A door with a gas burner on an inner surface and a system for carrying a combustible gas to the burner on the outer surface thereof. The door comprises a pair of metal sheets rigidly connected to one another at the edges thereof, each sheet having input and output openings for the gas mixture that are mutually separated in order to leave an inner space receiving a deflector plate serving as a thermal shield to be swept over on either side by the flow of the gas mixture supplying the burner. This arrangement reduces heat loss through the door; thus, keeping the outer surface cold, avoiding the risk of burns, and preheating the gas mixture. The invention can be used in heating appliances.
F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
F24H 1/43 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
2.
Hot fluid production device including a condensing heat exchanger
The invention relates to a device that includes means for conveying or producing hot gases and a condensing heat exchanger including: an bundle of helical tubes serving as primary exchanger, mounted within a gas-impermeable housing and equipped with a gas discharge trunk, means for circulating a primary fluid in the primary exchanger, two deflector plates and a deflecting ring arranged so as to circulate the hot gasses through the coils of the primary exchanger. Said device is characterized in that it includes a second tube bundle serving as a secondary exchanger, means for circulating therein a secondary fluid separate from the primary fluid and in that the second deflector plate is inserted between the primary exchanger and the secondary exchanger. The invention can be used in the production of heating water and of hot water for sanitation.
F24D 19/00 - DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMSDOMESTIC HOT-WATER SUPPLY SYSTEMSELEMENTS OR COMPONENTS THEREFOR Details
F24H 8/00 - Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
F24H 1/43 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
F24H 1/52 - Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
The invention relates to a heating apparatus (1) including a condensation heat exchanger (2), a gas burner (3), a sleeve (40) for conveying an air/gas mixture to the burner (3), a means (42) for circulating said mixture in the apparatus, and a pipe (430) for feeding said gas into the intake sleeve (40). The heat exchanger (2) includes a tube (21) mounted inside an enclosure (200) defined by a housing (20), wherein a fluid to be heated flows through the tube (21) and the tube is exposed to hot gases generated by said burner (3), said housing (20) including a sleeve (205) for discharging the burnt gases. The invention is characterized in that at least one Venturi tube (70) is provided in said supply sleeve (40) downstream from the gas-feeding pipe (430), and the partial-vacuum chamber (76) of the Venturi tube (70) is in fluid communication with the collar (71) of the Venturi tube, said collar having a hole (710) extending therethrough, and in that at least one tubular junction part (8) connects the inside of the enclosure (200) with the partial-vacuum chamber (76) in order to collect a portion of the burnt gases and mix the latter with the air/gas mixture fed into the burner.
F24H 1/43 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
F24H 8/00 - Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
F24H 9/20 - Arrangement or mounting of control or safety devices
4.
Door with a built-in burner for a heating appliance
A door with a gas burner on an inner surface and a system for carrying a combustible gas to the burner on the outer surface thereof. The door comprises a pair of metal sheets rigidly connected to one another at the edges thereof, each sheet having input and output openings for the gas mixture that are mutually separated in order to leave an inner space receiving a deflector plate serving as a thermal shield to be swept over on either side by the flow of the gas mixture supplying the burner. This arrangement reduces heat loss through the door; thus, keeping the outer surface cold, avoiding the risk of burns, and preheating the gas mixture. The invention can be used in heating appliances.
F24H 1/43 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
F24H 9/18 - Arrangement or mounting of grates or heating means
5.
HOT FLUID PRODUCTION DEVICE INCLUDING A CONDENSING HEAT EXCHANGER
The invention relates to a device that includes means for conveying or producing (4) hot gases and a condensing heat exchanger (1) including: an bundle of helical tubes (2a) serving as primary exchanger, mounted within a gas-impermeable housing (10) and equipped with a gas discharge trunk (122), means (9) for circulating a primary fluid in the primary exchanger, two deflector plates (61, 62) and a deflecting ring (63) arranged so as to circulate the hot gases through the coils of the primary exchanger. Said device is characterized in that it includes a second tube bundle (2b) serving as a secondary exchanger, means for circulating therein a secondary fluid separate from the primary fluid and in that the second deflector plate is inserted between the primary exchanger (2a) and the secondary exchanger (2b). The invention can be used in the production of heating water and of hot water for sanitation.
F24H 1/43 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
F24H 1/52 - Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
F24H 8/00 - Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
6.
HOT FLUID PRODUCTION DEVICE INCLUDING A CONDENSING HEAT EXCHANGER
The invention relates to a device that includes means for conveying or producing (4) hot gases and a condensing heat exchanger (1) including: an bundle of helical tubes (2a) serving as primary exchanger, mounted within a gas-impermeable housing (10) and equipped with a gas discharge trunk (122), means (9) for circulating a primary fluid in the primary exchanger, two deflector plates (61, 62) and a deflecting ring (63) arranged so as to circulate the hot gases through the coils of the primary exchanger. Said device is characterized in that it includes a second tube bundle (2b) serving as a secondary exchanger, means for circulating therein a secondary fluid separate from the primary fluid and in that the second deflector plate is inserted between the primary exchanger (2a) and the secondary exchanger (2b). The invention can be used in the production of heating water and of hot water for sanitation.
F24H 1/43 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
F24H 1/52 - Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
The equipment of the invention includes a boiler, a hot water storage tank, a duct for supplying domestic cold water, and a duct for tapping domestic hot water, wherein said equipment is characterized in that the duct for supplying cold water comprises a T-shaped connector connected by a duct provided with a storage vessel to a re-circulation duct connecting the tank to the inlet duct, provided with a pump, of the boiler, and in that the outlet duct of the boiler is provided with a three-way valve connected by a by pass duct to said T-shaped connector, wherein said valve can selectively assume a position in which it ensures communication between the boiler outlet and the central portion of the tank, or a position in which it ensures communication between the boiler outlet and said bypass duct.
The invention relates to a door (1) provided with a gas burner (2) on the inner surface thereof and with a system (5) for carrying a combustible gas to the burner on the outer surface thereof, and which can be inserted and attached into a frame (61) of a wall of the device (AC); the door comprises a pair of metal sheets (10, 11) rigidly connected to one another at the edges thereof (100), with input openings (102) and output openings (103) for the gas mixture, respectively, and which are mutually separated, in order to leave an inner space receiving a deflector plate (3) serving as a thermal shield to be swept over on either side by the flow of the gas mixture supplying the burner. Said arrangement reduces heat loss through the door, making it possible to keep the outer surface cold, thus also avoiding the risk of burns, while at the same time preheating the gas mixture. The invention can be used in heating appliances.
The invention relates to a door (1) provided with a gas burner (2) on the inner surface thereof and with a system (5) for carrying a combustible gas to the burner on the outer surface thereof, and which can be inserted and attached into a frame (61) of a wall of the device (AC); the door comprises a pair of metal sheets (10, 11) rigidly connected to one another at the edges thereof (100), with input openings (102) and output openings (103) for the gas mixture, respectively, and which are mutually separated, in order to leave an inner space receiving a deflector plate (3) serving as a thermal shield to be swept over on either side by the flow of the gas mixture supplying the burner. Said arrangement reduces heat loss through the door, making it possible to keep the outer surface cold, thus also avoiding the risk of burns, while at the same time preheating the gas mixture. The invention can be used in heating appliances.
The equipment of the invention includes a boiler (1), a hot water storage tank (2), a duct (8) for supplying domestic cold water, and a duct (7) for tapping domestic hot water, wherein said equipment is characterised in that the duct (8) for supplying cold water comprises a T-shaped connector (80) connected by a duct (30) provided with a storage vessel (3) to a re-circulation duct connecting the tank to the inlet duct (50), provided with a pump, of the boiler (1), and in that the outlet duct (40) of the boiler is provided with a three-way valve (4) connected by a bypass duct (13) to said T-shaped connector (80), wherein said valve (4) can selectively assume a position in which it ensures communication between the boiler outlet (40) and the central portion of the tank (2), or a position in which it ensures communication between the boiler outlet (40) and said bypass duct (13). When the boiler is off, the cold water stored in the vessel (3) can be rapidly expelled for the rapid cooling of the exchanger (1) and the piping, thus avoiding any risk of lime deposit and scale formation in the exchanger and the ducts.
The equipment of the invention includes a boiler (1), a hot water storage tank (2), a duct (8) for supplying domestic cold water, and a duct (7) for tapping domestic hot water, wherein said equipment is characterised in that the duct (8) for supplying cold water comprises a T-shaped connector (80) connected by a duct (30) provided with a storage vessel (3) to a re-circulation duct connecting the tank to the inlet duct (50), provided with a pump, of the boiler (1), and in that the outlet duct (40) of the boiler is provided with a three-way valve (4) connected by a bypass duct (13) to said T-shaped connector (80), wherein said valve (4) can selectively assume a position in which it ensures communication between the boiler outlet (40) and the central portion of the tank (2), or a position in which it ensures communication between the boiler outlet (40) and said bypass duct (13). When the boiler is off, the cold water stored in the vessel (3) can be rapidly expelled for the rapid cooling of the exchanger (1) and the piping, thus avoiding any risk of lime deposit and scale formation in the exchanger and the ducts.
This exchanger comprises a pair of primary tubular bundles (5a, 5b) surrounding a fuel or gas burner (4a, 4b), and a secondary tubular bundle (6) on which condensation of the steam contained in the burned gases discharged from the primary bundles occurs, wherein the three bundles (5a, 5b, 6) are mounted parallel, side-by--side inside a gas-tight casing (10), and communicate with one another, with means being provided in order to circulate the water to be heated, between the tubes forming the secondary bundle (6) and the tubes forming the primary bundles (5a, 5b); the casing (10) is subdivided at the level of the secondary bundle (6) by a partition (7-70) that extends both inside and outside said bundle (6), with the arrangement being such that a only a circumferential section of the latter is capable of being contacted and traversed by the hot gases coming from one of the two primary bundles (5a), and its remaining section being capable of being contacted and traversed only by the hot gases coming from the other primary bundle (5b). Household or industrial heating installation with high efficiency and low bulk.
F24H 1/46 - Water heaters having plural combustion chambers
F24H 9/14 - Arrangements for connecting different sections, e.g. in water heaters
F28D 7/10 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
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