Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
  • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
  • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
  • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
• • 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

Definitions

• the present invention relates to a heat exchanger structure that is particularly indicated for central heating boilers and the production of sanitary hot water.
• a heat exchanger is any type of equipment designed for thermal exchange between liquids separated by a conducting wall.
• the exchanger is composed of a coiled pipe or various pipes placed horizontally, over a burner used to heat the air that then comes into contact with
• the metal surface designed to remove heat from the air and transfer it to the water inside the pipes.
• the pipes are connected to a cold water inlet pipe and a hot water outlet pipe ⁇ which, while flowing through the exchanger pipes, is heated.
• the exchanger on the outside of the pipes, has a plurality of metal plates that are designed to increase the thermal exchange surface.
• One first drawback found derives from the fact that, in current boilers, there are empty spaces where heat dispersal is detected. One of these spaces where heat is lost is the space between the burner and the exchanger, while another space is above the exchanger.
• the heat tends to rise from the bottom to the top, so the heat produced by the burner involves and comes into contact with the exchanger for only a very limited vertical stretch as all the pipes are arranged horizontally.
• condensation boilers work in two phases: the first phase heats while the second recovers "temperature” and heat from the fumes and introduces them into the exchanger again.
• the heat, produced during the first burner phase and dispersed in the fumes after passing through the exchanger is used to heat the area surrounding the exchanger itself in order to be able to use it further but this means that the structure and devices in the exchanger need to have a very complex design.
• the aim of the present invention is substantially to resolve the problems of the current techniques by overcoming the difficulties described above by means of a heat exchanger structure, which is able to completely exploit all the heat produced by a burner to heat a liquid with just one flow cycle and without the recovery of the fumes.
• the second aim of the present invention is to have a heat exchanger structure that allows the flow of heat across an exchange surface that is considerably increased.
• the third aim of the present invention is to have a heat exchanger structure that allows considerable saving of energy consumption of the burner for the same flow heated and temperature obtained.
• Another aim of the present invention is to have a heat exchanger structure that has a simple and modular structure and a small overhang and that is able to exploit all the unused spaces inside boilers.
• a further aim of the present invention derives from the fact that the heat exchanger allows the liquid heating to be performed in a single phase.
• the last but not least important aim of the present invention is to produce a heat exchanger that is simple to produce and that works well.
• FIG. 1 illustrates a schematic and exploded view of a heat
• figure 2 illustrates schematically and in perspective view the heat exchanger shown in figure 1 ;
• FIG. 4 illustrates a partially-sectioned view from above " of the heat exchanger according to the present invention
• FIG. 6 illustrates a section view of the heat exchanger fn question
• FIG. 7 illustrates a section view of the heat exchanger along the B-B axis
• figure 8 illustrates a partially-sectioned lateral view of the heat exchanger shown in figure 1 ;
• FIG. 9 illustrates a section view of a basic component of the heat
• - figure 1 1 illustrates a lateral view of the basic component of the heat exchanger shown in figure 9
• - figure 12 illustrates a perspective view of the basic component shown in figure 9;
• FIG. 13 illustrates another perspective view of the basic component of the heat exchanger shown in figure 9;
• - figure 14 illustrates a detail of the basic component shown in figure 12;
• figure 15 illustrates a detail of the basic component shown in figure 13 ;
• figure 16 illustrates a perspective view of the coupling of two basic components of the heat exchanger in question
• figure 17 illustrates in detail a radiating component of the heat exchanger shown in figure 1 ;
• - figure 18 illustrates a detail of the radiating component shown in figure 17;
• - figure 19 illustrates a lateral view of the coupling of two basic components;
• FIG. 20 illustrates a lateral view of a radiating component of the heat exchanger according to the present invention
• figure 21 illustrates a lateral view of a variation of the basic component of the heat exchanger in question
• figure 22 illustrates a section view of the basic component shown in figure 21 along the C-C axis
• - figure 23 illustrates a front view of the basic component shown in figure 21 ;
• - figure 24 illustrates a perspective view of the basic component
• figure 25 illustrates schematically a view from above of the heat exchanger with the basic component shown in figure 21 and the
• FIG. 27 illustrates schematically a section view of the heat exchanger shown in figure 25 along the E-E axis
• FIG. 28 illustrates schematically a section view of the heat exchanger shown in figure 25 along the F-F axis
• FIG. 29 illustrates schematically and in perspective view a boiler
• figure 30 illustrates schematically a lateral view of the boiler shown in figure 29;
• figure 31 illustrates schematically a front section view of the boiler shown in figure 29 with the heat exchanger in question;
• figure 32 illustrates schematically a section view from above of the boiler shown in figure 29 with the heat exchanger; - figures 33 and 34 illustrate the functioning diagram of the boiler
• the heat exchanger structure 1 is substantially composed of a frame 2 inside which are arranged, parallel with each other, a plurality of radiating components 3.
• Each radiating component 3 is substantially composed of a pair of basic components 3a and 3b that are coupled with each other symmetrically as shown in figures 16 to 20.
• each basic component 3a or 3b is composed of a plate 30 with, on the inner side, a plurality of primary wings 31, equally spaced from each other and positioned orthogonally to the plate itself, and on the outer side a series of secondary wings 32, which are also positioned orthogonally to the plate 30 and equally spaced from each other, but closer to each other than the primary wings 31 as shown in figures 13, 15 and 22.
• the secondary wings 32 are designed to absorb the heat produced by a burner 4 positioned under the frame 2 of the exchanger and transmit it to the plate 30 and the primary wings 31 inside the radiating component, so that it is transmitted to the liquid that flows inside the space 34, created by the coupling of the two basic components 3a and 3b.
• the plate 30 is equipped with two projections 30a and 30b forming an arch, facing each other and designed to couple with the corresponding projection present on the other basic component forming a channel 350 as shown in figures 16, 17, 18, 19 and 20.
• the frame 2 is equipped with at least one first cold liquid inlet duct 5 positioned below the base of the frame itself.
• the first duct 5 is connected to the space 34 of each radiating component 3 by means of a first passage 35 present in the duct 5 and through which the liquid from the duct 5 enters the first channel 350 created by the coupling of the projections 30a in each radiating component present in the frame 2 as shown in figures 1 and 7.
• the frame 2 is provided with at least one second hot liquid outlet duct 6 positioned above the top of the frame itself.
• the second duct 6 is also connected with the space 34 of each radiating component 3 by means of a second passage 36 present in the duct 6 and through which the liquid, from the second channel 350 created by the coupling of the projections 30b, enters the duct 6 from the opposite side to the plate with respect to the passage 35.
• the exchanger is equipped with two first cold liquid inlet ducts 5 in the plurality of radiating components and two second outlet ducts 6 for the liquid output that in the meantime has been heated by the plurality of radiating components.
• each basic component is composed of extruded or moulded metal so the manufacturing of the entire exchanger is very simple, as it is achieved by the assembly of two basic components to obtain a radiating component 3 and the arrangement of a plurality of radiating components that are arranged vertically and parallel with one another.
• the first and the last basic components do not have the external wings 32 as shown in figure 1.
• the exchanger has an enclosing wall 7 as shown in figures 2 and 3.
• the water that has to be heated enters the exchanger structure into the spaces 34 through the duct 5 after having passed through the passage 35 and entered the first channel 350 of each radiating component to then exit through the hot water duct 6 passing through the second channel 350 and the passage 36.
• the water collects all the heat produced by the burner, completely exploiting it, and the air that exits through the boiler exhaust shall have used up all the heat energy contained in it and shall be at a low temperature.
• the heating cycle may be continuous without interruptions or idle periods and without heat dispersal or the necessity to recover it to introduce it into the exchanger again as happens in many boilers of the prior art.
• the configuration of the exchanger allows the use, and therefore complete exploitation of the heat produced by the burner at all the points as, the heat, while flowing through the boiler, always comes into contact with the exchanger structure in every horizontal and vertical section.
• the present invention therefore achieves the aims proposed.
• the exchanger structure according to the present invention allows the complete exploitation of all the heat produced by a burner to heat a liquid with just one cycle and without recovering the fumes.
• the vertical configuration of the plates and the vertical water cycle allows all the heat produced by the burner to be used while flowing from the bottom to the top. In this way, the radiating components are able to absorb all the heat produced and transmit it to the water that is flowing inside them.
• the exchanger in question allows the heat to pass across an exchange surface that is considerably increased due to the presence of plates and not a pipe, as happened in the prior art, and internal wings.
• the heat exchanger structure allows a considerable saving to be made in the energy consumption of the burner, with the same flow heated and temperature obtained, with savings in methane consumption, for example, of over 50% due to the fact that all the heat produced is used and transferred to the water.
• the reduced consumption of the burner allows the reduction, as a result, of the resulting emission into the atmosphere with resulting limitation and reduction of pollutants released into the air.
• the heat exchanger structure is simple and modular, has a small overhang and exploits all the unused spaces present in the boilers of the prior art. Besides, the exchanger structure in question is able to transfer a greater quantity of heat in a smaller space, thereby reducing the possibility for dispersal unlike what happens in the boilers currently on the market.
• the exchanger structure allows the upwards distribution of the heat produced by the burner to be exploited optimally with a large exchange surface.
• the exchanger does not need containment and protection walls as is necessary with those of the prior art as while assembling the radiating components, the overall structure is already obtained so it is therefore possible to create a watertight chamber type boiler without the external structure.
• the exchanger structure according to the present invention is simple, as it is the sum of a single piece, the radiating component, that is multiplied, unlike the components that compose the exchangers of the prior art that are composed of a certain number of single pieces that are different from each other and that are then assembled, so it is possible to build a very compact boiler with low manufacturing costs, even using a single radiating component.
• a further advantage of the present exchanger derives from the fact that it is very versatile and easy to use; in fact it allows all the heat produced by the burner to be used, with a simple structure and a single operative cycle for the boiler.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (2)

Family

ID=38352993

Family Applications (1)

Country Status (8)

Citations (4)

Family Cites Families (4)

• 2006
  • 2006-03-17 IT IT000020A patent/ITMN20060020A1/it unknown
• 2007
  • 2007-03-16 DK DK07736701.9T patent/DK2008048T3/da active
  • 2007-03-16 WO PCT/IT2007/000196 patent/WO2007108033A2/en active Application Filing
  • 2007-03-16 EP EP07736701A patent/EP2008048B1/en active Active
  • 2007-03-16 ES ES07736701T patent/ES2416341T3/es active Active
  • 2007-03-16 CA CA002658682A patent/CA2658682A1/en not_active Abandoned
  • 2007-03-16 US US12/226,761 patent/US20090178791A1/en not_active Abandoned
  • 2007-03-16 PL PL07736701T patent/PL2008048T3/pl unknown

Patent Citations (4)

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