the combustion process.
- the fuel from the preheater 3 through the capillary tube 22 goes to the evaporator assembly 4 which is formed of a metal housing 35 in the form of a hollow square in the centers of the shorter sides of which, threaded flanges 44 are made in which are disassembly axially fixed mutually separated heaters 5, 6, whereby the heater 5 is located at the inlet of the evaporator 4, while the heater 6 is located at the outlet of the evaporator 4.
- the evaporator assembly 4 which is formed of a metal housing 35 in the form of a hollow square in the centers of the shorter sides of which, threaded flanges 44 are made in which are disassembly axially fixed mutually separated heaters 5, 6, whereby the heater 5 is located at the inlet of the evaporator 4, while the heater 6 is located at the outlet of the evaporator 4.
- the solenoid valve 7 is normally open and its function is to immediately close the vapor supply to the burner 8 in case of irregularities in the operation of the system and to deliver information on incorrect and unsafe operation to the microprocessor 15. From Figure 4 and 5 , it can be seen that there are temperature sensors 11, 12 in the evaporator housing 35, wherein the sensor 11 measures the fuel temperature in the part of the capillary tube 23 around the heater 5, while the sensor 12 measures the fuel temperature in the part of the capillary tube 23 around the heater 6 at the evaporator outlet 4.
- the optimal temperature for biofireplace operation is achieved by PID control whose function is to heat bioethanol near heaters 5, 6 near the point of transition to ethanol vapor, in cases when this is not achieved by preheater 3, which is the case when starting the device or during the first few minutes when the heat energy of the burner 8 was not transferred to the preheater 3.
- Temperature sensors 11, 12 after measuring the temperature of bioethanol deliver the read data to the microprocessor 15 which by PWM control 14 controls the power of the heater 5, 6 to obtain a temperature of about 70 ° C at which the liquid bioethanol is completely converted to vapor.
- optimally preheated bioethanol vapor through the insulated capillary tube 23 reaches the inlet 48 passed through the openings 45, 46.
- the sides of the housing 35 are on both sides insulated with a layer 36 of mineral wool.
- the lid 38 of the evaporator, Figures 7 and 8 is made of the same material as the housing 35 has a "P" profile and dimensions equal to the upper open surface of the housing 35.
- At both ends of the housing 35 are vertical tubular outlets 39, 40 through which the ends of the pipes 22, 23 are passed.
- the outlets 39, 40 are filled with stone wool 43, and the capillary tube 23 is insulated with liquid ceramics.
- four washers 41 are positioned by means of which the lid 38 is fixed by screws through the openings 42.
- the principle of operation of the present device takes place as follows: when starting the device, the microprocessor 15 gives a command to the peristaltic pump 2 to fill the evaporator 4 with liquid bioethanol. At the same time, heaters 5, 6 convert liquid bioethanol into vapor. When the temperature sensors 11, 12 deliver information to the microprocessor 15 that the temperature at which the bioethanol vapor has been produced is reached, the high voltage spark of the igniter 9 perform initial ignition, thus starting the combustion process. A flame detection sensor 10 is installed in the burner 8, which controls the ignition success, i.e., whether it is necessary to restart the ignitor 9, which is defined by the microprocessor 15. The described process includes how to start the device.
- the combustion of bioethanol in the burner 8 continues with the operating mode which takes place by transporting fuel from the tank 1 by means of a peristaltic pump 2 attached on the pipe 20 to the preheater 3 which uses the thermal energy generated by burning bioethanol vapor in the burner 8 so that liquid fuel enters the evaporator 4 preheated.
- the thermal energy obtained by operation of the burner 8 spreads to the evaporator 4 and is sufficient to convert the liquid bioethanol into vapor without switching on the heaters 5, 6.
- the fuel temperature is equal to ambient temperature, so at lower starting temperatures device requires operation of the heaters 5, 6.
- heaters 5, 6 are switched off and preheating of fuel, i.e.
- the process of stabilizing the system is regulated by microprocessor 15 by the PID regulation (with minimum deviation from the initial set temperature equilibrium parameters), whereby a smooth process of evaporation of liquid fuel is achieved.
- the temperature sensors 11, 12 deliver information to the microprocessor 15, which controls the operation of the heaters 5, 6 in order to achieve the optimal operating temperature of bioethanol vapor of about 70 ° C.
- Circular openings 27 are calculated to ensure even distribution of vapor along the entire burner 8, resulting in even flame along the complete length.
- the combustion chamber in the housing 28 allows optimal mixing of alcohol vapors with oxygen from the air resulting in laminar diffusion combustion.
- Regular shutdown of the system is performed by the microprocessor control 15 so that the normally open solenoid valve 7 loses voltage and closes the flow of fuel into the capillary tube 23, as a result of which combustion in the burner 8 stops almost instantly, burning all remaining vapor in the aluminum tube 26.
- normally closed solenoid valve 24 installed on the pipe 29 loses voltage and opens the return line after which the remaining vapor in the system is returned to the tank 1, where it is cooled and converted into a liquid state. In this way, the retention of alcohol vapor in the system as well as the creation of overpressure are avoided.
- the forced shutdown of the biofireplace due to malfunctions is controlled by a microprocessor 15, whose operation is based on monitoring parameters such as the presence of carbon monoxide using a sensor 30 that detects the presence of the same, then the presence of ethanol vapor inside the device using the sensor 31, horizontality of the device by means of sensors 32 and mechanical shocks or impacts by means of sensors 33 (tilt sensor).
- a problem in operation can occur for an unknown reason (the flame has been extinguished), which is registered by the flame presence sensor 10 which sends a signal via the microprocessor 15 to the ignitor 9 to restart the initial ignition process.
- the process of initial ignition is limited in time and after a certain time, if a continuous combustion process is not established, the microprocessor 15 performs forced shutdown of the system. Monitoring of the device operation is enabled by the display 47.
- the invention is suitable for serial production and its application is especially recommended in cases when additional heating is required in the living, working and rest areas.
- the application of the invention is especially recommended in buildings and spaces that need to meet high aesthetic criteria.
- the device can be used to equip a space where people of all ages live.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spray-Type Burners (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RS20210169A RS20210169A1 (sr) | 2021-02-11 | 2021-02-11 | Biokamin sa automatskom kontrolom sagorevanja |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4043787A1 true EP4043787A1 (fr) | 2022-08-17 |
Family
ID=75690095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21169576.2A Withdrawn EP4043787A1 (fr) | 2021-02-11 | 2021-04-21 | Biofireplace avec contrôle automatique de la combustion |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4043787A1 (fr) |
| RS (1) | RS20210169A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379474A (zh) * | 2023-02-22 | 2023-07-04 | 中国航发四川燃气涡轮研究院 | 一种航空发动机燃油喷嘴热防护结构 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL447882A1 (pl) * | 2024-02-28 | 2025-09-01 | Biopasja Spółka Z Ograniczoną Odpowiedzialnością | Urządzenie paleniskowe dekoracyjno - grzewcze na paliwa płynne |
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| CN211502903U (zh) | 2019-12-26 | 2020-09-15 | 广东吉宝电器科技有限公司 | 一种醇类燃烧灶的燃料供给模块及其醇类燃烧器具 |
| CN211976941U (zh) * | 2020-03-31 | 2020-11-20 | 杭州尚逸科技有限公司 | 一种室内使用的新型取暖壁炉 |
| CN212081300U (zh) * | 2018-10-29 | 2020-12-04 | 代普良 | 一种气化燃烧装置 |
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| PL222427A1 (fr) | 1979-03-06 | 1981-02-27 | Philips Nv | |
| EP2028420A1 (fr) | 2007-08-22 | 2009-02-25 | PLANIKA Sp. z.o.o. | Système pour l'alimentation automatique de fours en combustible liquide |
| WO2009098167A1 (fr) * | 2008-02-04 | 2009-08-13 | Brisach | Cheminee pour combustion d'un carburant liquide avec de l'air |
| US8622053B2 (en) | 2009-03-16 | 2014-01-07 | Planika Sp. Z O.O. | Burner and method of its operation |
| EP2549182A1 (fr) | 2011-07-21 | 2013-01-23 | PLANIKA Sp. z.o.o. | Un fourneau à combustible liquide pour une cheminée |
| WO2013107455A2 (fr) | 2012-01-19 | 2013-07-25 | Decoflame Aps | Brûleur à commande électronique |
| DE102012106598A1 (de) * | 2012-07-09 | 2014-05-22 | Mikolaj Woyna | Verbrennungsvorrichtung für flüssige Kraftstoffe sowie Verfahren dazu |
| EP3211304A1 (fr) | 2016-02-25 | 2017-08-30 | Ifire Bvba | Cheminée au bioéthanol améliorée |
| CN212081300U (zh) * | 2018-10-29 | 2020-12-04 | 代普良 | 一种气化燃烧装置 |
| CN211502903U (zh) | 2019-12-26 | 2020-09-15 | 广东吉宝电器科技有限公司 | 一种醇类燃烧灶的燃料供给模块及其醇类燃烧器具 |
| CN211976941U (zh) * | 2020-03-31 | 2020-11-20 | 杭州尚逸科技有限公司 | 一种室内使用的新型取暖壁炉 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379474A (zh) * | 2023-02-22 | 2023-07-04 | 中国航发四川燃气涡轮研究院 | 一种航空发动机燃油喷嘴热防护结构 |
| CN116379474B (zh) * | 2023-02-22 | 2024-04-16 | 中国航发四川燃气涡轮研究院 | 一种航空发动机燃油喷嘴热防护结构 |
Also Published As
| Publication number | Publication date |
|---|---|
| RS20210169A1 (sr) | 2022-08-31 |
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