PL441209A1 - Heating system, especially central heating installations - Google Patents

Abstract

The subject of the application is a heating system, especially a central heating installation. The solution is characterized by the fact that the heating boiler (1) is a liquid tank (2) with a heating system built inside, which heating system consists of a system of at least two pipes, preferably located coaxially to each other and preferably mounted coaxially relative to the axis of the tank (2). and from at least one induction coil (3), which is connected to an external power source through a generator (16), where the induction coil (3) is mounted in a dry chamber (4) formed by the space between the inner metal tube (5), made of preferably made of steel, supplying water to the interior of the tank (2) through the heating system, the inner pipe (5) passing through the upper cover (6) of the tank (2) and the metal middle pipe (7), preferably made of steel, which is mounted to the upper base (8) of the tank (2) and permanently connected to the inner pipe (5), while the induction coil (3) is mounted between the inner pipe (5) and the middle pipe (7) in such a way that it wraps the inner pipe (5 ), preferably along its entire length, and the outer pipe (9), preferably made of steel, is mounted in the tank (2) of the middle pipe (7) and is permanently connected to the upper base (8) of the tank (2) and the lower base ( 10) tank (2), where the space between the outer pipe (9) and the middle pipe (7) is a system for heating the water supplied via the inner pipe (5), and the directing nozzles (11) are mounted in the upper part of the outer pipe (9). , introducing heated water into the tank (2) and loading it in layers, where the tank (2) is connected to the central heating installation through an output stub (12) mounted in the upper part of the tank (2), supplying power to the central heating installation stored in the tank (2). water heated in the system, a stub pipe (13) installed in the lower part of the tank (2), supplying water returning from the central heating system to the tank (2), while the inlet of the internal pipe (5) supplying water to the heating system is connected with a pipe to the stub pipe (14) mounted in the lower part of the tank (2) by the pump (15).

Description

tank part (2) outlet connector (12) supplying the central heating system water stored in the tank (2) heated in the system, mounted in the lower part of the tank (2) connector (13) supplying the tank (2) with water returning from the central heating system, while the inlet of the inner pipe (5) supplying water to the heating system is connected by a pipe to the connector (14) mounted in the lower part of the tank (2) through the pump (15).

PL 441209 A1 2/18Heating system, especially central heating installations The subject of the invention is a heating system, especially central heating installations. The technical field includes central heating furnaces, heating devices, and heat exchangers used therein.

The state of the art includes many known solutions for central heating installations, including central heating furnaces and boilers, e.g., gas, oil, solid fuel, wood, biomass, etc.

A central heating furnace is known, for example, from the description of patent Pat. 224,145; it is characterized by having a second water jacket in which an exhaust gas outlet channel is formed, the water jacket being equipped with an inlet and outlet connector for the heating medium. The movable partition in the outlet channel has a smaller surface area than the front of this channel. The position of the movable partition is set and maintained in a desired position by an actuator, preferably a stepper motor, coupled via a controller to an exhaust gas temperature sensor in the flue.

The Pallet Description Pat.23 7940 describes a central heating water boiler intended for use in central heating systems in buildings, single-family homes, workshops, industrial plants, and others. The boiler has a heating chamber in the shape of a pipe with a vertical axis. At the top of the heating chamber is a feeder for feeding calcium oxide (C~O) into the heating chamber. The interior of the heating chamber contains shelves, which in this embodiment represent the screw conveyor belt.

The screw ribbon is openwork to facilitate the removal of calcium hydroxide Ca(OH)2, formed by the chemical reaction of calcium oxide CaO, from the steam trap located above the silicon trays of the screw ribbon. At the bottom, the heating chamber below the screw ribbon has a port for the removal of calcium hydroxide produced in the heating chamber.

Ca(OH)2. The heating chamber is surrounded by a water jacket to absorb heat from the heating medium; this heat is generated during the exothermic reaction of calcium oxide CaO with water. The water vapor is removed through a nozzle located at the top of the heating chamber. The calcium oxide CaO feeder is a screw conveyor with a dosing screw located in the boiler. The feeder outlet is located at the top of the heating chamber and is surrounded by a sprinkler.

A central heating boiler is also known, which was disclosed in patent description Pat. 224288. The boiler according to the invention comprises a body having water chambers connected in the walls by flow. In the front wall of the boiler there is a fuel charging opening, an opening with a lower door; and below the grate there is an opening with an ash pan door. Inside the upper part of the boiler interior is a heat exchanger. In the vertical wall of the boiler is an air inlet to the combustion chamber, and inside the combustion chamber there is: at least one partition; The vertical wall of the boiler is connected to a vertical partition, which is located in a plane parallel to the boiler wall. Between the vertical partition and the boiler wall is a post-combustion chamber. The flue gas inlet to the vertical post-combustion chamber is located at the lower edge of the vertical partition, in the area adjacent to the boiler grate.

From the description of utility model Ru.0701 18, a device for heating and cooling is known, primarily for hot-water central heating installations, which is formed by means of a single heat exchanger, with a shield, wherein the heat exchanger consists of at least one row of tubes, situated at an angle u to the horizontal of a maximum of 63°, each row of tubes consisting of at least two tubes, with an aerodynamic profile formed at least substantially by a rectangle or substantially by an oval with the length of the longer axis in the cross-section at least 2 times greater than the length of the longer axis in the cross-section (its shorter: axis b, where the distance h between at least some of the tubes is a maximum of 13 mm, and whereby at least on one side the heat exchanger ends with a collecting space to which at least some of the tubes are led and which is equipped with supply and/or discharge pipes.

PL 441209 A1 4/18 From the description 2: patent vote P.430685, an integrated system is known for heating in use and a heating medium for central heating. The subject of the application is a system that includes at least two independent sources of heating medium, such as a boiler and/or a set of solar panels or a heat pump, etc., connected in parallel to the integrated system via a plate heat exchanger, and the heating medium collecting heat from the parallel connected circuits, both for central heating and for heating - domestic water with an interface. via its own plate heat exchanger; wherein the aforementioned circuits, including the return sections, are interconnected in parallel by plate heat exchangers, ~of the cluster, v block of the integrated system and are mutually variable, especially depending on the different levels of temperatures achieved. At least two stratified layers of heating medium above each other in an external heating medium tank, connected in parallel via a differential connection of a group of three-way valves with inputs/outputs for the circuits, preferably via the input/output in the external tank for the central heating circuit and through the input/output in the external tank for heating domestic water, initially to the domestic water heating circuit from the upper layer of the heating medium via two-way valves carrying differentials for potential switching to the domestic water heating circuit with a temperature not exceeding 55°C or to the central heating circuit with a temperature even above 55°C.

There are also known faults that determine the proper functioning of the central heating system.

Patent description Pat. 231115 describes a heating and cooling module as a single component, made of two sheets of equal thickness, particularly for use in industrial heat exchange devices and central heating radiators, as well as a method for constructing such a heating and cooling module. The heating and cooling module, "Properties of." industrial heat distribution devices and central heating radiators, is characterized by the fact that it consists of two sheets of identical thicknesses gl and g2, where the sheet of thickness (gl) constitutes the casing (A), and the sheet of thickness (g2) constitutes the casing (8). Furthermore, the casing (B) is inseparably connected to the casing (A) with tight welds on the perimeter and surface, and the casing (A) and casing (8) have shaped bulges on both sides between the joints on the outside, while on the inside there is a slotted flow channel between the casing (A) PL 441209 A1 /18 and the casing (B) and the joints. heating and cooling medium.

From the description of patent application P.385279 a central heating distributor is known, equipped with a body, preferably containing threaded supply holes and outlet holes, made of a closed oblong. LJ pages 9dcirika rui)' of a quadrangular cross-section. The invention is characterized in that inside the body closed with walls, a partition is placed longitudinally, separating the supply area from the return area, while on the wall, in the supply area, there is a supply opening, and on the opposite wall, there is an opening, while on the upper wall of the body there are supply outlet openings, while on the second wall, in the return area, there is an outlet opening, and on the opposite wall, there is an opening, while on the lower wall of the body, there are connected openings for inserting the return.

The utility model description describes a set of internal connections for central heating installations, used to connect supply and return pipes with a heating medium, where the supply and return pipes run in separate loops, in the same plane, formed by two tees, one of which has a cylindrical bypass. The set of connections is characterized in that a sleeve with seals is mounted in the central opening of the cylindrical bypass of the fixed bypass tee, wherein the sleeve is secured and secured against slipping out by a spring ring mounted in the channel of the fixed bypass tee. The bodies of the fixed bypass tee and the fixed tee have at least two flattened surfaces in parallel; From another description of the utility model application, 9 W.12672_7, a heat exchanger for a central heating boiler is known, constituting a set of adjacent cast iron members having circumferential channels inside, forming a jacket for the heating medium, and inlet and outlet openings for the heating medium, as well as inspection openings, and which members, connected from the inside, form a combustion chamber, comprise a front member, yhii, and at least one middle member, wherein at least one middle member has at least one recess, which! in combination with another member, it creates an opening in the lower part and side wall of the exchanger, with each side of the combustion chamber being at least partially surrounded by a heating medium jacket. Furthermore, the members in the upper part have at least two rows of ribs with circumferential channels for the heating medium.

PL 441209 A1 6/18 The purpose of the invention is to develop an energy-efficient system for heating water used in central heating installations.

A certain problem and inconvenience associated with the use of state-of-the-art solutions is the low energy efficiency of water heating systems, which is accompanied by higher operating costs on the one hand, and increased fuel combustion losses and negative environmental impacts on the other.

The design according to the invention eliminates the disadvantages and inconveniences resulting from the limited possibilities and application of the solution known in the art. The essence of the invention, which is an heating system, especially for central heating installations, consists in the fact that the heating boiler is a liquid tank with: a semi-heating system inside, which heating system consists of a central heating system. at least two pipes, preferably arranged coaxially with respect to each other and preferably mounted coaxially with respect to the axis of the tank, and at least one induction coil, which is connected to an external current source via a generator, wherein the induction coil is arranged in a dry form which creates a space between a metal inner pipe, preferably made of steel, supplying water to the interior of the tank through a heating system, which inner pipe passes through the upper cover of the tank and a metal pipe in the middle, preferably made of steel, which is attached to the upper base of the tank and permanently connected to the internal pipe, while the induction coil is mounted between the inner pipe and the central pipe in such a way that it wraps the inner pipe, preferably along its entire length, while the outer pipe, preferably made of steel, is mounted in the tank around the central frame and is also connected to the upper base of the tank and the lower base of the tank, where the space between the outer pipe and the central pipe constitutes the system for heating the supplied water! by means of an internal pipe), and in the upper outer part of the pipe there are guide nozzles, which introduce heated water into the tank and load it in layers. The tank is connected to the central heating system by means of a connector fitted in the upper part of the tank. The outlet pipe, which supplies the central heating system. The water stored in the tank and heated in the system is mounted in the lower part of the tank. The connector pipe supplies the tank with water returning from the central heating system, while the inlet of the internal pipe supplying water to the heating system is connected by a pipe to the connector fitted in the lower part of the tank. after· with po1i1pe.

It is also advantageous if the inner pipe and/or the middle pipe and/or the outer pipe are made of copper, and it is also advantageous if the pipes are made of bronze.

Furthermore, it is advantageous when the distance of the induction coil from the inner pipe supplying water to the tank is in the range of 0.8 to 1.2 times the distance by which the induction coil is distanced from the central pipe.

Additionally, it is advantageous when the distance of the outer pipe from the middle pipe is approximately equal to the distance, and the middle pipe is spaced from the inner pipe.

It is particularly advantageous when an intermediate layer is placed between the induction coil and the inner tube, preferably in the form of a tube, on which intermediate layer the induction coil is wound, and it is also advantageous when the tube constituting the intermediate layer is made of paper, and it is also advantageous when the tube constituting the intermediate layer is made of plastic, most preferably polypropylene or polypropylene.

It is also beneficial if partitions are installed between the outer pipe and the side walls of the tank to limit the mixing of water in the tank.

Additionally, it is beneficial if the outer walls of the tank have thermal insulation.

Furthermore, it is advantageous if the generator cooling system is included in the fluid circulation between the pump and the inlet of the inner pipe.

It is also advantageous when the induction coil is connected to an external power source generated using renewable energy sources, preferably photovoltaic panels.

A convenient phase is when the tank is connected to an additional liquid reservoir.

PL 441209 A1 8/18 By using the solution according to the invention, the following technical and operational benefits were achieved: - increased energy efficiency of the water heating process in central heating installations, with limited availability of limited fossil fuels, - the possibility of integrating the heating system with installations generating energy from renewable sources, in particular with photovoltaic panels, - reduced emissions and reduced energy losses, and thus reduced the level of negative impacts on the natural environment, - reduced costs of central heating in buildings.

The subject of the invention in an exemplary but non-limiting embodiment is presented in the diagram in the drawing, where Fig. 1 schematically shows the structure of the heating boiler connected to the pump and generator, while Fig. 2 shows the same view of the device in a color version, in which the water heating zones are illustrated, where the water entering the system requiring heating is symbolically marked in blue, while the water heated in the system is symbolically marked in dark blue, and the direction of fluid flow is marked with arrows.

Example »~rkmumill In the example embodiment, the heating system according to the invention is used in a central heating installation and consists of a heating boiler 1, which houses a liquid tank 2 with a capacity of 130 liters, with a built-in heating system.

The heating system consists of a system of three metal tubes with a good heat transfer coefficient. In the exemplary embodiment, these tubes are made of steel, similar to tank 2. In other embodiments, the tubes may be made of copper or bronze. The tubes are mounted coaxially to each other and are mounted centrally in the axis of tank 2. An induction coil J is mounted between the inner tube S, with a diameter of 60 mm, and the middle tube 7, with a diameter of 110 mm. PL 441209 A1 9/18, which is powered by a generator 16 connected to an external power source.

The induction coil 3 is mounted in a dry chamber 4, which creates a space between the inner metal pipe 5, which supplies water to the interior of the tank 2 through the heating system, and the inner pipe 5, which passes through the upper cover 6 of the tank 2, and the middle metal pipe 7, which is attached to the upper base 8 of the tank 2 and permanently connected to the inner pipe 5. The inlet of the inner pipe 5, which supplies water to the heating system, is connected by a pipe to the connector 14, mounted in the lower part of the tank 2, through the pump 15. The generator cooling system 16 is included in the liquid circulation between the pump 5 and the inlet of the inner pipe 3. powering the coil: inductive 3.

The induction coil 3 is mounted between the inner pipe 5 and the middle pipe 7 in such a way that it wraps the inner pipe 5 along its entire length, while the outer pipe 9, whose diameter is 160 mm, is mounted in the tank 2 around the middle pipe 7 and is permanently connected to the upper base 8 of the tank 2 and the lower base 10. In the exemplary embodiment, the distance of the induction coil 2 from the inner pipe 5 supplying water to the tank 2 is equal to the distance by which the induction coil 3 is distanced from the middle pipe 7, while the distance of the outer pipe 9 from the middle pipe 7 is equal to the distance The middle pipe 7 is spaced from the inner pipe 5. The space between the outer pipe 9 and the middle pipe 7 constitutes a system for heating water supplied to the system via the inner pipe 5.

In the upper part of the outer pipe 9, guide nozzles 11 are mounted, which introduce heated water into the system into tank 2 and load it in layers.

Tank 2 is connected to the central heating system via an outlet connector 12 located in the upper part of tank 2, which supplies the central heating system with water stored in tank 2 heated in the system. A connector 13 located in the lower part of tank 2 constitutes a return connection allowing water returning from the central heating system to be fed to tank 2. The walls of tank 2, its side walls, upper base, and lower base, along with the pipes attached to them, constituting the heating system, are connected by a welded structure.

PL 441209 A1 /18 The outer walls of tank 2 are lined with an additional layer of thermal insulation l8.

In another embodiment, between the induction coil 3 and the inner tube, there is an intermediate layer in the form of a non-metallic tube, on which the induction coil is wound, constituting a replaceable module, which further increases the energy efficiency of the system. Furthermore, this solution facilitates service work related to maintaining the system's operational efficiency and its possible repair. The tube constituting the intermediate layer, depending on the system's embodiment and the assumed technical parameters, is made of paper or plastic, preferably polypropylene or polyamide.

In another variant of the design, horizontal partitions are mounted between the external pipe 9 and the side walls of the tank 2 to limit the mixing of water in the tank.

Regardless of the variants indicated above, the induction coil is connected to a generator that can be powered from the grid or other sources, using renewable energy sources, such as photovoltaic panels.

This solution enables maximum use of the energy produced in the photovoltaic installation, without the need to feed the excess energy into the grid. The system uses a valve control system that allows for optimal use of electrical energy depending on external atmospheric conditions and the current heat demand. Depending on the extent of the installation, in another variant, tank 2 is connected to an additional liquid tank. The water in the heating system according to the invention is heated by means of an induction coil 3, which, powered by a generator 16, generates an electromagnetic field, as a result of which the pipes constituting the heating system are heated. The water in tank 2 is pumped from the lower part of the van by means of a pump 15 and pre-heated. heated as a result of heat removal from the generator 16. Then, through the inner wind pipe S, it is introduced into the system, where it is preheated by receiving heat from the inner pipe 5 and then heated by flowing around the induction coil 3 in the space created between PL 441209 A1 11/18 the central pipe 7 and the outer pipe 9. Then, the heated water is loaded in layers into tank 2 through directional nozzles 11. Thanks to the layered arrangement of heated water in the upper part of tank 2, the phenomenon of mixing of water heated in the system with water at a lower temperature, which returns to tank 2 from the central heating system, is limited.

PL 441209 A1 12/18 Patent claims 1. Heating system, in particular a central heating installation, comprising a liquid heating system with a heat exchanger and a control system, connected to the central heating installation by means of installation elements, conduits and a valve system, characterized in that the heating boiler (1) is a liquid tank (2) with a variable temperature control inside and outside. heating system, which heating system consists of a system 1.1 of at least two pipes, preferably arranged coaxially with respect to each other and preferably mounted coaxially with respect to the axis of the tank (2) and of at least one induction coil (3), which is connected to an external power source via a generator (16), wherein the induction coil (3) is mounted in a dry chamber (4) which forms a space between a metal inner pipe (5), v. 1 preferably made of steel, supplying water to the interior of the tank (2) through the heating system, which metal pipe (5) passes through the upper cover (6) of the tank (2) and a metal central pipe (7), made preferably made of steel, which is attached to the upper base (8) of the tank (2) and permanently connected to the inside! pipe (5), while the induction coil (3) is mounted between the inner pipe (5) and the middle pipe (7) in such a way that it wraps the inner pipe (5), preferably along its entire length, while the outer pipe (9), preferably made of steel, is mounted in the tank (2) around the middle pipe (7) and is permanently connected to the upper base (8) of the tank (2) and the lower base (10) of the tank (2), where the space between the outer pipe (9) and the middle pipe (7) constitutes a system for heating water supplied by means of the inner pipe (5), and in the upper part of the outer pipe (9) there are mounted directing nozzles (11), introducing heated water to the tank (2) and loading it in layers, where the tank (2) is connected PL 441209 A1 13/18 to the central heating system via an outlet connector (12) mounted in the upper part of the tank (2) that supplies the central heating system. The water stored in the tank (2) is heated in the system, a connector (I J) mounted in the lower part of the tank (2) that supplies the tank (2) with water returning from the central heating system, while the inlet of the inner pipe (5) supplying water to the heating system is connected by a pipe to the outlet (14) mounted in the lower part of the tank (2) via a pump (15). 2. Arrangement according to claim I, characterized in that the inner pipe (5) and/or the center pipe (7) and/or the outer pipe (9) are made of copper. 3. A system according to claim 1, characterized in that the inner pipe (5) and/or the center pipe (7) and/or the outer pipe (9) are made of bronze. 4. A system according to claim 1 or claim 2 or claim 3, characterized in that the distance of the induction coil (2) from the inner pipe (S) supplying water to the tank (2) is in the range of 0.8 to 1.2 times the distance of the induction coil (3) from the pipe (7).- A system according to claim 1 or claim 4, characterized in that the distance of the outer tube (9) from the middle tube (7) is approximately equal to the distance separating the middle tube (7) from the inner tube (5). 6. A system according to claim 1 or claim 5, characterized in that between the induction coil (3) and the inner tube (5) there is an intermediate layer, preferably in the form of a tube, on which intermediate layer the induction coil (3) is wound. 7. A system according to claim 1 or claim 5, characterized in that the The intermediate layer is made of plastic, preferably polypropylene or polyamide. 8. The system according to claim 1 or claim 4, characterized in that the tube constituting the intermediate layer is made of paper. 9. The system according to any one of claims 1 to 8, characterized in that partitions are mounted between the outer tube (9) and the side walls of the tank (2) to limit the mixing of water in the tank. 10. The system according to claim 1 or claim 9, characterized in that the outer walls of the tank (2) have thermal insulation (1 ~). d I. The system according to claim 1, characterized in that The liquid circulation between the pump (15) and the inlet of the inner pipe (3) is switched on by the cooling system of the generator (16).

PL 441209 A1 14/18I 2'. System according to claim 1, characterized in that the induction coil (3) is connected to an external source of current generated using renewable energy sources, preferably photovoltaic panels. 13. System according to claim 1, characterized in that the tank (2) is connected to an additional liquid reservoir.

PL 441209 A1 /18l l l 17 Fig~ I PL 441209 A1 16/1815 Fig. 2 PL 441209 A1 17/18al. Niepodległości 188/192 00-950 Warsaw, PO Box 203 PATENT OFFICE OF THE REPUBLIC OF POLAND tel.: (+48) 22 579 05 55 and fax: (+48) 22 579 00 01 e-mail: kontakt@uprp.gov.pl and www.uprp.gov.pl TECHNOLOGY REPORT FOR APPLICATION NO. P.441209 Application classification: F24H 1/20, F24H 9/1818, H05B 6/10 Subclasses searched: F24H H05B Computer databases searched: EPODOC WPI UPRP databases Document category A A EA Documents - with identification provided PL224946 Bl (GLOGOWSKI PRZEMYSLAW [PL]; GLOGOWSKI JERZY [PL]) 28-12-2020 KR102143816 Bl (GO GENERAL CONSTRUCTION [KR]) 12-08-2020 PL437966 Al (LUBERA STANISLAW [PL]) 28-11-2022 D List of documents continued on the next page A - a document defining the general state of the art that is not considered to be of particular importance, E - a document constituting an earlier application or patent, but published on or after the filing date, Reference to claim 1-13 1-13 1-13 L - document that may cast doubt on the claimed priority(s), or cited for the purpose of establishing the publication date of another cited document or for another special reason, O - document relating to oral disclosure by use, exhibition, or other disclosure, P - document published before the filing date but after the claimed priority date, T - later document, published after the filing date or on the priority date and not in conflict with the application, but cited for the purpose of understanding the principles or theories underlying the invention, X - document of particular importance; the claimed invention cannot be considered new or cannot be considered as involving an inventive step when this document is considered on its own, Y - document of particular importance; the claimed invention cannot be considered to involve an inventive step if this document is combined with one or more such documents, and such combination is obvious to a person skilled in the art, & - a document belonging to the same patent family.

Report prepared by: Pawel Bialy Head of the Department Date: February 14, 2023 Comments on the notification The report was prepared based on the reservation of May 17, 2022.

Signature: /signed with a qualified electronic signature/ Letter issued in electronic form PL 441209 A1 18/18

Claims (9)

Patent claims 1. Heating system, especially a central heating installation, comprising a liquid heating system with a heat exchanger and a control system, connected to the central heating installation by means of installation elements, pipes and a valve system, characterized in that the heating boiler (1) is a liquid tank (2) with a variable temperature inside and outside. heating system, which heating system consists of a system 1.1 of at least two pipes, preferably arranged coaxially with respect to each other and preferably mounted coaxially with respect to the axis of the tank (2) and at least one induction coil (3), which is connected to an external power source via a generator (16), wherein the induction coil (3) is mounted in a dry chamber (4), which forms a space between a metal inner pipe (5), v. 1, preferably made of steel, supplying water to the interior of the tank (2) through the heating system, which metal pipe (5) passes through the upper cover (6) of the tank (2) and a metal central pipe (7), preferably made of steel, which is mounted to the upper base (8) of the tank (2) and permanently connected to the interior! pipe (5), while the induction coil (3) is mounted between the inner pipe (5) and the middle pipe (7) in such a way that it wraps the inner pipe (5), preferably along its entire length, while the outer pipe (9), preferably made of steel, is mounted in the tank (2) around the middle pipe (7) and is permanently connected to the upper base (8) of the tank (2) and the lower base (10) of the tank (2), where the space between the outer pipe (9) and the middle pipe (7) constitutes a system for heating water supplied by means of the inner pipe (5), and in the upper part of the outer pipe (9) there are mounted directing nozzles (11), introducing heated water into the tank (2) and charging it in layers, where the tank (2) is connected to the central heating installation via an outlet pipe (12) mounted in the upper part of the tank (2) which supplies the central heating installation with water stored in the tank (2) heated in the system, a pipe (1 J) mounted in the lower part of the tank (2) which supplies the tank (2) with water returning from the central heating installation, while the inlet of the internal pipe (5) supplying water to the heating system is connected by a pipe with a nozzle (14) mounted in the lower part of the tank (2) via a pump (15). 2. A system according to claim 1, characterized in that the inner pipe (5) and/or the means pipe (7) and/or the outer pipe (9) are made of copper. 3. A system according to claim 1, characterized in that the inner tube (5) and/or the middle carriage (7) and/or the outer tube (9) are made of bronze. 4. A system according to claim 1 or claim 2 or claim 3, characterized in that the distance of the induction coil (2) from the inner pipe (S) supplying water to the tank (2) is in the range from 0.8 to 1.2 times the distance of the induction coil (3) from the central pipe (7). 5. A system according to claim 1 or claim 4, characterized in that the distance of the outer pipe (9) from the middle pipe (7) is approximately equal to the distance separating the middle pipe (7) from the inner pipe (5). 6. A system according to claim 1 or claim 5, characterized in that between the induction coil (3) and the inner tube (5) there is an intermediate layer, preferably in the form of a tube, on which intermediate layer the induction coil (3) is wound. 7. A system according to claim 1 or claim 5, characterized in that the layer constituting the intermediate layer is made of plastic, preferably polypropylene or polyamide. 8. A system according to claim 1 or claim 4, characterized in that the tube constituting the intermediate layer is made of paper. 9. A system according to any one of claims 1 to 8, characterized in that partitions are mounted between the outer pipe (9) and the side walls of the tank (2) to limit the mixing of water in the tank. 10. A system according to claim 1 or claim 9, characterized in that the outer walls of the tank (2) are thermally insulated (1 ~). 11. A system according to claim 1, characterized in that a generator cooling system (16) is included in the liquid circulation between the pump (15) and the inlet of the inner pipe (3). 4/18I 2'. A system according to claim I, characterized in that the induction coil (3) is connected to an external source of current generated using renewable energy sources, preferably photovoltaic panels. 13. A system according to claim I, characterized in that the tank (2) is connected to an additional liquid reservoir. 5/18l l l 15 17 Fig~ I6/1815 Fig. 27/18al. Niepodległości 188/192 00-950 Warsaw, PO Box 203 PATENT OFFICE OF THE REPUBLIC OF POLAND tel.: (+48) 22 579 05 55 I fax: (+48) 22 579 00 01 e-mail: kontakt@uprp.gov.pl I www.uprp.gov.pl REPORT ON THE STATE OF TECHNOLOGY FOR APPLICATION NO. P.441209 Application classification: F24H 1/20, F24H 9/1818, H05B 6/10 Subclasses in which the search was conducted: F24H H05B Computer databases in which the search was conducted: EPODOC WPI UPRP databases Document category A A EA Documents - with identification provided PL224946 Bl (GLOGOWSKI PRZEMYSLAW [PL]; GLOGOWSKI JERZY [PL]) 28-12-2020 KR102143816 Bl (GO GENERAL CONSTRUCTION [KR]) 12-08-2020 PL437966 Al (LUBERA STANISLAW [PL]) 28-11-2022 D Continuation of the list of documents on the next page A - a document defining the general state of the art which is not considered to be of particular importance, E - a document constituting an earlier application or patent but published on or after the filing date, Reference to claim 1-13 1-13 1-13 L - document which may cast doubt on the claimed priority(s), or cited for the purpose of establishing the date of publication of another cited document or for some other special reason, O - document relating to an oral disclosure by use, exhibition or other disclosure, P - document published before the filing date but after the claimed priority date, T - later document, published after the filing date or on the priority date and not in conflict with the application but cited for the purpose of understanding the principles or theories underlying the invention, X - document of special importance; the claimed invention cannot be considered as new or cannot be considered as involving an inventive step when this document is considered on its own, Y - document of special importance; The claimed invention cannot be considered to involve an inventive step if this document is combined with one or more such documents, and such a combination is obvious to a person skilled in the art, and - a document belonging to the same patent family. Report prepared by: Pawel Bialy, Head of Department Date: February 14, 2023 Comments on the application The report was prepared based on the claim of May 17, 2022. Signature: /signed with a qualified electronic signature/ Letter issued in the form of an electronic document 8/18