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
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
  • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits 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
  • F28F3/042—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 local deformations of the element
  • F28F3/044—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 local deformations of the element the deformations being pontual, e.g. dimples
• • 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
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
  • F28D2021/0035—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for domestic or space heating, e.g. heating radiators
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

• the present invention relates to a heating device, in particular of the liquid circulation type, with a reinforced water chamber.
• a common indoor heating system consists of radiators in which a heating liquid (typically hot water) circulates.
• a heating liquid typically hot water
• the radiators used in these systems may be made of various metal materials and are often formed of batteries of radiator elements which are manufactured separately and then joined together.
• a typical radiator element has a substantially tubular body, provided with an inner chamber through which the water flows (water chamber) and with hydraulic connections for connection to other similar radiator elements and/or to a hydraulic circuit and arranged at the opposite ends of the element; two opposite partitions extend from the water chamber, along a centreline plane of the element, supporting, respectively, a front plate and a rear plate; a plurality of heat exchange fins extend from the tubular body.
• radiators comprising such elements are entirely satisfactory and have now reached the limits of their performance and can be improved no further, or at least only minimally, especially in terms of their specific power per unit of weight, i.e., the ratio between the thermal power emitted by the radiator element and transferred to the environment (measured according to specific standards, for instance EN 442), and the weight of the element (which is the fundamental parameter directly affecting production costs) .
• heating radiators provided with elements having structural functions inside the water chamber are not known in the prior art.
• One purpose of the present invention is to provide a heating device, in particular (but not necessarily) made of aluminium, for heating indoor environments and which can also be used instead of conventional radiators or radiator elements, which has high/increased thermal efficiency and good mechanical strength and resistance to internal pressure .
• the present invention thus relates to a heating device such as defined in its essential terms in the appended claim 1 and, in its secondary and preferred features, in the dependent claims.
• the invention effectively overcomes the technical problem of increasing the mechanical strength of the water chamber and its ability to withstand pressure.
• the invention achieves the technical result without increasing the thickness of the walls and leaving ample freedom of design in terms of the shape and dimensions of the water chamber.
• the invention thus allows a high level of versatility in the design of the water chamber, in order to achieve further advantages, such as an increase in the efficiency and power of the heating device.
• water chambers can be designed so as to achieve an adequate distribution of the water over all the available heat exchange surfaces, and/or to extend practically from the front of the device to the back, so that the heating liquid directly laps the main heat exchange surfaces (the largest surfaces) of said device.
• the inventors of the invention in question have realised that to increase the power and general efficiency, rather than increasing the amount of water (as commonly believed in the prior art), the water must be appropriately distributed over the available heat exchange surfaces; but this requires the use of water chambers of a design that could undermine their structural properties and resistance to pressure.
• the invention even allows these highly efficient designs to be used without increasing the thickness of the walls (which would clearly also increase the weight and cost) and without the use of other prior art design solutions, which would in any case undermine their thermal efficiency.
• the heating device according to the invention offers adequate structural resistance, so that other water chamber designs can be used in place of conventional and more traditional ones, without undermining mechanical strength and resistance to internal pressure.
• the invention is also suitable for use with water chambers of conventional design.
• FIG. 1 is a perspective view of a first embodiment of a heating device according to the invention.
• FIG. i is a side view of the device shown in Figure i;
• Figures 3 and 4 are two section views along the dashed lines III-III and IV-IV, respectively, of Figure 2;
• FIG. 5 is a perspective view of a second embodiment of the heating device according to the invention.
• FIG. 6 and 7 are, respectively, a longitudinal section view and a cross section view of the heating device of Figure 5;
• FIG. 8a, 8b, 8c are schematic views of details of a further alternative embodiment of the heating device according to the invention.
• FIG. 9 is, respectively, a perspective view, a longitudinal section view and a cross section view of a further alternative embodiment of the heating device according to the invention.
• FIG. 1 denoted as a whole by reference numeral 1 is a heating device (for heating environments inside buildings) of the liquid circulation (for example, hot water) type.
• the liquid circulation for example, hot water
• the device 1 comprises a body 2 made of a heat conducting material, for example (but not necessarily) a metal material, in particular aluminium (said term also comprising aluminium alloys, i.e., alloys containing aluminium) and for example aluminium obtained by die- casting (i.e., made of aluminium or an alloy containing aluminium produced by means of a die-casting process) .
• a metal material in particular aluminium (said term also comprising aluminium alloys, i.e., alloys containing aluminium) and for example aluminium obtained by die- casting (i.e., made of aluminium or an alloy containing aluminium produced by means of a die-casting process) .
• aluminium aluminium alloys, i.e., alloys containing aluminium
• aluminium aluminium obtained by die- casting
• aluminium aluminium obtained by die- casting
• the body 2 may be made of another material, provided it is suitable for conducting heat (such as ceramic, polymeric, composite and other materials), and produced by means of
• the body 2 is a hollow body and is provided with an inner chamber 3 (water chamber) in which a heating liquid (for example, hot water) circulates when in use.
• a heating liquid for example, hot water
• the body 2 comprises a front heat exchange plate 4 and a rear heat exchange plate 5, positioned at respective opposite ends of the body 2 (precisely, with reference to the normal position of use of the device 1, a front end and a rear end) and substantially facing one another and joined along respective peripheral edges 6 which together form a closed loop perimeter edge 7 of the chamber 3.
• the plates 4, 5 have a substantially quadrangular shape (being for example substantially square or rectangular) , but it is understood that the plates 4, 5 may be of a different shape.
• the front plate 4 has an inner face 8 facing the chamber 3 and wet by the heating liquid and which thus exchanges heat with the heating liquid in the chamber 3 (receiving heat from the heating liquid) ; and an outer face 9, opposite to the inner face 8 and defining a first heat exchange surface 10, in particular a main front heat exchange surface of the device 1, facing, when in use, the environment to be heated and which exchanges heat with the air in the environment in which the device 1 is installed (releasing heat into the air) , in addition to releasing heat into the environment by radiation.
• the rear plate 5 has an inner face 11 facing the chamber 3 and wet by the heating liquid and which thus exchanges heat with the heating liquid in the chamber 3 (receiving heat from the heating liquid) ; and an outer face 12, opposite to the inner face 11 and defining a second heat exchange surface 13, facing, when in use, a supporting wall W to which the device 1 is fixed by fastening members (of a type known and not illustrated here for the sake of simplicity) and which exchanges heat with the air in the environment in which the device 1 is installed (releasing heat into the air) .
• the surface 10 defines a main front heat exchange surface of the device 1, facing the environment to be heated and opposite to the supporting wall W to which the device 1 is fixed.
• the chamber 3 extends along a longitudinal axis A, vertical when in use, and a transverse axis B, horizontal when in use, defining, respectively, the height and width of the chamber 3; and along a third axis C, perpendicular to the longitudinal axis A and to the transverse axis B and defining the thickness of the chamber 3.
• the chamber 3 is delimited at the front by the front plate 4 and precisely by the inner face 8 of the front plate 4 facing the chamber 3; and at the back by the rear plate 5 and precisely by the inner face 11 of the rear plate 5, facing the inner face 8 of the front plate 4.
• the inner face 8 of the front plate 4 and the inner face 11 of the rear plate 5 face one another and are spaced apart so that the distance between them defines the thickness of the chamber 3.
• the thickness of the chamber 3 is thus defined as the distance between the front plate 4 and the rear plate 5 and precisely between the inner face 8 of the front plate 4 and the inner face 11 of the rear plate 5.
• the plates 4, 5 need not necessarily be plane and parallel as illustrated in Figures 1-4, but may have different shapes and be arranged differently: for example, one or both of the plates 4, 5 could be curved, corrugated, etc.; and/or the plates 4, 5 could slope towards one another.
• the chamber 3 may also have a variable (different) thickness (measured parallel to the axis C) along the longitudinal axis A and/or along the transverse axis B.
• the chamber 3 is a thin chamber, with a thickness that is smaller (in at least one or more parts of the chamber 3 if not throughout the chamber 3) with respect to the other dimensions (height and width) and with respect to at least one from between the height and the width.
• the chamber 3 has a generally flattened shape and mainly extends along the longitudinal axis A, vertical when in use, and the transverse axis B, horizontal when in use, defining, respectively, the height and the width of the chamber 3; and the chamber 3 has a thickness, measured perpendicularly to the longitudinal axis A (vertical when in use) and to the transverse axis B (horizontal when in use), i.e., along the axis C (perpendicular to the longitudinal axis A and to the transverse axis B) which is smaller than the height and the width .
• the chamber 3 has a thickness, measured perpendicularly to the longitudinal axis A (vertical when in use) and to the transverse axis B (horizontal when in use), i.e., along an axis C perpendicular to the longitudinal axis A and to the transverse axis B, which is significantly smaller than the height and the width.
• the thickness of the chamber 3 is, in other words, defined as the distance between the front plate 4 and the rear plate 5 and precisely between the inner face 8 of the front plate 4 and the inner face 11 of the rear plate 5.
• the chamber 3 substantially extends on the entire front plate 4 with the exception of the peripheral edge 6 of the front plate 4 joined to the corresponding peripheral edge 6 of the rear plate 5.
• the plate 4 extend directly, at least in part, from the chamber 3 and comprises at least a wall portion 14 that directly delimits the chamber 3 and, in use, comes directly into contact with the heating liquid contained in the chamber 3.
• the inner face 8 of the plate 4 comprises at least a surface portion 15 that directly delimits the chamber 3.
• the chamber 3 extends between the two plates 4, 5 and comes directly into contact with at least respective surface portions 15 of both of the plates 4, 5.
• Both of the plates 4, 5 extend directly, at least in part, from the chamber 3 and comprise at least respective wall portions 14 that directly delimit the chamber 3 and, in use, come directly into contact with the heating liquid contained in the chamber 3 via respective surface portions 15.
• the body 2 is further provided with connections 16 extending from the body 2 and communicating with the chamber 3.
• connections 16 extend from the rear plate 5 and precisely from the outer face 12 of the rear plate 5 and are substantially perpendicular to the rear plate 5 and to the outer face 12 of the rear plate 5.
• the device 1 has four connections 16 positioned at respective corners of the chamber 3.
• the front plate 4 and the rear plate 5 are both substantially plane and parallel; it is understood that the front plate 4 and/or the rear plate 5, like their faces, may have a different shape, for example curved, corrugated, etc.
• the outer face 9 of the front plate 4 is, for example, substantially smooth.
• the rear plate 5 supports a plurality of heat exchange fins 17 which extend outside the chamber 3 from the rear plate 5 and precisely from the outer face 12 of the rear plate 5.
• the fins 17 are substantially perpendicular to the outer face 12 of the rear plate 5 and parallel to one another and to the longitudinal axis A (vertical when in use) . It is understood that the fins 17 may be formed and arranged differently, i.e., the fins 17 may have a different shape, they may be oriented in a different way, arranged differently with respect to one another compared with that illustrated merely by way of example.
• all of the fins 17 extend directly from the chamber 3, since they are joined directly to a wet wall 18 of the chamber 3, in this case defined by the rear plate 5, so that all of the fins 17 are so-called "wet fins". All of the fins 17 have a root edge 19 joined to the wet wall 18 of the chamber 3, which comes directly into contact with the heating liquid.
• the front plate 4 and the rear plate 5 comprise or constitute respective main walls 24, 25, substantially facing one another, of the chamber 3 with respective inner surfaces 26, 27 facing the chamber 3 and wet by the heating liquid contained in the chamber 3.
• main walls refers to the walls of the chamber 3 (i.e., the walls that delimit the chamber 3 and come directly into contact with the heating liquid contained in the chamber 3) with a larger surface extension (area) than every other wall of the chamber 3.
• the front plate 4 and the rear plate 5 thus comprise or constitute the main walls 24, 25 of the chamber 3 and precisely a front wall 24 that, in use, faces the environment to be heated, and a rear wall 25 that, in use, faces the wall W of the environment to be heated.
• the inner faces 8, 11 of the plates 4, 5 define (or comprise) the inner surfaces 26, 27 of the main walls 24, 25.
• the chamber 3 is delimited by the two main walls 24, 25, facing one another and defined in the embodiment illustrated in Figures 1-4 by the plates 4, 5; and by the perimeter edge 7 connecting the main walls 24, 25 to one another and has an extension (surface) that is smaller than each of the main walls 24, 25.
• the main walls 24, 25 are substantially parallel to the main front heat exchange surface 10 of the device 1.
• the front plate 4 and the rear plate 5, comprising the main walls 24, 25 of the chamber 3 and the respective peripheral edges 6 shaped so as to couple with one another, are advantageously formed of respective monolithic pieces, made for example of aluminium obtained by means of a die- casting process; the two pieces that make up the two plates 4, 5 are then joined along the respective peripheral edges 6, so as to form a mechanical and fluid-tight joint.
• the plates 4, 5 are joined by means of a thermo-electric melting process, performed by circulating current through respective contact portions of the pieces to be joined to cause the local melting thereof, without the contribution of welding material (as described in international patent application W02014 / 155295 ) .
• the plates 4, 5 may, however, be joined in other ways, for example by means of mechanical joining methods (possibly with the interposition of sealing gaskets), gluing, other types of welding (not necessarily electromagnetic), etc.
• the fins 17 are made as an integral part of the plate 5 from which they project so as to form a monolithic piece therewith (i.e., the fins are not borne by or joined to the plate 5, but are made directly with the plate 5, for example during an extrusion or die-casting step) .
• ties 33 i.e., projections that extend between the front plate 4 and the rear plate 5 (i.e., between the main walls 24, 25) and are integral with (firmly joined to or made as a single piece with) the inner face 8 of the front plate 4 and with the inner face 11 of the rear plate 5, i.e., with respective inner faces, facing the chamber 3, of the main walls 24, 25.
• the ties 33 are made as a single piece with one of the plates 4, 5 and extend towards the opposite plate, to which they are joined, for example, by means of welding or thermo-melting when the plates 4, 5 are joined to one another to form the device 1, in particular by means of a local thermo-electric melting process on each tie 33 (but it is understood that the plates 4, 5, as already mentioned, may be joined to one another in other ways) ; in particular, the ties 33 are shaped as protuberances on the inner face 11 of the rear plate 5 (and are made for example by being die-cast with the plate 5) and are welded to the inner face 8 of the front plate 4. Alternatively, the ties 33 may be made separately and welded to the two plates 4, 5; or even made as integral parts of both of the plates 4, 5.
• the ties 33 may be defined directly as integral parts of both of the plates 4, 5; or as integral parts of one of the plates 4, 5 which are then joined (welded) to the other plate; or as separate components which are then joined (welded) to both of the plates 4, 5.
• the ties 33 extend along respective axes parallel to the axis C and perpendicular to the faces 8, 11; and have a cross section (perpendicular to their axis, i.e., to the axis C) that is substantially circular. It is understood that the ties 33 may have a different shape from that illustrated here purely by way of example.
• the ties 33 are distributed on the faces 8, 11 and their main function is to increase the mechanical strength of the device 1, in particular to improve its resistance to pressure.
• the ties 33 also contribute to making the device 1 fluid tight, in that they contribute to keeping the two plates 4, 5 joined together so as to prevent any leakage of liquid . Since the ties 33 are inserted along the path of the heating liquid in the chamber 3, they also have a function of distributing the heating liquid in the chamber 3.
• the chamber 3 houses between the two plates 4, 5 internal elements 34 (which may also include the ties 33) which act on the flow of the heating liquid circulating in the chamber 3, for example to define one or more paths in the chamber 3, to distribute the heating liquid in the chamber 3, to modify the motion of the heating liquid in the chamber 3, etc.
• the elements 34 are shaped and arranged so as to aid the even distribution of the water in the chamber 3.
• the elements 34 comprise, in addition to the ties 33, a first distributor 35a, positioned at a top end 36a of the chamber 3, and/or a second distributor 35b, positioned at a bottom end 36b of the chamber 3 (again with reference to the normal position of use of the device 1: the ends 36a, 36b are axially opposite ends with respect to the longitudinal axis A) .
• the distributors 35a, 35b are defined by respective transverse walls, for example substantially parallel to the axis B (or slanting with respect to the axis B, or curved or even differently shaped) which extend between the inner face 8 of the front plate 4 and the inner face 11 of the rear plate 5 and between two lateral opposite sides of the chamber 3 and are provided with respective series of longitudinally spaced through apertures 37.
• the distributor 35a is positioned close to and below an inlet 16a, defined by one of the sleeves 16 and positioned at the top end 36a of the chamber 3.
• the distributor 35a is positioned close to and below an inlet 16a, defined by a first connection 16 positioned at the top end 36a of the chamber 3; and the distributor 35b is positioned close to and above at least one outlet 16b, defined by another connection 16 positioned at the bottom end 36b of the chamber 3.
• the chamber 3 has an inlet 16a, defined by a first connection 16 positioned at a top end of the chamber 3; and two outlets 16b, defined by respective further connections 16 positioned at the bottom end of the chamber 3 and at respective opposite lateral ends of the chamber 3.
• the heating liquid enters the chamber 3 through the inlet 16a and flows out through both of the outlets 16b, after being distributed substantially evenly inside the chamber thanks to the distributors 35a, 35b.
• the chamber 3 may also house just one of the distributors 35a, 35b.
• the shape of the distributors 35a, 35b may also differ from that illustrated and described here purely by way of example.
• the ties 33 are substantially transversal with respect to a direction of advancement of the heating liquid in the chamber 3 between the inlet 16a and the outlet 16b.
• connections 16 are defined by respective sleeves, for example but not necessarily substantially cylindrical (but the sleeves may also have a different shape) , and their purpose is to connect the device 1 to an external hydraulic circuit (not illustrated) and/or to connect the device 1 to other identical devices to define a modular system .
• connections 16 that are not used to connect the device 1 to another identical device to define a modular system or to connect the device 1 to the external hydraulic circuit are closed by plugs (not illustrated) .
• FIGS 5-7 in which details similar or identical to those already described are denoted by the same reference numerals, show a second embodiment of the heating device 1 according to the invention.
• the device 1 comprises a body made of a heat conducting material, for example aluminium, provided with an inner chamber 3 (water chamber) through which, in use, the heating liquid (hot water) circulates.
• a heat conducting material for example aluminium
• the body 2 is configured so as to be used in place of a conventional radiator element to form a battery of radiator elements arranged side by side.
• the chamber 3 has a generally flattened shape and mainly extends along a longitudinal axis A, vertical when in use, and a transverse axis B, horizontal when in use, defining, respectively, the height and the width of the chamber 3.
• the chamber 3 has a height and a width measured, respectively, along a longitudinal axis A (vertical when in use) and a transverse axis B (horizontal when in use) , and a thickness measured along an axis C (also horizontal when in use) perpendicular to the longitudinal axis A and to the transverse axis B.
• the chamber is again delimited by a pair of opposite main walls 24, 25, facing one another, and by a perimeter edge 7, which connects the main walls 24, 25 to one another and has a surface that is smaller than each of the main walls 24 , 25.
• the chamber 3 has, for example, a generally flattened shape, as described above.
• the chamber 3 mainly extends in height and width, respectively, along the longitudinal axis A and the transverse axis B; and has a thickness, measured along the axis C perpendicular to the longitudinal axis A and the transverse axis B, that is significantly less than the height and the width.
• the thickness of the chamber 3 is again defined as the distance between the main walls 24, 25 (thus measured along the axis C) and precisely between respective inner surfaces 26, 27 of the main walls 24, 25.
• main walls 24, 25 are substantially perpendicular to the main front heat exchange surface 10 of the device 1 (and not, as in the embodiment described with reference to Figures 1-4, substantially parallel to the surface 10) .
• the main walls 24, 25 define respective lateral sides of the device 1.
• the surface 10 consists of an outer face 9 of a front plate 4 which extends from the perimeter edge 7 of the chamber 3.
• the plate 4 is joined to a front portion 28a of the perimeter edge 7 of the chamber 3.
• the plate 4 is joined to the edge 7 by a longitudinal seam 29 (parallel to the longitudinal axis A) and extends on opposite sides of the seam 29.
• the front portion 28a of the edge 7 is formed by the portion of the plate 4, so that the plate 4 directly delimits the chamber 3 forming the front portion of the edge 7, i.e., the plate 4 extend directly from the chamber 3 and has an inner face 8 that is in part wet by the heating liquid circulating in the chamber 3.
• the body 2 also comprises a rear plate 5, which extends from a rear portion 28b of the perimeter edge 7 of the chamber 3.
• the plate 5, like the plate 4, may be joined to the edge 7 by a longitudinal seam 29 (parallel to the longitudinal axis A) , or extend directly from the chamber 3, having a portion that forms the rear portion 28b of the edge 7 and which is therefore directly wet by the heating liquid circulating in the chamber 3.
• the plate 4 and/or the plate 5 extend directly, at least in part, from the chamber 3 and are completely or at least partly in direct contact with the heating liquid contained in the chamber 3, i.e., they have at least respective wall portions 14 that delimit the chamber 3 and, in use, come directly into contact with the heating liquid contained in the chamber 3, forming respective portions of the edge 7 of the chamber 3.
• the plate 4 and/or the plate 5 are also so-called "wet fins " .
• the device 1 comprises further heat exchange surfaces defined by a plurality of heat exchange fins 17 which extend outside the chamber 3 from the main walls 24, 25.
• the fins 17 are substantially perpendicular to the main walls 24, 25 and parallel to one another and to the longitudinal axis A (vertical when in use) . It is understood that the fins 17 may be formed and arranged differently.
• all of the fins 17 extend directly from the chamber 3, since they are joined directly to wet walls 18 of the chamber 3, in this case defined by said main walls 24, 25 of the chamber 3, so that all of the fins 17 are "wet fins”.
• connections 16 are arranged in pairs at respective opposite longitudinal ends (positioned along the longitudinal axis A) , respectively, in use, a top end and a bottom end of the body 2.
• connections 16 extend from both of the walls 24, 25 and are substantially perpendicular to the walls 24, 25; the connections 16 positioned at a same longitudinal end are aligned with one another parallel to the axis C.
• the body 2 is advantageously (but not necessarily) formed by two monolithic pieces, each comprising one of the main walls 24, 25 and a respective peripheral edge 6.
• peripheral edges 6 are shaped so as to couple with one another to form the perimeter edge 7 of the chamber 3.
• the pieces that comprise the main walls 24, 25 and the respective peripheral edges 6 are made for example of aluminium obtained by die-casting and joined, advantageously by means of the thermo-electric melting process described previously, along the respective peripheral edges 6, so as to form a mechanical and fluid- tight joint.
• the joint (melting) along the peripheral edges 6 permits effective heat transmission by both of the main walls 24, 25 of the chamber 3 to the plates 4, 5.
• the chamber 3 houses the ties 33, arranged between the main walls 24, 25 and securely fastened to both of the inner surfaces 26, 27 of the main walls 24, 25.
• the ties 33 extend along respective axes parallel to the axis C and perpendicular to the faces 8, 11; and have a cross section (perpendicular to their axis, i.e., to the axis C) that is substantially circular. In any case, it is understood that the ties 33 may have a different shape from that illustrated here purely by way of example .
• the ties 33 extend across the chamber 3 between the opposite walls 24, 25 with which they are integral and are positioned along the path of the heating liquid in the chamber 3, thus also having a function of distributing the heating liquid inside the chamber 3.
• the elements 34 comprise flow conveyors 38 which extend inside the chamber 3 from at least one inner surface 26, 27 of the chamber 3. At least some of the ties 33 are obtained through the connection of respective facing pairs of conveyors 38.
• the conveyors 38 are shaped so as to intercept and interrupt the spontaneous flow of the heating liquid circulating in the chamber 3 and to aid the even distribution of the water in the chamber 3.
• a series of conveyors 38 extend from each surface 26, 27, i.e., from each main wall 24, 25 of the chamber 3; the conveyors 38 extend from each surface 26, 27 towards the opposite surface (with which they form a fluid-tight contact or from which they are spaced to permit the passage of heating liquid) and join one another in respective contact areas 39.
• the contact areas 39 of counterposed conveyors 38 are integral with (firmly joined to or made in a single piece with) one another to define the ties 33.
• the contact areas 39 are joined to one another by means of welding or thermo-melting, in particular by means of the aforesaid local thermo-electric melting process on the contact areas 39.
• FIGS 9-11 illustrate a further embodiment of the heating device 1 according to the invention.
• the walls 24, 25 are joined by a plurality of longitudinally elongated ties 33 which extend parallel to one another (and, for example, parallel to the axis A) and are laterally spaced (for example, parallel to the axis B) with respect to one another.
• the ties 33 substantially extend for the entire height of the chamber 3, but are spaced from respective opposite longitudinal ends of the chamber 3 or have end apertures to permit the circulation of the heating liquid in the chamber 3.
• This embodiment is advantageously (but not necessarily) defined starting from an extruded profile, in particular in aluminium, closed at respective opposite longitudinal ends by end heads .

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Steam Or Hot-Water Central Heating Systems (AREA)
• Air-Conditioning For Vehicles (AREA)

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Citations (5)

• 2016
  • 2016-06-07 IT ITUA2016A004173A patent/ITUA20164173A1/it unknown
• 2017
  • 2017-06-07 WO PCT/IB2017/053361 patent/WO2017212419A1/en active Application Filing

Patent Citations (5)

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