Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/40—Heating elements having the shape of rods or tubes
  • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
  • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
• • 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
  • F24D3/00—Hot-water central heating systems
  • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
  • F24D3/087—Tap water heat exchangers specially adapted therefore
• • 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
  • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
  • F24H1/18—Water-storage heaters
  • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
  • F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
• • 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
  • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
  • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
  • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/78—Heating arrangements specially adapted for immersion heating
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
  • H05B2203/021—Heaters specially adapted for heating liquids

Definitions

• the present invention relates to an electric boiler.
• a variety of electric boilers are well known used to heat at least one operating fluid, usually water, flowing into a building’s heating system to warm the rooms thereof.
• these types of boilers are provided with a large tank containing several liters of operating fluid wherein heating means, such as one or more heating elements, are immersed for the purpose of heating the operating fluid.
• the heated fluid is conveyed along a distribution line that makes it flow through appropriate heat exchangers, such as e.g. radiators or the like, placed in the rooms to be heated, and through which the heat accumulated by the fluid is transferred to the room.
• appropriate heat exchangers such as e.g. radiators or the like
• the operating fluid returns to the inside of the source tank to accumulate new heat and flow back down the distribution line, substantially in a closed loop.
• these types of boilers can also be used to supply one or more users with hot water, e.g., to perform common household activities or the like.
• these boilers do have some drawbacks.
• the operating fluid progressively gives up heat to the rooms through the distribution line and returns to the boiler at a temperature substantially comparable to or lower than the starting temperature.
• the heating means take a long time to bring the operating fluid to a substantially constant temperature throughout the system.
• This phenomenon happens frequently, e.g., during winter periods and/or when activating the boiler after a long time of inactivity.
• This phenomenon is particularly present in systems that are also responsible for heating one or more rooms outside buildings, as well as one or more rooms inside.
• the main aim of the present invention is to devise an electric boiler that allows the operating fluid to be brought to a sufficiently high temperature substantially throughout the system in a shorter time than boilers of known types.
• a further object of the present invention is to devise an electric boiler that allows for substantially uniform heating of several rooms to be heated.
• An additional object of the present invention is to devise an electric boiler that allows heating systems to easily and quickly heat both internal and external rooms of buildings.
• Another object of the present invention is to devise an electric boiler that can overcome the aforementioned drawbacks of the prior art within the framework of a simple, rational, easy and effective to use as well as affordable solution.
• Figure 2 is an axonometric view of some components of the boiler according to the invention.
• Figure 3 is an exploded view of Figure 2;
• Figure 4 is a view of the system according to the invention.
• reference numeral 1 globally denotes an electric boiler.
• the electric boiler 1 comprises: at least one hermetically sealed container body 2 defining at least one containment volume 3 of at least one heat transfer fluid 4 to be heated; heating means 5, immersed in the heat transfer fluid 4 and electrically operable to heat the latter; conveying means 6 of at least one operating fluid 7 through the container body 2, comprising at least one conveying body 8 passing through the containment volume 3 immersed in the heat transfer fluid 4 to enable the latter to transmit heat to the operating fluid 7 circulating along the same conveying body.
• the operating fluid 7 is intended to heat one or more rooms 22, 23.
• the conveying means 6 are preferably connected along a distribution line 9 of the operating fluid 7 in one or more rooms 22, 23 to be heated, such as the rooms of a building, a flat or the like.
• the conveying body 8 defines at least one predefined path of the operating fluid 7 passing through the container body 2.
• the operating fluid 7 acquires heat from the heat transfer fluid 4 as it travels the predefined path.
• the conveying body 8 is made of a thermally conductive material, such as e.g. copper or similar materials, so as to facilitate heat conduction between the heat transfer fluid 4 and the operating fluid 7.
• the heat transfer fluid 4 is adapted to store the heat generated by the heating means 5.
• the heat transfer fluid 4 is confined within the container body 2 and therefore stores heat quickly.
• the heat transfer fluid 4 quickly stores heat energy that is transferred to the operating fluid 7.
• the heat transfer fluid 4 defines a heat stock constantly supplied by the heating means 5.
• This expedient significantly facilitates the heat exchange between the heating means 5 and the operating fluid 7, which is heated much faster in comparison with the boilers of known type.
• the heating means 5 are arranged in the proximity of the conveying body 8.
• the container body 2 is provided with at least one containment surface 10 which delimits the boundaries of the containment volume 3 and which is arranged in the proximity of the heating means 5 and of the conveying body 8 to limit the extent of the containment volume 3 itself.
• the containment surface 10 minimizes the distance between the heating means 5 and the conveying body 8.
• the containment volume 3 is substantially entirely occupied by the heating means 5 and by the conveying body 8, while the heat transfer fluid 4, given its characteristics, substantially fills the spaces inevitably left between the heating means 5 and the conveying body 8.
• the width of these spaces is the result of the conformation of the heating means 5, of the conveying body 8 and of the mutual arrangement of these, which is also influenced by the same conformations.
• the volume occupied by the heat transfer fluid 4 within the containment volume 3 is less than the sum of the volumes occupied, within the same containment volume, by the heating means 5 and by the conveying body 8.
• the volume occupied by the heat transfer fluid 4 within the containment volume 3 be less than the volume occupied, within the same containment volume, by the heating means 5.
• the volume occupied by the heat transfer fluid 4 within the containment volume 3 be less than the volume occupied, within the same containment volume, by the conveying body 8.
• the boiler 1 reduces the volume of the heat transfer fluid 4 contained within the containment volume 3 which, in this way, is heated rapidly.
• the container body 2 defines at least one section 11 of the containment volume 3 occupied, substantially to size, by one of either the heating means 5 or the conveying body 8.
• the container body 2 defines an additional section 11 of the containment volume 3 occupied substantially to size by the other of either the heating means 5 or the conveying body 8.
• the sections 11 face, adjacent to each other, to minimize the distance between the heating means 5 and the conveying body 8.
• such sections 11 define the entirety of the containment volume 3.
• the section 11 of the containment volume 3 occupied by the conveying body 8 is bounded by the containment surface 10 and by the heating means 5.
• the section 11 of the containment volume 3 occupied by the heating means 5 is bounded by the containment surface 10 and by the conveying body 8.
• the conveying body 8 is folded on itself.
• this expedient allows lengthening the predefined path followed by the operating fluid 7 inside the container body 2 and, therefore, increasing the residence time of the operating fluid 7 inside the conveying body 8.
• this expedient makes it possible to increase the heat exchange surface of the conveying body 8.
• this expedient allows increasing the heat transfer between the heat transfer fluid 4 and the operating fluid 7.
• the conveying body 8 is folded on itself several times, so as to further increase the heat exchange between the heat transfer fluid 4 and the operating fluid 7.
• the conveying body 8 is folded on itself several times in an orderly manner, so that it is arranged to size within the section 11 of containment volume 3 it occupies.
• the conveying body 8 comprises at least one heat exchange fin, not shown in the figures, which increases the contact surface of the same conveying body 8 with the heat transfer fluid 4. In this way, through the exchange fin, the conveying body 8 further increases the heat exchange between the heat transfer fluid 4 and the operating fluid 7.
• the heat exchange fin extends along substantially the entire conveying body 8.
• the heat exchange fin allows the conveying body 8 to occupy the corresponding section 11 to size.
• the conveying body 8 comprises a plurality of conveying stretches 12 substantially parallel to each other.
• each conveying stretch 12 is spaced apart from the others, so that the heat transfer fluid substantially envelops completely each conveying stretch 12.
• the conveying body 8 is folded on itself to define the conveying stretches 12.
• This expedient allows maximizing the length of the predefined path and the heat transfer surface of the conveying body 8.
• This expedient makes it possible to increase the length of the predefined path and the heat exchange surface of the conveying body 8.
• the conveying stretches 12 are side by side parallel to each other, adjacent to each other, to make a substantially compact structure.
• This expedient makes it possible to maximize the extent of the predefined path and of the heat exchange surface of the conveying body 8, while simultaneously minimizing the occupied containment volume 3.
• the conveying stretches 12 substantially define a coil.
• the conveying body 8 is preferably a tubular body.
• the boiler 1 comprises at least one access opening 13, made on the container body 2 and adapted to allow the extraction and introduction of the heat transfer fluid 4 inside the container body 2.
• the boiler 1 comprises airtight closure means 14 such as e.g. a plug, adapted to close/open the access opening 13.
• airtight closure means 14 such as e.g. a plug, adapted to close/open the access opening 13.
• the boiler 1 comprises a pair of access openings 13.
• the boiler 1 comprises coupling means, not shown in the figures, adapted to couple the heating means 5 to the container body 2 in a removable manner.
• This expedient enables quick and easy replacement of the heating means 5.
• the boiler 1 comprises at least one containment body 15 within which the container body 2 is housed.
• the containment body 15 is a substantially rigid body.
• the containment body 15 is made of a thermally insulating material.
• the containment body 15 is preferably made of wood or similar materials.
• the boiler 1 comprises at least one thermally insulating body 16 placed between the container body 2 and the containment body 15.
• the container body 2 and the containment body 15 define a gap 17 between them.
• the gap houses the thermally insulating body 16 and/or a fluid, such as e.g. air.
• the gap facilitates the thermal insulation of the containment body 15 with the external room and therefore maximizes heat transfer to the operating fluid 7.
• the gap 17 substantially surrounds the container body 2 completely.
• the thermally insulating body 16 is of the type of a compressible body.
• the thermally insulating body 16 is preferably made of rock wool or similar materials.
• the present invention relates to a heating system 18.
• the heating system 18 comprises: a distribution line 9 of at least one operating fluid 7 in one or more rooms 22, 23 to be heated; at least one boiler assembly 19 connected in a fluid- operated manner along the distribution line 9 and adapted to heat the operating fluid 7 circulating in the distribution line 9 to heat the room(s) 22, 23; at least one boiler 1, the conveying means 6 of which are connected in a fluid- operated manner along the distribution line 9 to convey the operating fluid 7 through the container body 2.
• the boiler assembly 19 is a boiler of known type.
• the boiler 1 helps the boiler assembly 19 to bring the operating fluid 7 to temperature.
• the operating fluid 7 is heated by the boiler 1 before being introduced into the boiler assembly 19.
• the operating fluid 7 that reaches the boiler assembly 19 is at a significantly higher temperature than the initial temperature, and therefore the boiler assembly 19 brings the operating fluid 7 to temperature more easily and quickly.
• the boiler 1 performs preheating of the operating fluid 7 that enters the boiler assembly 19.
• the distribution line 9 comprises at least an outlet stretch 20 of the operating fluid 7 from the boiler assembly 19 and one inlet stretch 21 of the operating fluid 7 from the boiler assembly 19.
• the boiler 1 is arranged in the proximity of the inlet stretch 21.
• This expedient allows the operating fluid 7 to be heated just before it enters the boiler assembly 19, so as to maximize heat transfer between the heating means 5 and the operating fluid 7.
• the boiler 1 allows new heat to be imparted to the operating fluid 7 which, therefore, will be transferred to the room(s) 22, 23 that follow along the distribution line.
• system 18 cannot also be ruled out wherein the system comprises a plurality of boilers 1 arranged along the distribution line 9 and wherein, preferably, each boiler 1 is arranged at the end of a respective stretch of predefined length.
• system 18 cannot be ruled out, wherein it comprises at least one boiler 1 arranged along the distribution line 9, upstream of an apparatus that, for its proper operation, must employ the operating fluid 7 at a temperature above a minimum threshold temperature.
• Some examples of such apparatuses are antifreeze systems for outdoor surfaces, such as roofs, ramps, stairs and the like.
• the distribution line 9 serves both internal rooms 22 and external rooms 23 in the building where there are such apparatuses, and where at least one boiler 1 is arranged along the distribution line 9, upstream of and in close proximity to the apparatus.
• the joint operation of the boiler assembly and the boiler covered by the present invention allows for substantially uniform heating of the different rooms to be heated.
• the joint operation of the boiler assembly and the boiler covered by the present invention allows for both internal and external rooms of buildings to be heated easily and quickly.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Water Supply & Treatment (AREA)
• Central Heating Systems (AREA)
• Fire-Extinguishing Compositions (AREA)
• Insulated Conductors (AREA)
• Fluid-Pressure Circuits (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Citations (3)

• 2021
  • 2021-11-10 IT IT102021000028520A patent/IT202100028520A1/it unknown
• 2022
  • 2022-11-10 WO PCT/IB2022/060828 patent/WO2023084439A1/en active Application Filing

Patent Citations (3)

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